How to install a Brother DCP-J1360DW https://askubuntu.com/questions/1566709/how-to-install-a-brother-dcp-j1360dw

I'm seeking support for installing a brother-multifunction device DCP-J1360DW. Since it is displayed after entering a command in the terminal, it is unfortunately not possible to add it so that it is still automatically displayed and recognized after each restart. Does anybody know what to do?

Error message in response to sudo apt full-upgrade" https://askubuntu.com/questions/1566708/error-message-in-response-to-sudo-apt-full-upgrade

When i enter "sudo apt full-upgrade" i get the error message "Malformed line 1 in source list /etc/apt/sources.list.d/tor.list". How do I fix?

Why is Gstreamer in Ubuntu 26.04 on RPi5 not handling h.265 video (it was working in 24.04) https://askubuntu.com/questions/1566703/why-is-gstreamer-in-ubuntu-26-04-on-rpi5-not-handling-h-265-video-it-was-workin

My system is a Raspberry Pi 5 16GB running a fresh install of Ubuntu 26.04 with restricted extras installed plus all Gstreamer add-ons including good, bad and ugly.

If I use Showtime (Gstreamer-based) it cannot play videos encoded with h.265; the detailed error message is:

Error from element /GstPlayBin3:playbin3/GstURIDecodeBin3:uridecodebin3/GstDecodebin3:decodebin3-0/v4l2slh265dec:v4l2slh265dec1:   
Could not get/set settings from/on resource.  

Failed to configure the buffer pool

../gst-libs/gst/video/gstvideodecoder.c(4373): gst_video_decoder_decide_allocation_default (): /GstPlayBin3:playbin3/GstURIDecodeBin3:uridecodebin3/GstDecodebin3:decodebin3-0/v4l2slh265dec:v4l2slh265dec1:

Configuration is most likely invalid, please report this issue.

In other Gstreamer tests the error 'unsupported pixel format' is reported which is also h.265-related.

I can use other apps such as VLC to play h.265 videos, so that is not a problem, but because the [low-resource overhead] default file sharing on Ubuntu (simple on/off switch in settings menu) that I use to stream video to my TV (Rygel) is also Gstreamer-based, and because it cannot negotiate h.265 videos, it refuses to serve them. It also worked perfectly in 24.04 before I moved to 26.04.

I confirmed with a non-RPi5 user running Ubuntu 26.04 AMD64 build that Gstreamer works fine with h.265, and on the Raspberry Pi forum, a moderator said that Gstreamer fixes had recently been applied to RPiOS to address h.265 problems, so it could be that Ubuntu engineers have yet to get that across to the ARM-based Ubuntu 26.04 updates?

plasmashell does not load background image https://askubuntu.com/questions/1566702/plasmashell-does-not-load-background-image

I'll start by saying that it doesn't always happen.

In practice, sometimes the external monitor's background image doesn't load, so I'm forced to restart PlasmaShell like this:

systemctl --user restart plasma-plasmashell

Then the image loads.

I'd like to fix this problem permanently, and above all, I'm wondering what other problems there might be that I'm not seeing yet...

So, is there anything I can do to fix this permanently?

thanks

system information
Kubuntu 24.04
DE Plasma: 5.27.12
KDE Frameworks: 5.115.0
QT version: 5.15.13
Kernel version: 6.17.0.23generic 64 bit
Graphic platform: X11

My HP Victus 15-fb3xxx randomly freezes https://askubuntu.com/questions/1566701/my-hp-victus-15-fb3xxx-randomly-freezes

I want to make it clear from the start that I really appreciate any help. Okay, basically I have this laptop that freezes randomly. I tried using Kubuntu first and ran the command "ascm psie=off" (I know that's the output, not the command, but you know what I mean) because I thought it was a problem with the graphics chipset, but it didn't work. Today I installed Pop OS with the Gnome desktop environment. It seemed to be going well, but it froze just like it did with Kubuntu. I haven’t tried anything on this OS yet; maybe tomorrow I’ll try tweaking the kernel’s power settings to see if that fixes anything. I appreciate your help. Thank you very much.

Wine does not see my GeForce GT 730 GPU properly anymore https://askubuntu.com/questions/1566696/wine-does-not-see-my-geforce-gt-730-gpu-properly-anymore

Wine 11.8 (both staging and dev) no longer sees my GeForce GT 730 GPU (a Fermi one) properly, it instead reports 0 S of memory and therefore all games and even dxdiag fail with "no memory":

Also see this output from the terminal

0164:fixme:dsound:IKsPrivatePropertySetImpl_Get unsupported property: {1aeaa606-35f0-11d1-b161-00c04fc28aca}
0164:fixme:dsound:IKsPrivatePropertySetImpl_Get unsupported property: {1aeaa606-35f0-11d1-b161-00c04fc28aca}
0164:err:winediag:wined3d_dll_init Setting multithreaded command stream to 0.
0164:err:vulkan:vulkan_init_once Failed to load libvulkan.so.1
0164:err:d3d:wined3d_adapter_gl_init Failed to get a GL context for adapter 00C2BD40.
0164:err:winediag:wined3d_dll_init Setting multithreaded command stream to 0.
0164:err:d3d:wined3d_adapter_gl_init Failed to get a GL context for adapter 00C2BD40.
0164:fixme:ddraw:ddraw7_Initialize Ignoring guid {67685559-3106-11d0-b971-00aa00342f9f}.

I tried various workarounds but none helped so far. Wine does not want to talk/respond to my GPU anymore. I'm not sure what happened. Instead hit tries to use vulkan or other unsupported methods.

snapshot cannot play camera stream from a dinoscope https://askubuntu.com/questions/1566695/snapshot-cannot-play-camera-stream-from-a-dinoscope

Through Ubuntu 24.04, I have been using cheese to capture dinoscope images. Now with 26.04, cheese is being replaced by snapshot. When I attempt to use snapshot to record dinoscope images, it reponds "Cannot play camera stream".

Dinoscope is a simple hand held microscope (up to 50 power).

I did find a snap package of cheese which works on 26.04. I would prefer to use the recommended replacement for the cheese application.

How do I get a dinoscope to work with snapshot on 26.04?

24.04 unity desktop time & date https://askubuntu.com/questions/1566693/24-04-unity-desktop-time-date

The clock applet on the top right of the bar only shows my local time zone and UTC. When I try to use the clock settings to add additional locations, the settings input freezes and dies, though the clock continues to function. Is it just me? Has anyone found a solution?

Gnome Image Viewer no longer opens different photos in separate windows [closed] https://askubuntu.com/questions/1566690/gnome-image-viewer-no-longer-opens-different-photos-in-separate-windows

My image viewer used to open up multiple window instances when I would click on different photos from the file viewer, but now, for some reason, it just keeps one instance only showing the photo I last clicked on so I can no longer compare multiple photos the way I used to.

I am just using the default gnome image viewer (eye of gnome/ eog program). I havent installed any plugins or done anything I am aware of to cause this change in behavior, yet someone I cant seem to get it to behave the old way.

Can anyone please provide any assistance?

The specs of my machine are:

~$ eog --version GNOME Image Viewer 3.38.1

OS Name: Ubuntu 20.04.6LTS OS Type: 64-bit GNOME Version: 3.36.8 Windowing System: X11 Virtualization: VMware

Thanks in advance!

Not possible to boot kernel 6.17.0-19-generic on Dell Latitude 7340 https://askubuntu.com/questions/1566687/not-possible-to-boot-kernel-6-17-0-19-generic-on-dell-latitude-7340

I have an issue with Ubuntu 24.04 Noble. Since the update/auto installation of the Kernel 6.17.0-19-generic, I can't boot it.

My configuration is:

  • Dell Latitude 7340, SSD NVMe, BIOS in mode RAID On / Intel RST).

Ubuntu is not starting with kernel 6.17.0-19-generic. The boot fails with error

ACPI / AHCI

and then I enter in BusyBox (initramfs) which is impossible to leave (I can start on previous kernel and I write these lines from 6.17.0-14-generic).

Here, after some example of error message (not sure if it is linked to my problem, because this warning/error also displayed on 6.17.0.14 kernel boot.

ahci probe with driver ahci failed with error -12
ACPI BIOS Error (bug): Failure creating named object

In BusyBox, I can't find : /dev/nvme* (not present)

Any idea of what's happening and how to correct it?

I plan to install Ubuntu 26.04 in few month, but I still have a boot issue with the new kernel due to my configuration. I will stay on legacy version of ubuntu.

Where can I find Audacity for Ubuntu 24.04 LTS? https://askubuntu.com/questions/1566681/where-can-i-find-audacity-for-ubuntu-24-04-lts

I recently have upgraded from 22.04 LTS to 24.04 LTS. I've looked for the DWS, Audacity within SNAP and through Synaptic Package Manager. It's not in either place. Where can I find a version of Audacity that will allow installation on Ubuntu 24.04 LTS (Debian)? Thank you for the help. Rick...

Alternative to GCPW for Ubuntu: How to link Google Workspace accounts to persistent local users? https://askubuntu.com/questions/1566668/alternative-to-gcpw-for-ubuntu-how-to-link-google-workspace-accounts-to-persist

I am looking for a Linux equivalent to GCPW (Google Credential Provider for Windows) for an Ubuntu deployment.

Our Current Workflow (on Windows): We use GCPW so employees can log into their laptops using their Google Workspace (Gmail) credentials. When a new employee joins, they select "Add Work Account" at the Windows login screen. After they authenticate with Google, the system automatically links that identity to a persistent local account/home directory on the machine.

What I am looking for in Ubuntu:

  1. A way for the user to authenticate via Google (ideally with a web-view for 2FA support) directly from the GDM login screen.

  2. Upon the first successful login, the system should automatically create a local user and home directory (e.g., /home/username) if it doesn't already exist.

  3. The account should remain on the laptop for offline use, similar to how a local account behaves.

Duplicate cursors are appearing when taking screenshots or attaching a second monitor https://askubuntu.com/questions/1566663/duplicate-cursors-are-appearing-when-taking-screenshots-or-attaching-a-second-mo

I have a Gigabyte g5 kc laptop with an Intel Core i5 10500H and a laptop Nividia RTX3060 running Ubuntu 24.04.4.

