This is a weird problem. I have two Ubuntu servers. One, running Ubuntu 25.10, is fine, no issues, the other one runs Ubuntu 24.04.4 and is the host for my Apache webserver and postfix email server.

After the last NetworkManager update last week, the use of network aliases no longer work for Ubuntu 24.04.4 server.

For instance if I want to connect to my webserver, www.abcvde.net that resides on the 24.04.4 server, I get a "Destination Host Unreachable." Nor can I use the IP address (192.168.0.22), it times out. However, if I use the localhost alias or its IP, it works. Using the server's own IP, 192.168.0.11 fails as unreachable.

Pinging the alias name, BBB fails, as does pinging its IP. However, I can ping other PCs/servers in my home network using either IP address or the alias.

What is more puzzling, since this occurred at the same time, I'm no longer receiving emails. I believe there's a connection but don't see how. I only have one server set up as a email server (postfix) so I can't just redirect the incoming email packets to another server. Outbound emails work, no issue. Email app is Thunderbird.

I also checked to see that the firewall is off. I'm behind two other firewalls and a NAT. A firewall isn't needed. The router is TP-Link.

Thoughts? Ideas?

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:

Crash Logs:

amd_match snd_soc_acp1_amd_sdca_quirks snd_amd_sdw_acpi soundwire and amdgpu
soundwire_generic_allocation soundwire_bus snd_soc_sdca btusb uvcvideo
btmtk videobuf2_vmalloc btrtl snd_soc_core mt7921e uvcvideo btbcm
videobuf2_memops mt7921_common snd_compress btintel
lenovo_wmi_gamezone videobuf2_v4l2 snd_hda_codec_alc269
mt792x_lib ac97_bus snd_hda_codec_realtek snd_pcm_dmaengine bluetooth
videobuf2_common mt76_connac_lib snd_hda_codec_nvhdmi
snd_hda_scodec_component snd_hda_codec_atihdmi lenovo_wmi_helpers
snd_hda_codec_generic lenovo_wmi_events snd_rpl_pci_acp6x
snd_hda_codec_hdmi amdxcp snd_acp_pci drm_panel_backlight_quirks
videodev firmware_attributes_class mt76 gpu_sched
snd_amd_acp_mach snd_ctl_led snd_hda_intel
lenovo_wmi_hotkey_utilities wmi_bmof
nvidia_wmi_ec_backlight snd_acp_legacy_common drm_buddy
snd_rawmidi snd_pci_acp6x drm_exec snd_hda_codec
snd_seq_midi_event snd_pci_acp5x drm_suballoc_helper
mac80211 snd_hda_core snd_rawmidi snd_rn_pci_acp
snd_intel_dspcfg drm_display_helper snd_acp_config
snd_intel_sdw_acpi snd_hwdep snd_soc_acpi snd_seq cec
i2c_piix4 rc_core k10temp snd_pci_acp3x i2c_smbus
snd_pcm i2c_algo_bit snd_seq_device snd_timer
libarc4 snd ideapad_laptop drm_ttm_helper
sparse_keymap platform_profile ttm soundcore joydev amd_pmc

30.159911] input_leds mac_hid sch_fq_codel br_netfilter bridge
ip6table_filter iptable_filter lp parport_pc ppdev stp ip_tables
arp_tables x_tables overlay llc parport msr xtables
efi_pstore nfnetlink dmi_sysfs autofs4 usbhid hid_multitouch
typec_ucsi hid_generic nvme typec video i2c_hid_acpi
nvme_core i2c_hid hid nvme_keyring r8169 nvme_auth
realtek wmi

30.160020] ---[ end trace 0000000000000000 ]---

30.863939] console: switching to colour frame buffer device 160x50

32.469875] RIP: 0010:_jump_label_patch.cold+0x24/0x26

32.469989] Code:
f8 e9 44 f7 19 08 48 c7 c3 b8 89 c5 89 41 56 45 89 e1
49 89 d8 4c 89 e9 4c 89 ea 4c 89 ee 48 c7 c7
58 0e 6d 88 e8 64 90 01 00 <0f> 0b eb b6
fe 48 c7 c7 20 02 25 89 e8 45 f7 e8 10 9f bc ee