When I take a screenshot there is a high chance that my cursor gets deposited on the screen where it was at the time of taking the screenshot and sometimes when attaching a second monitor. These cursors persist above everything until I restart sometimes they are displayed over the shutdown screen. They are also not just static images as they can react to what the current mouse is doing changing to click sprite or typing sprite. I say chance because it doesn't happen every time with screenshots. It's consistently around 50%. As for connecting a second monitor I only just noticed that happening today, so I do not know the percentage of that.

Cursor Gif

I don't think it is the graphics driver, as I changed it and the issue persisted. It also persisted whether I was on Wayland or Xorg. I also tried a bunch of screenshot tools the standard Ubuntu screenshot, GNOME Screenshot and Flameshot to name a few and they all do it.

System crashes/freezes whenever I close the laptop lid or trigger suspend manually. (Ubuntu 26.04) https://askubuntu.com/questions/1566616/system-crashes-freezes-whenever-i-close-the-laptop-lid-or-trigger-suspend-manual

Laptop Lenovo Legion Slim 5

GPU: NVIDIA GeForce RTX 4060 Laptop GPU AMD integrated GPU

OS: Ubuntu 26.04 LTS (Resolute Raccoon)

Graphics: Hybrid graphics setup (AMD + NVIDIA 4060)

Current GRUB parameters:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvidia-drm.modeset=1 nvidia-drm.fbdev=1 vt.handoff=7"

Problem

The laptop crashes/freezes/reboots whenever:

  • closing the lid
  • triggering suspend manually via UI

Evidence of the crash:
Evidence

Crash Logs:

May 12 02:58:27 LegionSlim5 kernel: PM: suspend entry (s2idle)
May 12 02:58:27 LegionSlim5 kernel: Filesystems sync: 0.067 seconds
May 12 02:58:27 LegionSlim5 kernel: jump_label: Fatal kernel bug, unexpected op at nvkms_kthread_q_callback+0x8e/0x1a0 [nvidia_modeset] [00000000302eb582] (e9 9b 00 00 00 != 0f 1f 44 00 00)) size:5 type:1
May 12 02:58:27 LegionSlim5 kernel: fbcon: Taking over console
May 12 02:58:28 LegionSlim5 kernel: ------------[ cut here ]------------
May 12 02:58:28 LegionSlim5 kernel: kernel BUG at arch/x86/kernel/jump_label.c:73!
May 12 02:58:28 LegionSlim5 kernel: Oops: invalid opcode: 0000 [#1] SMP NOPTI
May 12 02:58:28 LegionSlim5 kernel: CPU: 13 UID: 0 PID: 22980 Comm: systemd-sleep Tainted: P        W  OE       7.0.0-15-generic #15-Ubuntu PREEMPT(lazy) 
May 12 02:58:28 LegionSlim5 kernel: Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
May 12 02:58:28 LegionSlim5 kernel: Hardware name: LENOVO 82Y9/LNVNB161216, BIOS M3CN34WW 06/16/2023
May 12 02:58:28 LegionSlim5 kernel: RIP: 0010:__jump_label_patch.cold+0x24/0x26
May 12 02:58:28 LegionSlim5 kernel: Code: f8 e9 44 f7 19 00 48 c7 c3 b8 89 65 85 41 56 45 89 e1 49 89 d8 4c 89 e9 4c 89 ea 4c 89 ee 48 c7 c7 58 9e 0d 84 e8 64 90 01 00 <0f> 0b 0f b6 f0 48 c7 c7 20 02 c5 84 88 45 f7 e8 10 9f bc 00 0f b6
May 12 02:58:28 LegionSlim5 kernel: RSP: 0018:ffffd221cfcbf9c0 EFLAGS: 00010246
May 12 02:58:28 LegionSlim5 kernel: RAX: 00000000000000a8 RBX: ffffffff83a068ca RCX: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: RBP: ffffd221cfcbf9f0 R08: 0000000000000000 R09: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000005
May 12 02:58:28 LegionSlim5 kernel: R13: ffffffffc3ca29ae R14: 0000000000000001 R15: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: FS:  000077eb6f752c80(0000) GS:ffff8efcd9080000(0000) knlGS:0000000000000000
May 12 02:58:28 LegionSlim5 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May 12 02:58:28 LegionSlim5 kernel: CR2: 0000618eaf062940 CR3: 000000036486c000 CR4: 0000000000f50ef0
May 12 02:58:28 LegionSlim5 kernel: PKRU: 55555554
May 12 02:58:28 LegionSlim5 kernel: Call Trace:
May 12 02:58:28 LegionSlim5 kernel:  <TASK>
May 12 02:58:28 LegionSlim5 kernel:  arch_jump_label_transform_queue+0x37/0x90
May 12 02:58:28 LegionSlim5 kernel:  __jump_label_update+0x47/0x100
May 12 02:58:28 LegionSlim5 kernel:  jump_label_update+0x5c/0x110
May 12 02:58:28 LegionSlim5 kernel:  static_key_slow_inc_cpuslocked+0x53/0xa0
May 12 02:58:28 LegionSlim5 kernel:  static_key_slow_inc+0x1f/0x40
May 12 02:58:28 LegionSlim5 kernel:  freeze_processes+0xd1/0xe0
May 12 02:58:28 LegionSlim5 kernel:  enter_state+0xe0/0x610
May 12 02:58:28 LegionSlim5 kernel:  pm_suspend+0x49/0x90
May 12 02:58:28 LegionSlim5 kernel:  state_store+0x2e/0x60
May 12 02:58:28 LegionSlim5 kernel:  kobj_attr_store+0x12/0x40
May 12 02:58:28 LegionSlim5 kernel:  sysfs_kf_write+0x74/0x90
May 12 02:58:28 LegionSlim5 kernel:  kernfs_fop_write_iter+0x161/0x210
May 12 02:58:28 LegionSlim5 kernel:  vfs_write+0x25b/0x490
May 12 02:58:28 LegionSlim5 kernel:  ksys_write+0x71/0xf0
May 12 02:58:28 LegionSlim5 kernel:  __x64_sys_write+0x19/0x30
May 12 02:58:28 LegionSlim5 kernel:  x64_sys_call+0x22f/0x2390
May 12 02:58:28 LegionSlim5 kernel:  do_syscall_64+0x115/0x5a0
May 12 02:58:28 LegionSlim5 systemd[1]: systemd-suspend.service: Main process exited, code=killed, status=11/SEGV
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 systemd[1]: systemd-suspend.service: Failed with result 'signal'.
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? set_ptes.isra.0+0x3b/0x90
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? do_anonymous_page+0x105/0x4d0
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? handle_pte_fault+0x1cb/0x1f0
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? __handle_mm_fault+0x493/0x720
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? count_memcg_events+0x103/0x250
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? handle_mm_fault+0x1c0/0x2e0
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? arch_exit_to_user_mode_prepare.isra.0+0xd/0x100
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? irqentry_exit+0x97/0x5a0
May 12 02:58:28 LegionSlim5 kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
May 12 02:58:28 LegionSlim5 kernel:  ? exc_page_fault+0x94/0x1e0
May 12 02:58:28 LegionSlim5 kernel:  ? common_interrupt+0x61/0xe0
May 12 02:58:28 LegionSlim5 kernel:  entry_SYSCALL_64_after_hwframe+0x76/0x7e
May 12 02:58:28 LegionSlim5 kernel: RIP: 0033:0x77eb6eea06c6
May 12 02:58:28 LegionSlim5 kernel: Code: 47 ba 04 00 00 00 48 8b 05 3f 17 17 00 64 89 10 48 c7 c2 ff ff ff ff c9 48 89 d0 c3 0f 1f 84 00 00 00 00 00 48 8b 45 10 0f 05 <48> 89 c2 48 3d 00 f0 ff ff 77 0f c9 48 89 d0 c3 66 2e 0f 1f 84 00
May 12 02:58:28 LegionSlim5 kernel: RSP: 002b:00007ffff2dfd0d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
May 12 02:58:28 LegionSlim5 kernel: RAX: ffffffffffffffda RBX: 0000618eaf057010 RCX: 000077eb6eea06c6
May 12 02:58:28 LegionSlim5 kernel: RDX: 0000000000000004 RSI: 0000618eaf061930 RDI: 0000000000000007
May 12 02:58:28 LegionSlim5 kernel: RBP: 00007ffff2dfd0e0 R08: 0000000000000000 R09: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
May 12 02:58:28 LegionSlim5 kernel: R13: 0000000000000004 R14: 0000618eaf061930 R15: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel:  </TASK>
May 12 02:58:28 LegionSlim5 kernel: Modules linked in: xt_conntrack xt_MASQUERADE xfrm_user xfrm_algo xt_set ip_set nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_addrtype nft_compat nf_tables ccm snd_seq_dummy rfcomm snd_hrtimer cmac algif_hash algif_skcipher af_alg mptcp_diag xsk_diag tcp_diag udp_diag raw_diag inet_diag unix_diag af_packet_diag netlink_diag nvidia_uvm(POE) qrtr bnep vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) kvm_amd kvm irqbypass binfmt_misc nvidia_drm(POE) nvidia_modeset(POE) snd_sof_amd_acp70 snd_sof_amd_acp63 snd_sof_amd_vangogh snd_sof_amd_rembrandt snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp btusb intel_rapl_msr snd_sof amd_atl btmtk btrtl intel_rapl_common btbcm btintel nvidia(POE) nls_iso8859_1 snd_sof_utils spd5118 snd_pci_ps snd_soc_acpi_amd_match snd_hda_codec_alc269 snd_soc_acpi_amd_sdca_quirks snd_hda_codec_realtek_lib snd_amd_sdw_acpi snd_hda_scodec_component soundwire_amd soundwire_generic_allocation soundwire_bus snd_hda_codec_generic snd_hda_codec_nvhdmi
May 12 02:58:28 LegionSlim5 kernel:  snd_hda_codec_atihdmi snd_soc_sdca amdgpu snd_hda_codec_hdmi snd_soc_core uvcvideo snd_compress snd_hda_intel ac97_bus videobuf2_vmalloc mt7921e uvc snd_pcm_dmaengine snd_hda_codec mt7921_common videobuf2_memops bluetooth usbhid snd_hda_core snd_rpl_pci_acp6x mt792x_lib videobuf2_v4l2 lenovo_wmi_gamezone edac_mce_amd snd_intel_dspcfg mt76_connac_lib videobuf2_common ghash_clmulni_intel snd_intel_sdw_acpi lenovo_wmi_other snd_acp_pci snd_hwdep lenovo_wmi_helpers videodev mt76 snd_amd_acpi_mach aesni_intel snd_ctl_led rapl snd_acp_legacy_common snd_seq_midi amdxcp drm_panel_backlight_quirks mc lenovo_wmi_events firmware_attributes_class lenovo_wmi_capdata lenovo_wmi_hotkey_utilities snd_seq_midi_event snd_pci_acp6x gpu_sched wmi_bmof nvidia_wmi_ec_backlight snd_rawmidi mac80211 snd_pcm drm_buddy drm_exec drm_suballoc_helper snd_pci_acp5x snd_seq drm_display_helper snd_rn_pci_acp3x k10temp snd_seq_device cec i2c_piix4 ideapad_laptop snd_acp_config i2c_smbus cfg80211 snd_soc_acpi sparse_keymap snd_timer
May 12 02:58:28 LegionSlim5 systemd[1]: Failed to start systemd-suspend.service - System Suspend.
May 12 02:58:28 LegionSlim5 kernel:  rc_core i2c_algo_bit ccp snd_pci_acp3x libarc4 platform_profile snd soundcore drm_ttm_helper ttm amd_pmc joydev input_leds mac_hid sch_fq_codel br_netfilter bridge iptable_filter ip6table_filter parport_pc lp ppdev ip6_tables ip_tables arp_tables stp overlay parport x_tables llc msr efi_pstore nfnetlink dmi_sysfs autofs4 ucsi_acpi typec_ucsi hid_multitouch typec hid_generic serio_raw thunderbolt nvme i2c_hid_acpi video nvme_core i2c_hid r8169 hid nvme_keyring nvme_auth hkdf realtek wmi
May 12 02:58:28 LegionSlim5 kernel: ---[ end trace 0000000000000000 ]---
May 12 02:58:28 LegionSlim5 kernel: Console: switching to colour frame buffer device 160x50
May 12 02:58:28 LegionSlim5 kernel: pstore: backend (efi_pstore) writing error (-12)
May 12 02:58:28 LegionSlim5 kernel: RIP: 0010:__jump_label_patch.cold+0x24/0x26
May 12 02:58:28 LegionSlim5 systemd[1]: Dependency failed for suspend.target - Suspend.
May 12 02:58:28 LegionSlim5 kernel: Code: f8 e9 44 f7 19 00 48 c7 c3 b8 89 65 85 41 56 45 89 e1 49 89 d8 4c 89 e9 4c 89 ea 4c 89 ee 48 c7 c7 58 9e 0d 84 e8 64 90 01 00 <0f> 0b 0f b6 f0 48 c7 c7 20 02 c5 84 88 45 f7 e8 10 9f bc 00 0f b6
May 12 02:58:28 LegionSlim5 systemd[1]: suspend.target: Job suspend.target/start failed with result 'dependency'.
May 12 02:58:28 LegionSlim5 kernel: RSP: 0018:ffffd221cfcbf9c0 EFLAGS: 00010246
May 12 02:58:28 LegionSlim5 kernel: RAX: 00000000000000a8 RBX: ffffffff83a068ca RCX: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
May 12 02:58:28 LegionSlim5 systemd-logind[1648]: Operation 'suspend' finished.
May 12 02:58:28 LegionSlim5 kernel: RBP: ffffd221cfcbf9f0 R08: 0000000000000000 R09: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000005
May 12 02:58:28 LegionSlim5 kernel: R13: ffffffffc3ca29ae R14: 0000000000000001 R15: 0000000000000000
May 12 02:58:28 LegionSlim5 kernel: FS:  000077eb6f752c80(0000) GS:ffff8efcd8a00000(0000) knlGS:0000000000000000
May 12 02:58:28 LegionSlim5 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May 12 02:58:28 LegionSlim5 kernel: CR2: 00005f6caa496168 CR3: 000000036486c000 CR4: 0000000000f50ef0
May 12 02:58:28 LegionSlim5 kernel: PKRU: 55555554
May 12 02:58:28 LegionSlim5 systemd-resolved[418]: Closing all remaining TCP connections.
May 12 02:58:28 LegionSlim5 systemd-resolved[418]: Resetting learnt feature levels on all servers.
May 12 02:58:28 LegionSlim5 warp-svc[1666]: 2026-05-11T21:28:28.039Z DEBUG actor_connectivity::connectivity: New power state Wakeup
RDP remote login connection to Ubuntu 26.04: black screen https://askubuntu.com/questions/1566604/rdp-remote-login-connection-to-ubuntu-26-04-black-screen

I am unsuccessful in establishing a RDP remote login connection to Ubuntu 26.04LTS.
I followed the instructions here. It is a fresh installation of Ubuntu.

As a client I use Remmina on 24.04. Authentication works, but the screen remains black, with no error. Please see screenshot. The top border of the screen shows some "colors" when looking at it exactly.

enter image description here

In contrast, RDP Remote Desktop sharing works. Connection from other client devices equally do not work.

P.S. I did some further testing today, using a Windows 11 machine to connect. In fact, the Windows RDP client connects and logs in successfully to the Ubuntu 26.04 machine. So it is likely to be Remmina having some issues here?!The Windows RDP client only gives a warning about encryption: enter image description here

Remmina logs as follows:

System Info: "UID" : "0GNT7W4EQVOE1W-712ba847be", "REMMINAVERSION" : { "version" : "1.4.35", "git_revision" : "n/a", "snap_build" : 0, "flatpak_build" : 0 }, "SYSTEM" : { "kernel_name" : "Linux", "kernel_release" : "6.17.0-22-generic", "kernel_arch" : "x86_64", "lsb_distributor" : "Ubuntu\\n", "lsb_distro_description" : "Ubuntu 24.04.3 LTS\\n", "lsb_distro_release" : "24.04\\n", "lsb_distro_codename" : "noble\\n", "etc_release" : { "/etc/debian_version" : "trixie/sid\\n", "/etc/lsb-release" : "DISTRIB_ID=Ubuntu\\nDISTRIB_RELEASE=24.04\\nDISTRIB_CODENAME=noble\\nDISTRIB_DESCRIPTION="Ubuntu 24.04.3 LTS"\\n", "/etc/os-release" : "PRETTY_NAME="Ubuntu 24.04.3 LTS"\\nNAME="Ubuntu"\\nVERSION_ID="24.04"\\nVERSION="24.04.3 LTS (  

This window can help you find connection problems.
You can stop and start the logging at any moment using the On/Off switch.
The stats button (Ctrl+T), can be useful to gather system info you may share when reporting a bug.
There is more info about debugging Remmina on https://gitlab.com/Remmina/Remmina/-/wikis/Usage/Remmina-debugging
(DEBUG) - (rcw_map_event) - Mapping: RemminaConnectionWindow
(DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function
(DEBUG) - (remmina_protocol_widget_open_connection_real) - Opening connection
(DEBUG) - (remmina_rdp_event_init) - Disable smooth scrolling is set to 0
(DEBUG) - (remmina_rdp_event_init) - Adding GDK_SMOOTH_SCROLL_MASK
(DEBUG) - (remmina_protocol_widget_open_connection_real) - Have SSH
(DEBUG) - (remmina_rdp_main) - RDP data path is /home/al/.local/share/remmina/RDP
(DEBUG) - (remmina_rdp_main) - Not using system proxy settings
(DEBUG) - (remmina_rdp_tunnel_init) - Tunnel init
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - SSH tunnel initialzation…
(DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: RemminaConnectionWindow
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - Calling remmina_public_get_server_port (tunnel)
(DEBUG) - (remmina_protocol_widget_start_direct_tunnel) - server: 192.168.178.88, port: 3389
(DEBUG) - (remmina_rdp_tunnel_init) - protocol_plugin_start_direct_tunnel() returned [192.168.178.88]:3389
(DEBUG) - (remmina_rdp_tunnel_init) - Tunnel has been optionally initialzed. Now connecting to 192.168.178.88:3389
(DEBUG) - (remmina_rdp_main) - gfx_h264_available: 0
(DEBUG) - (remmina_rdp_main) - Resolution set by the user: 1552x788
(DEBUG) - (remmina_rdp_main) - Resolution set after workarounds: 1552x788
(DEBUG) - (remmina_rdp_main) - proxy_type: (null)
(DEBUG) - (remmina_rdp_main) - proxy_username: (null)
(DEBUG) - (remmina_rdp_main) - proxy_password: (null)
(DEBUG) - (remmina_rdp_main) - proxy_hostname: (null)
(DEBUG) - (remmina_rdp_main) - proxy_port: 80
(DEBUG) - (remmina_rdp_main) - Network settings not set
(DEBUG) - (remmina_rdp_main) - rdp_keyboard_remapping_list: (null)
(DEBUG) - (remmina_rdp_main) - Log level set to to INFO
(DEBUG) - (remmina_rdp_post_connect) - bpp: 32
(DEBUG) - (remmina_rdp_post_connect) - CAIRO_FORMAT_RGB24
(DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpdr has been opened
(DEBUG) - (remmina_rdp_event_connected) - [2026-05-09T13:43:58.423315+02] - alAcer - al - Connected to 192.168.178.88 via RDP
(DEBUG) - (rco_on_connect) - Connect signal emitted
(DEBUG) - (rco_on_connect) - We save the last successful connection date
(DEBUG) - (remmina_file_state_last_success) - State file /home/al/.cache/remmina/group_rdp_virtal-fernanmeldung-192-168-178-88-3389_192-168-178-88-3389.remmina.state.
(DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel rdpsnd has been opened
(DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel cliprdr has been opened
(DEBUG) - (remmina_file_state_last_success) - Last connection made on 20260509.
(DEBUG) - (rco_on_connect) - Saving credentials
(DEBUG) - (rco_on_connect) - Trying to present the window
(DEBUG) - (remmina_rdp_OnChannelConnectedEventHandler) - Channel drdynvc has been opened
(DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: RemminaConnectionWindow
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
(DEBUG) - (rcw_map_event) - Mapping: RemminaConnectionWindow
(DEBUG) - (remmina_protocol_widget_map_event) - Calling plugin mapping function
(DEBUG) - (remmina_rdp_event_on_map) - Map event received, disabling TS_SUPPRESS_OUTPUT_PDU 
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: RemminaConnectionWindow
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
(DEBUG) - (rcw_toolbar_screenshot) - deny_screenshot_clipboard is set to true
(DEBUG) - (remmina_rdp_get_screenshot) - allocating 4891904 bytes for a full screenshot
(DEBUG) - (rcw_toolbar_screenshot) - Screenshot from plugin: w=1552 h=788 bpp=32 bytespp=4