32.463949] RSP: 0018:ffffd23a44a8fafe EFLAGS: 00010246

32.463967] RAX: 00000000000000a8
RBX: ffffffff880068ca
RCX: 0000000000000000

32.463987] RDX: 0000000000000000
RSI: 0000000000000000
RDI: 0000000000000000

32.464011] RBP: ffffd23a44a8fb20
R08: 0000000000000000
R09: 0000000000000000

32.464034] R10: 0000000000000060
R11: 0000000000000000
R12: 0000000000000005

32.464055] R13: ffffffffc3ea29ae
R14: 0008000000008801
R15: 0000000800900000

32.464078] FS: 00007f4c88ae3c80(0000)
GS:ffff8cc104700800(0000)
knlGS:0000000000000000

32.464162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

32.464119] CR2: 000072bb60fe5000
CR3: 000000014e96e000
CR4: 0000000000f50efe

32.464140] PKRU: 55555554

32.486541] Generic FE-GE Realtek PHY r8169-0-200:00:
attached PHY driver (mii_bus:phy_addr=r8169-0-200:00, irq=MAC)

32.647654] r8169 0000:02:00.0 enp2s0: Link is Down

33.073826] nvidia-modeset:
nvidia-modeset: ACPI reported no NVIDIA native backlight available;
attempting to use ACPI backlight.

I am using the following command trying to install the driver

bash linux-brprinter-installer-2.2.6-0.gz 

for the Brother MFC-J450DW printer. When executing the command, I get the following response

Cannot execute binary file.

I am just following the directions noted in ask Ubuntu.
What am I doing wrong?
I looked at the Brother website and their directions are the same as on AskUbuntu.

I updated my system from 24.04 LTS to 26.04 LTS. I wanted just to update, not upgrade the ubuntu version. Don't ask ... I was very stressed and copied some commands without thinking about. Stupid - I know.

My problem is, each time I try to "sudo apt upgrade" I get this error:

$ sudo apt upgrade
Zusammenfassung:                                    
  Aktualisiere: 0, Installiere: 0, Entferne: 0, Aktualisiere nicht: 0
  2 nicht vollständig installiert oder entfernt.
  Benötigter Platz: 0 B / 129 GB verfügbar

Fortfahren? [J/n] J
linux-headers-7.0.0-15-generic (7.0.0-15.15) wird eingerichtet ...
/etc/kernel/header_postinst.d/dkms:
Sign command: /usr/bin/kmodsign
Signing key: /var/lib/shim-signed/mok/MOK.priv
Public certificate (MOK): /var/lib/shim-signed/mok/MOK.der

Autoinstall of module evdi/1.14.4 for kernel 7.0.0-15-generic (x86_64)
Building module(s)...(bad exit status: 2)
Failed command:
make -j8 KERNELRELEASE=7.0.0-15-generic all INCLUDEDIR=/lib/modules/7.0.0-15-generic/build/include KVERSION=7.0.0-15-generic DKMS_BUILD=1
/usr/share/apport/package-hooks/dkms_packages.py:101: DeprecationWarning: apport.fatal() is deprecated. Please use apport.logging.fatal() directly instead.
  apport.fatal('Cannot create report: ' + str(e))
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/evdi.0.crash'

Error! Bad return status for module build on kernel: 7.0.0-15-generic (x86_64)
Consult /var/lib/dkms/evdi/1.14.4/build/make.log for more information.

Autoinstall on 7.0.0-15-generic succeeded for module(s) virtualbox.
Autoinstall on 7.0.0-15-generic failed for module(s) evdi(10).

Error! One or more modules failed to install during autoinstall.
Refer to previous errors for more information.
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 1
dpkg: Fehler beim Bearbeiten des Paketes linux-headers-7.0.0-15-generic (--configure):
 »altes postinst-Betreuerskript des Paketes linux-headers-7.0.0-15-generic«-Unterprozess mit Exit-Status 1 fehlgeschlagen
dpkg: Abhängigkeitsprobleme verhindern Konfiguration von linux-headers-generic:
 linux-headers-generic hängt ab von linux-headers-7.0.0-15-generic; aber:
  Paket linux-headers-7.0.0-15-generic ist noch nicht konfiguriert.

dpkg: Fehler beim Bearbeiten des Paketes linux-headers-generic (--configure):
 Abhängigkeitsprobleme - verbleibt unkonfiguriert
Es wurde kein Apport-Bericht verfasst, da die Fehlermeldung darauf hindeutet, dass dies lediglich ein Folgefehler eines vorherigen Problems ist.
                                                                                                                                                Fehler traten auf beim Bearbeiten von:
 linux-headers-7.0.0-15-generic
 linux-headers-generic
Fehler: Sub-process /usr/bin/dpkg returned an error code (1)

How can I solve this? The problem is, I cannot update anything, because this error blocks also updating other packages or installing other software.

Regards!

I've been on Ubuntu 26.04 for a bit now and Kate worked until very recently-at most a month ago-and then started failing with snap/kate/218/usr/bin/kate: error while loading shared libraries: libX11.so.6: cannot open shared object file: no such file or directory

I tried installing said library, it said it was already installed. I tried reinstalling Ubuntu, entirely wiping the disk and using the latest image. No dice.

Starting Point I'm new to Linux (about 6 weeks) and have been testing multiple versions of Linux on my NUC which resulted with an SDD with three OS partitions. The sequence of installation was:

1. Windows 10
2. Ubuntu 
3. Winux

My goal: To remove Winux from the boot list as I migrate away from Windows and embrace Ubuntu.

My Situation: I've read other posts about multiple OS's and the removal of 1, but nothing seemed to match what I have unwittingly created.

In the PC's Intel Bios, there are only two entries:

Windows Boot Manager
Winux 11

From Ubuntu using efibootmanager I have the following entries:

BootCurrent: 0001
BootOrder: 0001,0000,0002,0003
0000  Windows Boot manager
0001  Winux 11

When I select Winux 11 from the first boot list presented, I see a completely different list of boot options:

Winux 11 GNU/Linux
Advanced Options for Winux 11 GNU/Linux
Memory test (memtest86+x64.efi)
Memory test (memtest86+x64.efi, serial console)
Windows Boot Manager (on /dev/nvme0n1p1)
Ubuntu 24.04.4 LTS (24.04) (on /dev/nvme0n1p7)
Advanced options for Ubuntu 24..04.4 LTS (24.04) 
UEFI Firmware Settings

Now to add more confusion ... from Ubuntu when I list it's boot list:

awk -F\' '/menuentry / {print i++, $2}' /boot/grub/grub.cfg

I get yet another different boot list:

0 Ubuntu
1 Ubuntu, with Linux 6.17.0-23-generic
2 Ubuntu, with Linux 6.17.0-23-generic (recovery mode)
3 Ubuntu, with Linux 6.17.0-19-generic
4 Ubuntu, with Linux 6.17.0-19-generic (recovery mode)
5 memtest86+
6 Memory test (memtest86+x64.efi, serial console)
7 Windows Boot Manager (on /dev/nvme0n1p1)
8 Winux 11 (24.04) (on /dev/nvme0n1p6)
9 Winux 11 GNU/Linux (on /dev/nvme0n1p6)
10 Winux 11 GNU/Linux, with Linux 6.17.0-22-generic (on /dev/nvme0n1p6)
11 Winux 11 GNU/Linux, with Linux 6.17.0-22-generic (recovery mode) (on /dev/nvme0n1p6)
12 Winux 11 GNU/Linux, with Linux 6.17.0-19-generic (on /dev/nvme0n1p6)
13 Winux 11 GNU/Linux, with Linux 6.17.0-19-generic (recovery mode) (on /dev/nvme0n1p6)
14 Memory test (memtest86+x64.efi) (on /dev/nvme0n1p6)
15 Memory test (memtest86+x64.efi, serial console) (on /dev/nvme0n1p6)
16 UEFI Firmware Settings

My Concern: I'm confused with the various boot lists and their differing sequences. So using any of the other articles I've read didn't give me confidence to just "try" one of their methods. I don't feel like I could afford to lose my Windows system just yet ... although EOL is coming for it soon!