(DEBUG) - (remmina_rdp_event_on_focus_in) - Top level name is: RemminaConnectionWindow
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10: owner-change event received
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is different than me: new=(nil) me=0x64eaee922e10
(DEBUG) - (remmina_rdp_event_on_clipboard) - gp=0x64eaee922e10 owner-change: new owner is not me: Sending local clipboard format list to server.
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) - gp=0x64eaee922e10 sending to server the following local clipboard content formats
(DEBUG) - (remmina_rdp_cliprdr_get_client_format_list) -      local clipboard format text/plain;charset=utf-8 will be sent to remote as 13
Ubuntu workspace isolation not working for swapped shortcuts https://askubuntu.com/questions/1566527/ubuntu-workspace-isolation-not-working-for-swapped-shortcuts

System setup

  • OS: Ubuntu 24.04.4 LTS
  • Desktop Environment: GNOME Shell 46.0

Custom shortcuts

I swapped the default behavior:

  • Alt + TabSwitch Windows
  • Super + TabSwitch Applications

Current setting

In:

Settings → Multitasking

I enabled:

“Include apps from the current workspace only”

under the Application Switching section.

Expected behavior

When using Alt + Tab (Switch Windows), I expect to see only windows belonging to the current workspace.

Actual behavior

Windows from other workspaces still appear in the switcher.

This happens both:

  • with multiple windows of the same application
  • and with windows from different applications

Example 1

  • Workspace 1 → Brave window (website ABC)
  • Workspace 2 → Brave window (website XYZ)

While on Workspace 1, pressing Alt + Tab still shows the Brave window from Workspace 2.

Example 2

  • Workspace 1 → Brave
  • Workspace 2 → Firefox

While on Workspace 1, pressing Alt + Tab still shows the Firefox window from Workspace 2.

Question

How can I make Alt + Tab strictly respect the current workspace and show only windows from the active workspace?

How do I fix a hosed 22.04->24.04 update? https://askubuntu.com/questions/1566483/how-do-i-fix-a-hosed-22-04-24-04-update

I just did a do-release-update on a server 22.04 (to 24.04) and while it was going I could tell something was wrong: lots of weird messages. No outright error though. At the end it finished without error. I did a reboot... and the machine never started.

I managed to boot in single mode and look around the system. I think some library versions are wrong, some services won't start (including network) and the system is not at the right version:

# NetworkManager --no-daemon
NetworkManager: symbol lookup error: /lib/x86_64-linux-gnu/libnetplan.so.1: undefined symbol: g_string_free_and_steal

# cat /etc/os-release
VERSION_ID="22.04"
[...]

What can I do to try and fix this mess ? Some kind of fix-broken command (but without network...) ? Boot from a live-usb 22.04 (or 24.04 ?) and... do something ?

Error after switching from Gnome to i3wm: "Error: cannot open display: :0" https://askubuntu.com/questions/1566402/error-after-switching-from-gnome-to-i3wm-error-cannot-open-display-0

Description

Everytime I'm switching from Gnome Desktop to i3wm in my laptop, I get the following error when trying to run Firefox:

$ firefox
Error: cannot open display: :0

I get the same result when I run Firefox with snap:

$ sudo snap run firefox
mkdir: cannot create directory ‘/run/user/0’: Permission denied
Authorization required, but no authorization protocol specified

Error: cannot open display: :0

So basically:

  • Login on Gnome Desktop environment
  • Open Firefox here
  • Do some stuff, close Firefox and log out
  • Login using the same credentials but on i3wm
  • Error when trying to open Firefox: Error: cannot open display: :0

Observation

  • This also happens the other way (i3wm -> Gnome)
  • I doesn't affect other app, only Firefox (I tested with Nautilus and Shotwell)
  • I already tried to re login; doesn't solve it
  • Content of /etc/X11/xinit/xinitrc:
. /etc/X11/Xsession`
  • Output of env | grep XAUTH:
XAUTHORITY=/run/user/1000/gdm/Xauthority
  • Output of loginctl:
loginctl
SESSION  UID USER     SEAT  TTY
      5 1000 myusername seat0 tty2

1 sessions listed.

Troubleshooting

Following this answer, I check if X server is running using DISPLAY:

$ echo $DISPLAY
:0

When trying to troubleshoot it, the Xorg display server is also running properly:

$ ps aux | grep "[X]org"
username   85508  2.3  1.0 1487000 77472 tty2    Sl+  17:40   1:06 /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3

When reading this forum thread, a user asks if I'm

trying to run firefox an a different user

I don't since I already closed the Firefox instance on the Gnome session.

I'm a noob considering window manager but from my understanding after reading this answer from How does Linux's display work? (and especially this picture), the Gnome Desktop Environment and i3wm are both client to the same running display server so there should be no conflict. There's clearly something that I don't get here.

What's the meaning of the error cannot open display: :0 and how can I solve it ?

Environment

  • Firefox version: Mozilla Firefox 150.0.1
  • OS: Ubuntu 22.04 LTS
  • i3: i3 version 4.23-non-git

UPDATE

It turns out I was using Wayland on Gnome and X11 on i3wm.

On Gnome:

$ ps aux | grep -E "X|Xvfb|Xwayland|Xorg|xorg" | grep -v grep
username    6048  0.0  0.0   2892  1760 ?        Ss   08:42   0:00 sh -c /usr/bin/ibus-daemon --panel disable $([ "$XDG_SESSION_TYPE" = "x11" ] && echo "--xim")
username    6074  0.0  0.8 790280 68456 ?        Sl   08:42   0:00 /usr/bin/Xwayland :0 -rootless -noreset -accessx -core -auth /run/user/1000/.mutter-Xwaylandauth.0JVCP3 -listen 4 -listen 5 -displayfd 6 -initfd 7

$ ps -ef | grep -i xorg

On i3:

$ ps aux | grep -E "X|Xvfb|Xwayland|Xorg|xorg" | grep -v grep

$ ps aux | grep "[X]org"
username   85508  2.3  1.0 1487000 77472 tty2    Sl+  17:40   1:06 /usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3

I now noticed that there's the option of login with Gnome on X11 on the login screen. I tested it and this issue doesn't happend on Gnome on X11.

So I guess the error is that there's conflict between X11 and Wayland. One doesn't release a resource that the other should use.

I tried to delete the socket file under /tmp/.X11-unix/ but doesn't change anything.

Issue creating an ISO with autoinstall https://askubuntu.com/questions/1566283/issue-creating-an-iso-with-autoinstall

My goal is to create a bootable USB drive with Ubuntu 24.04 that includes an autoinstall configuration. I’m relatively new to Linux and Ubuntu, so I may be missing something basic.

I’m able to successfully create a standard bootable USB using the official ubuntu-24.04.4-desktop-amd64.iso. However, when I try to customize the ISO, I run into problems.

Here’s what I’m doing:

  1. I extract the contents of the original ISO:

    sudo rsync -av ~/iso_mod/mount/ ~/iso_mod/extracted/
    
  2. I then rebuild the ISO using:

    sudo xorriso -as mkisofs -r \
      -V "Ubuntu 24.04 Custom" \
      -o custom-ubuntu-24.04.iso \
      -J -l \
      -b boot/grub/i386-pc/eltorito.img \
      -c boot.catalog \
      -no-emul-boot -boot-load-size 4 -boot-info-table \
      --grub2-boot-info \
      -eltorito-alt-boot \
      -e efi.img \
      -no-emul-boot -isohybrid-gpt-basdat \
      ./extracted
    
  3. Finally, I write the ISO to a USB drive:

    sudo dd if=/home/gene/iso_mod/custom-ubuntu-24.04.iso of=/dev/sdb bs=4M conv=fsync status=progress
    

The issue is that the resulting USB drive is not recognized as bootable on the target desktop system.

What am I missing in this process? Is there a reliable guide or resource that explains how to correctly modify and rebuild a bootable Ubuntu ISO with autoinstall support?

I realize that these steps just recreate the ISO but it doesn't work and if I can't get that working I will not be able to get autoinstall working.

Thank you for your help.

HP EliteBook x360 1030 G8 — Ubuntu (24.04 and 26.04) installation fails with "could not get path to dev from kname: nvme0n1p5 https://askubuntu.com/questions/1566261/hp-elitebook-x360-1030-g8-ubuntu-24-04-and-26-04-installation-fails-with-co

I'm trying to install Ubuntu 24.04 LTS alongside Windows 11 (dual boot) on a brand new HP EliteBook x360 1030 G8, and the installation consistently fails at the partitioning step.

Hardware:

- HP EliteBook x360 1030 G8

- Samsung MZVLW256HEHP-000L7 NVMe SSD (256GB)

- Windows 11 pre-installed

Disk layout (from sudo parted /dev/nvme0n1 print):

Number  Start   End     Size    File system  Name
1       1049kB  211MB   210MB   fat32        EFI system partition  (boot, esp)
2       211MB   228MB   16.8MB               Microsoft reserved partition (msftres)
3       228MB   42.0GB  41.8GB  ntfs         Basic data partition (msftdata, no_automount)
4       255GB   256GB   826MB   ntfs         (hidden, diag, no_automount)

[213GB free space between partition 3 and 4]

What I did:

  • I first tried the automatic "Install Ubuntu alongside Windows" option, which failed

  • Then I tryed to select "Something else" for manual partitioning, created a new ext4 partition (nvme0n1p5, ~212GB) in the free space, mounted it on `/`, set the bootloader to `/dev/nvme0n1`, then clicked "Install Now".

Error:

In both cases :

OSError: could not get path to dev from kname: nvme0n1p5 could not get path to dev from kname: nvme0n1p5

What I already tried:

- Ubuntu 26.04 and 24.04 — same error on both

- Recreating the USB drive with Balena Etcher

- Disabling wifi during installation

- Minimal installation without updates or third-party drivers

- Checked Secure Boot — already disabled

- Checked Intel VMD in BIOS — "Configure Storage Controller for VMD" is unchecked

- BIOS is up to date according to HP diagnostic tool

Has anyone any idea ?

Thank you

How do I fix CVE-2026-31431 on Ubuntu 24.04 LTS? https://askubuntu.com/questions/1566254/how-do-i-fix-cve-2026-31431-on-ubuntu-24-04-lts

We are running a bunch of containers for a cyber security teaching environment, where students can execute arbitrary commands (unprivileged).

Our system (Ubuntu 24.04.4 LTS) is affected by the recently-published "Copy Fail" vulnerability (CVE-2026-31431).

Unfortunately, updating did not produce any new kernel packages, and we are still stuck with 6.8.0-110:

# uname -a
Linux teaching-host 6.8.0-110-generic #110-Ubuntu SMP PREEMPT_DYNAMIC Thu Mar 19 15:09:20 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux

PoC exploit (makes su not ask for passwords until undoing it below or rebooting):

$ cat exploit.py | python3 && su
# id
uid=0(root) gid=1000(user) groups=1000(user),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),101(lxd),988(docker)
# sudo sysctl -w vm.drop_caches=3 # Undo the exploit

How can we harden our system until an official patch package becomes available?

Sleep/Suspend function not working on Lenovo ThinkBook 16 G8 IRL https://askubuntu.com/questions/1565734/sleep-suspend-function-not-working-on-lenovo-thinkbook-16-g8-irl

Suspend/hibernate not working - no usable answers were provided, the only proposed solution does not work.

This is NOT a duplicate of "Computer does not resume from suspend". The computer does not sleep or suspend at all and answers in this thread are not relevant. The question I had asked before had no functional solutions.

This is NOT a duplicate of 24.04 doesn't sleep as that has an "answer" that I cannot downvote or delete as the "answer" doesn't work.

I have a brand new Lenovo ThinkBook 16 G8 IRL running Ubuntu 24.04.3. The computer has 32gb of RAM and 2 physical SSDs, one for a Win11 installation and the other for a fresh Ubuntu installation.

Sleep/Suspend works perfectly in the W11 environment, but not in Ubuntu. I have tested using Ubuntu versions 18 to 24, Mint Cinamonn 22 and Pop!_OS 22 and 24. They have all exhibited the same behavior.

The screen goes black, it looks like the machine tries to sleep, but then wakes up again within 5 seconds. This makes it impossible to use as a true laptop as I have to save all work and shut down the computer whenever I will travel with it - which is quite often.

This is not a problem of the computer not restarting or restoring from suspend, the computer does not enter suspend in the first place.

I agree the suspend command should work out of the box, so I'm not understanding this. I ran the below command and had the same effect - black screen for 3-5 seconds, then back to a login screen.

Swap is on and has plenty of space (32gb of RAM)

I have followed several recommendations and followed several directions.

There are no external devices plugged in

I have attempted to disable USB devices, use Gnome Tweaks to enable suspend, changed USB wake properties, but I had no luck.

Updates: Computer updated to 24.04.4 New dmesg added at the end Kernel updated to 6.17.0-20-generic

UPDATE: I noticed that the file /etc/initramfs-tools/conf.d/resume does not exist. In fact, the conf.d folder is empty.

Latest update following Daniel T's directions to enter suspend via sudo in terminal - note the computer exhibited the same behavior: the screen went black for a couple of seconds then just turned back on.

Latest updates following Daniel T's commands - I now see several entries marked as "enabled":

at /proc/acpi/wakeup Device S-state Status Sysfs node PEG0 S4 *disabled pci:0000:00:06.0 PEGP S4 *disabled pci:0000:01:00.0 PEG1 S4 *disabled PEGP S4 *disabled PEG2 S4 *enabled pci:0000:00:06.2 PEGP S4 *disabled pci:0000:02:00.0 GLAN S4 *enabled pci:0000:00:1f.6 XHCI S4 *enabled pci:0000:00:14.0 XDCI S4 *disabled HDAS S4 *disabled pci:0000:00:1f.3 CNVW S4 *disabled pci:0000:00:14.3 RP01 S4 *disabled pci:0000:00:1c.0 PXSX S4 *disabled RP02 S4 *disabled PXSX S4 *disabled PXSX S4 *disabled RP04 S4 *disabled PXSX S4 *disabled RP05 S4 *enabled pci:0000:00:1c.4 PXSX S4 *disabled pci:0000:45:00.0 RP06 S4 *disabled PXSX S4 *disabled RP07 S4 *disabled PXSX S4 *disabled RP08 S4 *disabled PXSX S4 *disabled RP09 S4 *disabled PXSX S4 *disabled RP10 S4 *disabled PXSX S4 *disabled RP11 S4 *disabled PXSX S4 *disabled RP12 S4 *disabled PXSX S4 *disabled RP13 S4 *disabled PXSX S4 *disabled RP14 S4 *disabled PXSX S4 *disabled RP15 S4 *disabled PXSX S4 *disabled RP16 S4 *disabled PXSX S4 *disabled RP17 S4 *disabled PXSX S4 *disabled RP18 S4 *disabled PXSX S4 *disabled RP19 S4 *disabled PXSX S4 *disabled RP20 S4 *disabled PXSX S4 *disabled RP21 S4 *disabled PXSX S4 *disabled RP22 S4 *disabled PXSX S4 *disabled RP23 S4 *disabled PXSX S4 *disabled RP24 S4 *disabled PXSX S4 *disabled TXHC S4 *enabled pci:0000:00:0d.0 TDM0 S4 *enabled pci:0000:00:0d.2 TDM1 S4 *disabled TRP0 S4 *disabled pci:0000:00:07.0 PXSX S4 *disabled TRP1 S4 *disabled PXSX S4 *disabled TRP2 S4 *disabled PXSX S4 *disabled TRP3 S4 *disabled PXSX S4 *disabled AWAC S4 *enabled platform:ACPI000E:00 PWRB S4 *enabled platform:PNP0C0C:00 LID0 S3 *enabled platform:PNP0C0D:00

PEG0 PEG2 GLAN XHCI RP01 RP05 TXHC TDM0 TRP0 AWAC PWRB LID0 rogbuntu@rogbuntu-thinkbook:~$ cat /sys/bus/acpi/devices/device:06/path _SB_.PC00.PEG2.PEGP

Before suspend command:

name active_count event_count wakeup_count expire_count active_since total_time max_time last_change prevent_suspend_time INTC10A1:00 0 0 0 0 00 0 0 0 INT33A1:00 0 0 0 0 00 0 0 0 VPC2004:00 0 0 0 0 00 0 0 0 INTC1070:00 0 0 0 0 00 0 0 0 INTC1070:00 0 0 0 0 00 0 0 0 INTC10A0:00 0 0 0 0 00 0 0 0 ACPI000C:00 0 0 0 0 00 0 0 0 ACPI000E:00 0 0 0 0 00 0 0 0 ACPI000E:00 0 0 0 0 00 0 0 0 ucsi-source-psy-USBC000:002 1 1 0 00 0 0 1743 0 ucsi-source-psy-USBC000:001 1 1 0 00 0 0 1659 0 USBC000:00 0 0 0 0 00 0 0 0 0000:00:1f.6 0 0 0 0 00 0 0 0 0000:00:0d.2 0 0 0 0 00 0 0 0 domain0 0 0 0 0 00 0 0 0 mmc0 0 0 0 0 00 0 0 0 0-0 0 0 0 0 00 0 0 0 FTCS0038:00 0 0 0 0 00 0 0 0 i2c-FTCS0038:00 2014 2014 0 0 00 0 84746 0 PNP0C14:07 0 0 0 0 00 0 0 0 PNP0C14:06 0 0 0 0 00 0 0 0 PNP0C14:05 0 0 0 0 00 0 0 0 PNP0C14:04 0 0 0 0 00 0 0 0 PNP0C14:03 0 0 0 0 00 0 0 0 PNP0C14:02 0 0 0 0 00 0 0 0 PNP0C14:01 0 0 0 0 00 0 0 0 PNP0C14:00 0 0 0 0 00 0 0 0 INTC1055:00 0 0 0 0 00 0 0 0 alarmtimer.0.auto 0 0 0 0 00 0 0 0 rtc_cmos 0 0 0 0 00 0 0 0 serio0 187 187 0 0 00 0 99606 0 0000:00:14.0 0 0 0 0 00 0 0 0 0000:00:0d.0 0 0 0 0 00 0 0 0 PNP0C0A:00 0 0 0 0 00 0 0 0 PNP0C0E:00 0 0 0 0 00 0 0 0 ADP1 1 1 0 0 02 2 1093 0 ACPI0003:00 0 0 0 0 00 0 0 0 PNP0C0D:00 0 0 0 0 00 0 0 0 PNP0C0C:00 0 0 0 0 00 0 0 0 PNP0A08:00 0 0 0 0 00 0 0 0 device:55 0 0 0 0 00 0 0 0 device:06 0 0 0 0 00 0 0 0 device:02 0 0 0 0 00 0 0 0 device:1d 0 0 0 0 00 0 0 0 device:1c 0 0 0 0 00 0 0 0 device:33 0 0 0 0 00 0 0 0 device:1b 0 0 0 0 00 0 0 0 0000:00:1c.4 0 0 0 0 00 0 0 0 device:54 0 0 0 0 00 0 0 0 0000:00:1c.0 0 0 0 0 00 0 0 0 device:4c 0 0 0 0 00 0 0 0 device:8e 0 0 0 0 00 0 0 0 device:38 0 0 0 0 00 0 0 0 device:35 0 0 0 0 00 0 0 0 device:4b 0 0 0 0 00 0 0 0 device:1e 0 0 0 0 00 0 0 0 device:98 0 0 0 0 00 0 0 0 device:91 0 0 0 0 00 0 0 0 device:1a 0 0 0 0 00 0 0 0 0000:00:07.0 0 0 0 0 00 0 0 0 device:9a 0 0 0 0 00 0 0 0 0000:00:06.2 0 0 0 0 00 0 0 0 device:05 0 0 0 0 00 0 0 0 0000:00:06.0 0 0 0 0 00 0 0 0 device:01 0 0 0 0 00 0 0 0 device:18 0 0 0 0 00 0 0 0 LNXVIDEO:00 0 0 0 0 00 0 0 0 device:00 0 0 0 0 00 0 0 0 deleted 0 0 0 0 00 0 0 0