Sincerly, I will greatly appreciate any support that could be provided!

Thank you in advance!

First an expression of frustration: After 2 hours fumbling with links withig GitLab and reading many pages and clicking on many links within the Help link for System Monitor, in order to pose a question or suggest a change to the displayed data, I have come to the conclusion that user feedback from users outside the coding bubble is not wanted. If the Admins really wanted "end user feedback" to facilitate a greater adoption of the platform, the channels for user feedback wouldn't be so cumbersome and would be written in plan non-coder, non-bubble language.

Now my question or suggestion for the Gods of the System Monitor:

Since I'm not yet even close to any fluency in using terminal commands to perform operations, I rely on the GUI provided in the App. I would like to suggest that on the main display (?) the positional swapping of Disk Reading and Disk Writing so that Disk Writing is visually under Network Receiving and Disk Reading is visually under Network Sending. This would allow for a simple vertical scan of these, typically related, activities instead of a constant horizontal cross-check.

I am experiencing an issue where the trackpad scroll speed in Brave Browser is extremely fast and sensitive, making it difficult to navigate web pages. Interestingly, scrolling in Firefox works perfectly fine and follows the system settings, but Brave (and other Chromium-based browsers) seems to ignore them.

Is there a way to permanently fix or scale down the scroll multiplier specifically for Brave/Chromium on Ubuntu without affecting the entire system's input settings? I am looking for a solution that persists after browser updates.

I am still getting error messages and distorted screens with https://discourse.ubuntu.com/ and now and then "This site can’t be reached". What is the latest status here? Is the DDOS attack still going on?

I have an even older dedicated Linux machine with a GTX-560 on an old ASUS Maximus IV motherboard with an Intel i7-2700K, and after upgrading to 26.04 it still feeds two monitors just fine. (Might be a clue here?); (I am not a gamer, hence the continued use of the GPUs, they are fine for work.)

On my MSI 399 Pro Carbon, 24 thread AMD, with the 760, I have tried to use the 470 Nvidia driver to no avail, and I went back to the recommended Nouveau. Is there a legacy procedure of any kind or software mod to get two screens again on my best machine?

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. 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.

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

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

Has anyone been successful installing Ubuntu on an Asus z170 Deluxe motherboard? I am new to this operating system, and so far have been unable to install the OS. I boot from a USB PNY 32GB, it boots, get the Ubuntu screen, allow the timer to run down, and then the computer freezes. I must reset the system to restart. Secure Boot is OFF.

I followed troubleshooting steps precisely, but I had no success. I tried every combination of BIOS settings and had failure after failure.

A few weeks ago, I wanted to try Ubuntu for my laptop that is also my main computer. Two days ago, I installed it on an external HDD I had bought for the occasion. My SSD (not external) was still on Windows, and I absolutely want to keep Windows in case I need it.

After using Ubuntu for a while, I realized that despite using USB 3.2, the HDD simply isn't fast enough to keep up with what I'm doing, so today I wanted to swap Windows and Linux from drives, but after spending hours trying to do so, it just won't work, I literally tried resetting Windows hoping it'll let me choose where to download it, but it didn't and after hours of waiting a download, it put itself back on my SSD and I can't put Ubuntu on it at the same time since Windows won't let me create a partition that's bigger than 50GB despite having my SSD 32% used. I thought that I'd try downloading Ubuntu again on the HDD (since I had formatted it earlier to try to put Windows on it) and then use Ubuntu to create a partition, but now that I've installed Ubuntu again and told it specifically to go on the SSD, it somehow managed to put itself on the HDD anyway.

I don't even know what to do anymore at this point. What should I do? I feel like absolutely nothing works correctly when I try to tinker around with OSs.

I had to rebuild my FLASH disk after a rebuild that used Ubuntu Server 24 first (because the DVD no longer contains the full Ubuntu Desktop configuration). Neither logout/login nor full reboot after the described removals works.