After suspend command:

name active_count event_count wakeup_count expire_count active_since total_time max_time last_change prevent_suspend_time INTC10A1:00 0 0 0 0 00 0 0 0 INT33A1:00 0 0 0 0 00 0 0 0 VPC2004:00 0 0 0 0 00 0 0 0 INTC1070:00 0 0 0 0 00 0 0 0 INTC1070:00 0 0 0 0 00 0 0 0 INTC10A0:00 0 0 0 0 00 0 0 0 ACPI000C:00 0 0 0 0 00 0 0 0 ACPI000E:00 0 0 0 0 00 0 0 0 ACPI000E:00 0 0 0 0 00 0 0 0 ucsi-source-psy-USBC000:002 1 1 0 00 0 0 1743 0 ucsi-source-psy-USBC000:001 1 1 0 00 0 0 1659 0 USBC000:00 0 0 0 0 00 0 0 0 0000:00:1f.6 0 0 0 0 00 0 0 0 0000:00:0d.2 0 0 0 0 00 0 0 0 domain0 0 0 0 0 00 0 0 0 mmc0 0 0 0 0 00 0 0 0 0-0 0 0 0 0 00 0 0 0 FTCS0038:00 0 0 0 0 00 0 0 0 i2c-FTCS0038:00 7610 7610 0 0 02 0 180991 0 PNP0C14:07 0 0 0 0 00 0 0 0 PNP0C14:06 0 0 0 0 00 0 0 0 PNP0C14:05 0 0 0 0 00 0 0 0 PNP0C14:04 0 0 0 0 00 0 0 0 PNP0C14:03 0 0 0 0 00 0 0 0 PNP0C14:02 0 0 0 0 00 0 0 0 PNP0C14:01 0 0 0 0 00 0 0 0 PNP0C14:00 0 0 0 0 00 0 0 0 INTC1055:00 0 0 0 0 00 0 0 0 alarmtimer.0.auto 0 0 0 0 00 0 0 0 rtc_cmos 0 0 0 0 00 0 0 0 serio0 339 339 0 0 00 0 183827 0 0000:00:14.0 0 0 0 0 00 0 0 0 0000:00:0d.0 0 0 0 0 00 0 0 0 PNP0C0A:00 0 0 0 0 00 0 0 0 PNP0C0E:00 0 0 0 0 00 0 0 0 ADP1 1 1 0 0 02 2 1093 0 ACPI0003:00 0 0 0 0 00 0 0 0 PNP0C0D:00 0 0 0 0 00 0 0 0 PNP0C0C:00 0 0 0 0 00 0 0 0 PNP0A08:00 0 0 0 0 00 0 0 0 device:55 0 0 0 0 00 0 0 0 device:06 1 1 0 0 00 0 174207 0 device:02 0 0 0 0 00 0 0 0 device:1d 0 0 0 0 00 0 0 0 device:1c 0 0 0 0 00 0 0 0 device:33 0 0 0 0 00 0 0 0 device:1b 0 0 0 0 00 0 0 0 0000:00:1c.4 0 0 0 0 00 0 0 0 device:54 0 0 0 0 00 0 0 0 0000:00:1c.0 0 0 0 0 00 0 0 0 device:4c 0 0 0 0 00 0 0 0 device:8e 0 0 0 0 00 0 0 0 device:38 0 0 0 0 00 0 0 0 device:35 0 0 0 0 00 0 0 0 device:4b 0 0 0 0 00 0 0 0 device:1e 0 0 0 0 00 0 0 0 device:98 0 0 0 0 00 0 0 0 device:91 0 0 0 0 00 0 0 0 device:1a 0 0 0 0 00 0 0 0 0000:00:07.0 0 0 0 0 00 0 0 0 device:9a 0 0 0 0 00 0 0 0 0000:00:06.2 0 0 0 0 00 0 0 0 device:05 0 0 0 0 00 0 0 0 0000:00:06.0 0 0 0 0 00 0 0 0 device:01 0 0 0 0 00 0 0 0 device:18 0 0 0 0 00 0 0 0 LNXVIDEO:00 0 0 0 0 00 0 0 0 device:00 0 0 0 0 00 0 0 0 deleted 0 0 0 0 00 0 0 0

Wake-up Type: Power Switch

Device S-state Status Sysfs node PEG0 S4 *enabled pci:0000:00:06.0 PEGP S4 *disabled pci:0000:01:00.0 PEG1 S4 *disabled PEGP S4 *disabled PEG2 S4 *enabled pci:0000:00:06.2 PEGP S4 *disabled pci:0000:02:00.0 GLAN S4 *enabled pci:0000:00:1f.6 XHCI S4 *enabled pci:0000:00:14.0 XDCI S4 *disabled HDAS S4 *disabled pci:0000:00:1f.3 CNVW S4 *disabled pci:0000:00:14.3 RP01 S4 *enabled pci:0000:00:1c.0 PXSX S4 *disabled RP02 S4 *disabled PXSX S4 *disabled PXSX S4 *disabled RP04 S4 *disabled PXSX S4 *disabled RP05 S4 *enabled pci:0000:00:1c.4 PXSX S4 *disabled pci:0000:45:00.0 RP06 S4 *disabled PXSX S4 *disabled RP07 S4 *disabled PXSX S4 *disabled RP08 S4 *disabled PXSX S4 *disabled RP09 S4 *disabled PXSX S4 *disabled RP10 S4 *disabled PXSX S4 *disabled RP11 S4 *disabled PXSX S4 *disabled RP12 S4 *disabled PXSX S4 *disabled RP13 S4 *disabled PXSX S4 *disabled RP14 S4 *disabled PXSX S4 *disabled RP15 S4 *disabled PXSX S4 *disabled RP16 S4 *disabled PXSX S4 *disabled RP17 S4 *disabled PXSX S4 *disabled RP18 S4 *disabled PXSX S4 *disabled RP19 S4 *disabled PXSX S4 *disabled RP20 S4 *disabled PXSX S4 *disabled RP21 S4 *disabled PXSX S4 *disabled RP22 S4 *disabled PXSX S4 *disabled RP23 S4 *disabled PXSX S4 *disabled RP24 S4 *disabled PXSX S4 *disabled TXHC S4 *enabled pci:0000:00:0d.0 TDM0 S4 *enabled pci:0000:00:0d.2 TDM1 S4 *disabled TRP0 S4 *enabled pci:0000:00:07.0 PXSX S4 *disabled TRP1 S4 *disabled PXSX S4 *disabled TRP2 S4 *disabled PXSX S4 *disabled TRP3 S4 *disabled PXSX S4 *disabled AWAC S4 *enabled platform:ACPI000E:00 PWRB S4 *enabled platform:PNP0C0C:00 LID0 S3 *enabled platform:PNP0C0D:00


rogbuntu@rogbuntu-thinkbook:~$ sudo dmesg | tail -n 200 
[47923.909989] OOM killer disabled.
[47923.909993] Freezing remaining freezable tasks
[47923.911482] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[47923.911489] printk: Suspending console(s) (use no_console_suspend to debug)
[47923.979779] e1000e: EEE TX LPI TIMER: 00000011
[47924.443767] ACPI: EC: interrupt blocked
[47924.518796] ACPI: EC: interrupt unblocked
[47924.710867] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
[47924.710879] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[47924.728586] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[47924.729214] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[47924.729219] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[47924.729685] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[47924.808371] nvme nvme0: D3 entry latency set to 10 seconds
[47924.840891] nvme nvme1: 12/0/0 default/read/poll queues
[47924.845187] nvme nvme0: 12/0/0 default/read/poll queues
[47925.443358] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[47925.444030] OOM killer enabled.
[47925.444036] Restarting tasks: Starting
[47925.444561] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[47925.447588] Restarting tasks: Done
[47925.447632] random: crng reseeded on system resumption
[47925.467045] PM: suspend exit
[47925.583099] e1000e 0000:00:1f.6 eno0: NIC Link is Down
[47925.949931] iwlwifi 0000:00:14.3: WFPM_UMAC_PD_NOTIFICATION: 0x20
[47925.949981] iwlwifi 0000:00:14.3: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
[47925.949992] iwlwifi 0000:00:14.3: WFPM_AUTH_KEY_0: 0x90
[47925.950002] iwlwifi 0000:00:14.3: CNVI_SCU_SEQ_DATA_DW9: 0x0
[47925.951446] iwlwifi 0000:00:14.3: RFIm is deactivated, reason = 4
[47928.695050] wlp0s20f3: authenticate with 32:23:03:6e:fc:f9 (local address=04:f0:ee:eb:9e:25)
[47928.696196] wlp0s20f3: send auth to 32:23:03:6e:fc:f9 (try 1/3)
[47928.743776] wlp0s20f3: authenticated
[47928.744724] wlp0s20f3: associate with 32:23:03:6e:fc:f9 (try 1/3)
[47928.747853] wlp0s20f3: RX AssocResp from 32:23:03:6e:fc:f9 (capab=0x11 status=0 aid=1)
[47928.760576] wlp0s20f3: associated
[47953.920154] wlp0s20f3: deauthenticating from 32:23:03:6e:fc:f9 by local choice (Reason: 3=DEAUTH_LEAVING)
[47954.264437] PM: suspend entry (s2idle)
[47954.271883] Filesystems sync: 0.007 seconds
[47954.394080] Freezing user space processes
[47954.397975] Freezing user space processes completed (elapsed 0.003 seconds)
[47954.397991] OOM killer disabled.
[47954.397994] Freezing remaining freezable tasks
[47954.399564] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[47954.399577] printk: Suspending console(s) (use no_console_suspend to debug)
[47954.467735] e1000e: EEE TX LPI TIMER: 00000011
[47954.931907] ACPI: EC: interrupt blocked
[47954.988618] ACPI: EC: interrupt unblocked
[47955.176036] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
[47955.176057] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[47955.194251] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[47955.194930] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[47955.194938] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[47955.195453] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[47955.343451] nvme nvme0: D3 entry latency set to 10 seconds
[47955.376035] nvme nvme1: 12/0/0 default/read/poll queues
[47955.379858] nvme nvme0: 12/0/0 default/read/poll queues
[47955.864919] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[47955.865515] OOM killer enabled.
[47955.865520] Restarting tasks: Starting
[47955.866195] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[47955.868716] Restarting tasks: Done
[47955.868761] random: crng reseeded on system resumption
[47955.886107] PM: suspend exit
[47956.000196] e1000e 0000:00:1f.6 eno0: NIC Link is Down
[47956.365393] iwlwifi 0000:00:14.3: WFPM_UMAC_PD_NOTIFICATION: 0x20
[47956.365459] iwlwifi 0000:00:14.3: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
[47956.365514] iwlwifi 0000:00:14.3: WFPM_AUTH_KEY_0: 0x90
[47956.365568] iwlwifi 0000:00:14.3: CNVI_SCU_SEQ_DATA_DW9: 0x0
[47956.366611] iwlwifi 0000:00:14.3: RFIm is deactivated, reason = 4
[47959.105897] wlp0s20f3: authenticate with 32:23:03:6e:fc:f9 (local address=04:f0:ee:eb:9e:25)
[47959.106971] wlp0s20f3: send auth to 32:23:03:6e:fc:f9 (try 1/3)
[47959.154156] wlp0s20f3: authenticated
[47959.154702] wlp0s20f3: associate with 32:23:03:6e:fc:f9 (try 1/3)
[47959.157897] wlp0s20f3: RX AssocResp from 32:23:03:6e:fc:f9 (capab=0x11 status=0 aid=1)
[47959.169280] wlp0s20f3: associated
[47984.423474] wlp0s20f3: deauthenticating from 32:23:03:6e:fc:f9 by local choice (Reason: 3=DEAUTH_LEAVING)
[47984.792568] PM: suspend entry (s2idle)
[47984.805306] Filesystems sync: 0.012 seconds
[47984.921740] Freezing user space processes
[47984.925929] Freezing user space processes completed (elapsed 0.004 seconds)
[47984.925944] OOM killer disabled.
[47984.925947] Freezing remaining freezable tasks
[47984.927426] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[47984.927433] printk: Suspending console(s) (use no_console_suspend to debug)
[47984.995104] e1000e: EEE TX LPI TIMER: 00000011
[47985.444440] ACPI: EC: interrupt blocked
[47985.520908] ACPI: EC: interrupt unblocked
[47985.707107] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
[47985.707121] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[47985.724612] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[47985.725302] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[47985.725309] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[47985.725831] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[47985.862462] nvme nvme0: D3 entry latency set to 10 seconds
[47985.890674] nvme nvme1: 12/0/0 default/read/poll queues
[47985.898299] nvme nvme0: 12/0/0 default/read/poll queues
[47986.439952] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[47986.440338] OOM killer enabled.
[47986.440342] Restarting tasks: Starting
[47986.441108] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[47986.442791] Restarting tasks: Done
[47986.442840] random: crng reseeded on system resumption
[47986.458078] PM: suspend exit
[47986.572178] e1000e 0000:00:1f.6 eno0: NIC Link is Down
[47986.933813] iwlwifi 0000:00:14.3: WFPM_UMAC_PD_NOTIFICATION: 0x20
[47986.933860] iwlwifi 0000:00:14.3: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
[47986.933913] iwlwifi 0000:00:14.3: WFPM_AUTH_KEY_0: 0x90
[47986.933966] iwlwifi 0000:00:14.3: CNVI_SCU_SEQ_DATA_DW9: 0x0
[47986.934936] iwlwifi 0000:00:14.3: RFIm is deactivated, reason = 4
[47989.929359] wlp0s20f3: authenticate with 32:23:03:6e:fc:f9 (local address=04:f0:ee:eb:9e:25)
[47989.930527] wlp0s20f3: send auth to 32:23:03:6e:fc:f9 (try 1/3)
[47989.977919] wlp0s20f3: authenticated
[47989.978750] wlp0s20f3: associate with 32:23:03:6e:fc:f9 (try 1/3)
[47989.981879] wlp0s20f3: RX AssocResp from 32:23:03:6e:fc:f9 (capab=0x11 status=0 aid=1)
[47989.992931] wlp0s20f3: associated
[48014.924582] wlp0s20f3: deauthenticating from 32:23:03:6e:fc:f9 by local choice (Reason: 3=DEAUTH_LEAVING)
[48015.273199] PM: suspend entry (s2idle)
[48015.283621] Filesystems sync: 0.010 seconds
[48015.402847] Freezing user space processes
[48015.406655] Freezing user space processes completed (elapsed 0.003 seconds)
[48015.406666] OOM killer disabled.
[48015.406669] Freezing remaining freezable tasks
[48015.408010] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[48015.408018] printk: Suspending console(s) (use no_console_suspend to debug)
[48015.473768] e1000e: EEE TX LPI TIMER: 00000011
[48016.063623] ACPI: EC: interrupt blocked
[48016.134650] ACPI: EC: interrupt unblocked
[48016.322260] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
[48016.322273] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[48016.339739] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[48016.341426] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[48016.341431] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[48016.342012] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[48016.481754] nvme nvme0: D3 entry latency set to 10 seconds
[48016.510489] nvme nvme1: 12/0/0 default/read/poll queues
[48016.522334] nvme nvme0: 12/0/0 default/read/poll queues
[48017.007580] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[48017.008163] OOM killer enabled.
[48017.008167] Restarting tasks: Starting
[48017.008692] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[48017.011205] Restarting tasks: Done
[48017.011241] random: crng reseeded on system resumption
[48017.028570] PM: suspend exit
[48017.142282] e1000e 0000:00:1f.6 eno0: NIC Link is Down
[48017.503023] iwlwifi 0000:00:14.3: WFPM_UMAC_PD_NOTIFICATION: 0x20
[48017.503071] iwlwifi 0000:00:14.3: WFPM_LMAC2_PD_NOTIFICATION: 0x1f
[48017.503122] iwlwifi 0000:00:14.3: WFPM_AUTH_KEY_0: 0x90
[48017.503176] iwlwifi 0000:00:14.3: CNVI_SCU_SEQ_DATA_DW9: 0x0
[48017.504210] iwlwifi 0000:00:14.3: RFIm is deactivated, reason = 4
[48020.245921] wlp0s20f3: authenticate with 32:23:03:6e:fc:f9 (local address=04:f0:ee:eb:9e:25)
[48020.247032] wlp0s20f3: send auth to 32:23:03:6e:fc:f9 (try 1/3)
[48020.294458] wlp0s20f3: authenticated
[48020.295832] wlp0s20f3: associate with 32:23:03:6e:fc:f9 (try 1/3)
[48020.298911] wlp0s20f3: RX AssocResp from 32:23:03:6e:fc:f9 (capab=0x11 status=0 aid=1)
[48020.310244] wlp0s20f3: associated
[48048.446184] warning: `ThreadPoolForeg' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211
[48068.921782] audit: type=1326 audit(1777934056.413:205): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.whatsie.whatsie pid=144169 comm="whatsie" exe="/snap/whatsie/185/usr/bin/whatsie" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7328b7d016f1 code=0x50000
[48068.927985] audit: type=1326 audit(1777934056.419:206): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.whatsie.whatsie pid=144169 comm="whatsie" exe="/snap/whatsie/185/usr/bin/whatsie" sig=0 arch=c000003e syscall=203 compat=0 ip=0x7328b7d016f1 code=0x50000
[48069.883806] audit: type=1326 audit(1777934057.375:207): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.whatsie.whatsie pid=144401 comm="QtWebEngineProc" exe="/snap/whatsie/185/kf6/usr/lib/qt6/libexec/QtWebEngineProcess" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7786ead5132b code=0x50000
[48069.884389] audit: type=1326 audit(1777934057.375:208): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.whatsie.whatsie pid=144402 comm="QtWebEngineProc" exe="/snap/whatsie/185/kf6/usr/lib/qt6/libexec/QtWebEngineProcess" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7d3a6270232b code=0x50000
[48070.221758] audit: type=1400 audit(1777934057.712:209): apparmor="DENIED" operation="ptrace" class="ptrace" profile="snap.whatsie.whatsie" pid=144169 comm="whatsie" requested_mask="read" denied_mask="read" peer="unconfined"
[48422.005791] perf: interrupt took too long (2533 > 2500), lowering kernel.perf_event_max_sample_rate to 78000
[49653.906894] i915 0000:00:02.0: Using 39-bit DMA addresses
[49820.994369] perf: interrupt took too long (3179 > 3166), lowering kernel.perf_event_max_sample_rate to 62000
[52342.488723] perf: interrupt took too long (4046 > 3973), lowering kernel.perf_event_max_sample_rate to 49000
[52394.841347] PM: suspend entry (s2idle)
[52394.842408] Filesystems sync: 0.001 seconds
[52394.864687] Freezing user space processes
[52394.870277] Freezing user space processes completed (elapsed 0.005 seconds)
[52394.870291] OOM killer disabled.
[52394.870294] Freezing remaining freezable tasks
[52394.872340] Freezing remaining freezable tasks completed (elapsed 0.002 seconds)
[52394.872352] printk: Suspending console(s) (use no_console_suspend to debug)
[52394.933630] wlp0s20f3: deauthenticating from 32:23:03:6e:fc:f9 by local choice (Reason: 3=DEAUTH_LEAVING)
[52394.941340] e1000e: EEE TX LPI TIMER: 00000011
[52395.698016] ACPI: EC: interrupt blocked
[52395.775363] ACPI: EC: interrupt unblocked
[52395.960230] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/adlp_guc_70.bin version 70.36.0
[52395.960241] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/tgl_huc.bin version 7.9.3
[52395.977547] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[52395.980255] i915 0000:00:02.0: [drm] GT0: GUC: submission enabled
[52395.980279] i915 0000:00:02.0: [drm] GT0: GUC: SLPC enabled
[52395.980761] i915 0000:00:02.0: [drm] GT0: GUC: RC enabled
[52396.053294] nvme nvme0: D3 entry latency set to 10 seconds
[52396.085247] nvme nvme1: 12/0/0 default/read/poll queues
[52396.093635] nvme nvme0: 12/0/0 default/read/poll queues
[52396.691044] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[52396.691600] OOM killer enabled.
[52396.691622] Restarting tasks: Starting
[52396.692377] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[52396.697283] Restarting tasks: Done
[52396.697348] random: crng reseeded on system resumption
[52396.727140] PM: suspend exit
[52396.866032] wlp0s20f3: authenticate with b8:be:f4:8b:07:85 (local address=04:f0:ee:eb:9e:25)
[52396.866977] wlp0s20f3: send auth to b8:be:f4:8b:07:85 (try 1/3)
[52396.912499] wlp0s20f3: authenticated
[52396.913679] wlp0s20f3: associate with b8:be:f4:8b:07:85 (try 1/3)
[52396.924142] wlp0s20f3: RX AssocResp from b8:be:f4:8b:07:85 (capab=0x1511 status=0 aid=1)
[52396.932746] wlp0s20f3: associated
[52396.942478] wlp0s20f3: Limiting TX power to 20 (23 - 3) dBm as advertised by b8:be:f4:8b:07:85
"kvm_amd CPU x isn't AMD or Hygon" at boot https://askubuntu.com/questions/1564432/kvm-amd-cpu-x-isnt-amd-or-hygon-at-boot