The previous successful answer was to rm -Rf ~/.cache/thumbnails/fail

from Ubuntu 24.04 File thumbnails not visible on desktop

That no longer works for me.

I sincerely hope the only workable answer now ISN'T starting from Ubuntu 22.04 and doing an online full system rebuild.

I recently noticed that my scene in a new Unity project was lagging/getting choppy even though it was just a tilemap with a handful (~10) game objects thrown in. Looking in the profiler I found that there was a thread called “Audio PulseAudio Mixer” that seemed to be causing large frame time spikes: from ~5ms to ~125ms. This seemed strange because there is no audio in the game. No audio listener, even. Nothing that I am aware of that could remotely require any activity in an audio thread. I even have "Disable Unity Audio" checked in Project Settings.

I’m on Ubuntu 24.04.4 as a recent Windows refugee, and my (limited) understanding is that ~~PulseAudio was standard before 24.04 when it was replaced with PipeWire.~~ PipeWire is a wrapper for PulseAudio:

pactl info | grep 'Server Name'

returns

Server Name: PulseAudio (on PipeWire 1.0.5)

I have no idea if that means anything.

I am aware that Unity is still a work-in-progress on Ubuntu, but I am very keen to not have to go back to Windows (or head over to Mac).

Many thanks for any help.

(This question is no longer cross-posted on GameDevSE)

Edit: I'm using a Focusrite Scarlett 2i2 (3rd Gen) audio interface, if that's at all relevant.

As the title says. I have Ubuntu 26.04 LTS and the Top Bar icon for Livepatch is missing. I did have to go to /etc/update-manager/release-upgrades to change the prompt to "Prompt=lts" so it can be on LTS (install put it on the standard release cycle for some reason). Livepatch is enabled and the icon is on as well, but none are present. Help me figure this out please.

I have a script I use to allow me to plug in a second keyboard and change what keys are sent when pressed. I use it to send key combinations that execute macros in my audio editing software. It's become a vital part of my workflow. Here is the script:

#!/usr/bin/env python3

import os
from evdev import InputDevice, categorize, ecodes
#dev = InputDevice('/dev/input/event6') # Do not use event numbers for identifying keyboard as they change with reboots.
dev = InputDevice('/dev/input/by-id/usb-CHESEN_USB_Keyboard-event-kbd') # Use IDs for identifying keyboard as they do not change with reboots.
dev.grab()

for event in dev.read_loop():
  if event.type == ecodes.EV_KEY:
    key = categorize(event)
    if key.keystate == key.key_down:
        if key.keycode == 'KEY_ESC':
            os.system("xte 'keydown Control_L' 'keydown KP_0' 'keyup KP_0' 'keyup Control_L'") # Fill TS with 50ms roomtone
        elif key.keycode == 'KEY_F1':
            os.system("xte 'keydown Control_L' 'keydown KP_1' 'keyup KP_1' 'keyup Control_L'") # Fill TS with 100ms roomtone
        elif key.keycode == 'KEY_F2':
            os.system("xte 'keydown Control_L' 'keydown KP_2' 'keyup KP_2' 'keyup Control_L'") # Fill TS with 150ms roomtone

How do I change this script to work with Wayland? As I understand it, it uses things like evdev and xte, not sure what else, which don't work in Wayland.

In looking into this, I've seen reference to an issue with the commands sending multiple keys rather than the lines of the script being for simple substitutions. I don't see anywhere how to deal with this in Wayland.

I'm not a coder by a long shot and no longer remember how this was put together.

In the terminal how do I change the GFX driver Nvidia 580, installed in error, to the Nvidia 535 which is recommended for the Nvidia GeForce RTX 3060. Followed by cleaning up any drivers which have been used in the past?

I can use a tethered connection but there is no option for a wifi connection when I use Ubuntu from a USB.

This week my OS updated a few packages and after the update my nvidia drivers stopped working. I was using nvidia-driver-580-open and tried switching to nvidia-driver-590. The computer still felt laggy so I tried switching back to the 580 drivers but I ran into the following issue

    Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 linux-modules-nvidia-580-open-generic-hwe-24.04 : Depends: linux-modules-nvidia-580-open-6.17.0-23-generic (= 6.17.0-23.23~24.04.1+1) but it is not going to be installed
                                                   Depends: nvidia-kernel-common-580 (>= 580.142) but 580.126.09-0ubuntu0.24.04.2 is to be installed
E: Unable to correct problems, you have held broken packages.