kvm_amd CPU x isn't AMD or Hygon?

This text appear early in the boot sequence.

Now this is not really causing any trouble, RIGHT NOW.
But I consider all similar messages to be a potential hazard to the stability of my machine.
Therefore I quite fiercely hunt them down, and "swat them out".
The more of these unwanted messages you have the greater potential for strange interference and malfunction.

These are apparently about virtualbox:
https://unix.stackexchange.com/questions/798132/why-and-how-were-kvm-modules-unexpectedly-enabled-in-ubuntu-24-04
KVM not supported shown in terminal while it is enabled

... but I have this on intel-based hardware,
an oldish i7-9750H-based Asus G731 laptop, with embedded GTX 1660 Ti.
NOTE: 6 cores+HT, so message does not appear for ALL cores(!?)
Virtualbox 7.2(?) IS installed though, but quite seldom used.

I have:
GRUB_CMDLINE_LINUX_DEFAULT= ... kvm.enable_virt_at_load=0
in /etc/default/grub

No go.


Another attempt to fix it:
$ sudo -i
# cat >/etc/modprobe.d/kvm.conf
blacklist kvm
blacklist kvm-amd
blacklist kvm-intel

CTRl+D

# update-initramfs -u -k all
update-initramfs: Generating /boot/initrd.img-6.17.0-14-generic
...
# 

CTRl+D again

Reboot... I still get a black screen with these boot messages:

[    6.359851]
[   10.531179] kvm_amd: CPU 4 isn't AMD or Hygon
[   11.104935] kvm_amd: CPU 6 isn't AMD or Hygon
[   11.193682] kvm_amd: CPU 9 isn't AMD or Hygon
_

Does anyone have any more ideas on how to actually get rid of this?

Kernel 6.17 failing on Raspberry Pi 4? https://askubuntu.com/questions/1562527/kernel-6-17-failing-on-raspberry-pi-4

I just upgraded my Raspberry Pi 4 to the 25.10 release, and it won't boot kernel 6.17, only the 6.14 kernel from 25.04. When I log in, I get:

piboot-try:
New boot assets in /boot/firmware/new failed. Fallen back to known good
state. Use piboot-try --reset-new to re-test boot assets. If you are able
to determine the boot failure is due to a bug, please file an issue:
ubuntu-bug flash-kernel

uname -r says it's running kernel 6.14.0-1019-raspi.

I've followed the advice in the message, but it still uses 6.14. I've looked through various logs, but I don't see anything that says what the error might be.

How can I find out what's going wrong with 6.17, and ideally how can I get the new kernel booting?

Can I run Ubuntu with Secure Boot enabled? https://askubuntu.com/questions/1531175/can-i-run-ubuntu-with-secure-boot-enabled

I'm a Windows 11 user and I want to dual boot Ubuntu. I'm not sure if I can boot from an Ubuntu installer USB/run the ISO with Secure Boot enabled. I have not run the ISO or booted it up yet.

Server refused our key - No supported authentication methods available (server sent: publickey) - Permission denied (publickey): Ubuntu server https://askubuntu.com/questions/1482132/server-refused-our-key-no-supported-authentication-methods-available-server-s

I have an AWS EC2 instance running. I was able to connect using my chomed (-r--------) keys using MobaXTerm and SSH (Ubuntu for Windows) (.pem key) and putty (.ppk key). I'm also working on the server using a IDL (Rstudio server), so the instance is running. At some point I couldn't connect again using Moba+Ssh+Putty, without making any change in keys or internal config commands on the instance.

These are the connection errors I got from those software (again, changing anyhong):

  • MobaXterm: Server refused our key --- No supported authentication methods available (server sent: publickey)
  • Putty: Server refused our key --- No supported authentication methods available (server sent: publickey)
  • ssh: Permission denied (publickey).

I saw some posts but they require to be connected to the server in order to modify files/permissions from inside. I can access some system files with the IDL (Rstudio) but as a particular user, not root.

Any ideas?

EDIT: Following @Jos suggestion, I used the -vv parameter. Here the answer

`

~$: ssh -vv -i "key.pem" ubuntu@ec2-ip.us-east-2.compute.amazonaws.com
OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f  31 Mar 2020
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug2: resolving "ec2-ip.us-east-2.compute.amazonaws.com" port 22
debug2: ssh_connect_direct
debug1: Connecting to ec2-ip.us-east-2.compute.amazonaws.com [ip] port 22.
debug1: Connection established.
debug1: identity file key.pem type -1
debug1: identity file key.pem-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_8.9p1 Ubuntu-3ubuntu0.3
debug1: match: OpenSSH_8.9p1 Ubuntu-3ubuntu0.3 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to ec2-ip.us-east-2.compute.amazonaws.com:22 as 'ubuntu'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c
debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,ssh-ed25519,sk-ssh-ed25519@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,sntrup761x25519-sha512@openssh.com,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256
debug2: host key algorithms: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:5dFj4Av5Ln0oYtTRBYdcFKPe3hlTb5Fr9Q4Iok056UM
debug1: Host 'ec2-ip.us-east-2.compute.amazonaws.com' is known and matches the ECDSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:7
debug2: set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: key.pem  explicit
debug2: pubkey_prepare: done
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
debug1: kex_input_ext_info: publickey-hostbound@openssh.com (unrecognised)
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: key.pem
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
ubuntu@ec2-ip.us-east-2.compute.amazonaws.com: Permission denied (publickey).`
can't find directory and file created with ubuntu https://askubuntu.com/questions/1245859/cant-find-directory-and-file-created-with-ubuntu

So I downloaded ubunto to start working with command line. It seems ubuntu created a directory that it named my username in my desktop (as discovered via pwd). I since created a file called colors.txt file using nano just for some practice. Using the ls command confirmed I created colors.txt.

However, I cannot find a folder that is called my username, or the file called colors.text anywhere on my computer. Is this normal? Where could this directory and colors.txt be?

Any app on Ubuntu to open and/or convert HEIF pictures (.HEIC, High Efficiency Image File Format)? https://askubuntu.com/questions/958355/any-app-on-ubuntu-to-open-and-or-convert-heif-pictures-heic-high-efficiency-i

A certain cellphone maker has changed the default format of taking pictures to HEIF (.HEIC, High Efficiency Image File Format), without asking the users (although there is still the option to use jpeg/jpg).

Is there an app/program on Ubuntu that can open and/or convert HEIF-pictures and even let them be edited?

When I try to install nginx-common with apt-get --reinstall install nginx-common, I get this: https://askubuntu.com/questions/739965/when-i-try-to-install-nginx-common-with-apt-get-reinstall-install-nginx-common

root@vpsirham:~# apt-get --reinstall install nginx-common
        Reading package lists... Done Building dependency tree Reading state
        information... Done Suggested packages:   fcgiwrap nginx-doc The
        following NEW packages will be installed:   nginx-common 0 upgraded,
        1 newly installed, 0 to remove and 0 not upgraded. Need to get 0
        B/18.3 kB of archives. After this operation, 220 kB of additional
        disk space will be used. (Reading database ... 45660 files and
        directories currently installed.) Preparing to unpack
        .../nginx-common_1.4.6-1ubuntu3.4_all.deb ... Unpacking nginx-common
        (1.4.6-1ubuntu3.4) ... dpkg: error processing archive
        /var/cache/apt/archives/nginx-common_1.4.6-1ubuntu3.4_all.deb
        (--unpack):  trying to overwrite '/etc/logrotate.d/nginx', which is
        also in package nginx 1.8.1-1~trusty Errors were encountered while
        processing: 
        /var/cache/apt/archives/nginx-common_1.4.6-1ubuntu3.4_all.deb E:
        Sub-process /usr/bin/dpkg returned an error code (1)</blink>
How to get lock screen option in Lubuntu? https://askubuntu.com/questions/178565/how-to-get-lock-screen-option-in-lubuntu

I am using Ubuntu 12.04 with many DE. Lubuntu is one of them. I don't have any option to lock screen in Lubuntu while I do in Unity and other DE.

Is there any program / application that I can install in order to lock screen in Lubuntu?