I also tried using

ubuntu-drivers autoinstall

as well as purging, updating and re-installing the drivers.

I am using Ubuntu 24.04 LTS and have a 3060 RTX Mobile

Currently I've tried the 570 and they showed the same issue as the 590, laggy, without smooth transitions in the desktop and couldn't run games. And I've also tried the 535 drivers that led me to have to log in with tty4 to purge them.

When I try to manually install the packages manually

sudo aptitude -f install nvidia-kernel-common-580 
The following NEW packages will be installed:
  nvidia-firmware-580-580.126.09{a} nvidia-kernel-common-580 

I tried looking online and I couldn't find nvidia-kernel-common-580.142 available anywhere

After trying many solutions from Unable to correct problems, you have held broken packages, none of them worked as when I perform the install I do not have any nvidia related packages on my computer.

Currently the only drivers that somehow work are the Xorg drivers and that's what I'm trying to switch from into nvidia drivers.

It seems to me like the packages are still not available but I cannot confirm the issue is on my side

Also my sources list reads as

Types: deb deb-src URIs: http://pt.archive.ubuntu.com/ubuntu/ Suites: noble noble-updates noble-backports Components: main restricted universe multiverse Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg  Types: deb deb-src URIs: http://security.ubuntu.com/ubuntu/ Suites: noble-security Components: main restricted universe multiverse Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg 

I've now tried downgrading the kernel from version 6.17.0-23-generic to 6.17.0-22-generic, running into the same issues as before.

I also tried

sudo apt install ca-certificate
sudo rm -rf /var/lib/apt/lists/*
sudo apt update
sudo apt upgrade
sudo ubuntu-drivers autoinstall

And still got the same error as before

I have a computer running Ubuntu 24.04 LTS desktop where I have QEMU/KVM running. One of the guest OS is Windows 11. This VM has secure-boot on as required by Windows. The secure boot certificates originally issued in 2011 will expire next month. The new certificates were issued in 2023.

The above page shows a table of expiring certificates:

| **Expiring Certificate**                  | **Expiration date** | **New Certificate**                  | **Storing location** | **Purpose**                                          |
| ----------------------------------------- | ------------------- | ------------------------------------ | -------------------- | ---------------------------------------------------- |
| **Microsoft Corporation KEK CA 2011**     | June 2026           | Microsoft Corporation KEK 2K CA 2023 | Stored in KEK        | Signs updates to DB and DBX.                         |
| **Microsoft Windows Production PCA 2011** | Oct 2026            | Windows UEFI CA 2023                 | Stored in DB         | Used for signing the   Windows boot loader.          |
| **Microsoft UEFI CA 2011\***              | June 2026           | Microsoft UEFI CA 2023               | Stored in DB         | Signs third-party boot loaders and EFI applications. |
| **Microsoft UEFI CA 2011\***              | June 2026           | Microsoft Option ROM UEFI CA 2023    | Stored in DB         | Signs third-party option ROMs                        |

It looks like my VM is not using the new certificates. When I check the secure boot status from within Windows guest, it says:

Secure boot is on, but your device is using an older boot trust configuration that should be updated. There is not yet enough data to classify your device for automatic update.

This page says if I see this message then:

Your device might need additional validation before the update can proceed automatically. Visit aka.ms/getsecureboot for more information.

The link takes me back to the original page linked above.

This made me think Windows update failed to work with QEMU's UEFI firmware called OVMF.

The XML tab of the Overview section of the Virtual Machine Manager shows in part:

    <loader readonly="yes" secure="yes" type="pflash">/usr/share/OVMF/OVMF_CODE_4M.ms.fd</loader>
    <nvram template="/usr/share/OVMF/OVMF_VARS_4M.ms.fd">/var/lib/libvirt/qemu/nvram/win11_VARS.fd</nvram>

The files OVMF_CODE_4M.ms.fd and OVMF_VARS_4M.ms.fd have the modified date of December 10, 2025. The file OVMF_CODE_4M.ms.fd is linked to OVMF_CODE_4M.secboot.fd in the folder /usr/share/OVMF/.

I looked at the OMVF UEFI configuration menu and couldn’t find anything regarding the secure boot certificates or anyway to add new ones.

Here is the Windows 11 System log:

Log Name:      System
Source:        Microsoft-Windows-TPM-WMI
Date:          5/6/2026 2:37:16 PM
Event ID:      1801
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      Dev1-Win11
Description:
Updated Secure Boot certificates are available on this device but have not yet been applied to the firmware. 
Review the published guidance to complete the update and maintain full protection. 
This device signature information is included here.
DeviceAttributes: 
BaseBoardManufacturer:;
FirmwareManufacturer:Ubuntu distribution of EDK II;
FirmwareVersion:2024.02-2ubuntu0.8;
OEMModelNumber:Ubuntu 24.04 PC (Q35 + ICH9, 2009);OEMModelBaseBoard:;
OEMModelSystemFamily:;OEMManufacturerName:QEMU;OEMModelSKU:;OSArchitecture:amd64;
BucketId: 2a0656131aa2862c533c820200125d8c3c845a85144dde851c754bc22261465a
BucketConfidenceLevel: No Data Observed - Action Required
UpdateType: 
For more information, please see https://go.microsoft.com/fwlink/?linkid=2301018

My searches have led to some solutions for Red Hat, and Proxmox, but nothing specific to Ubuntu.

From the Linux perspective most solutions refer only to updating to the Microsoft UEFI CA 2023 certificate. I have not seen anything on how or if one should update the three other certificates expiring in 2026 when running Windows in a VM.

Q: How do I make sure that the OMVF is using all the secure boot certificates from 2023 so that Windows 11 works as expected beyond June 2023?

Thanks

installed Kubuntu 26 hoping to resolve a recurring problem when trying to install older Linux versions. I'm using a dual boot setup on an HP Omen with an Nvidia RTX 4070 and an i7 13th gen. The best I've managed is to boot by modifying the GRUB configuration with pci=noapic. This allowed me to access the desktop, install the proprietary Nvidia595 driver, and it works. However, the sound from the speakers and the headphone jack doesn't work. Only Bluetooth works. I want to be able to remove the noapic command and boot normally. I've already disabled Secure Boot and tried everything I found online (drivers, other boot modes, other variations of noapic, nomodeset, etc.). Is there a patch that will fix this? Is one planned?

• Operating System: Kubuntu 26.04 LTS
• KDE Plasma Version: 6.6.4
• KDE Frameworks Version: 6.24.0
• Qt Version: 6.10.2
• Kernel Version: 7.0.0-15-generic (64-bit)
• Graphics Platform: Wayland
• Processors: 24 × 13th Gen Intel Core i7-13700HX
• Memory: 32 GiB of RAM (31.0 GiB usable)
• Graphics Processor 1: Mesa Intel UHD Graphics
• Graphics Processor 2: NVIDIA GeForce RTX 4070 GPU/PCIe/SSE2
• Laptop Manufacturer: HP
• Product Name: OMEN by HP Transcend Gaming Laptop 16-u0xxx
• System Version: Type1ProductConfigId

GSK_renderer=cairo significantly reduces the memory usage of GTK4 apps.

I am thinking about applying it to some of my low-end computers by adding it to /etc/environment. However, I don't want to turn off system-wide hardware acceleration.

By any chance, does this environment variable stop system-wide hardware acceleration, or is it only for GTK4 apps?

The HP x2 Elite gen 8 laptop was designed for Windows, and Bang & Olufsen worked on improving the sound for it. Ubuntu 25.10 is installed. Apparently they made some changes to the design (maybe the chip; by the way, some Realtek worked with Windows 11). Currently the sound device only works in mono mode.

kostyan@HP-Elite-x2-G8-Tablet:~$ inxi -A Audio: 
Device-1: Intel Tiger Lake-LP 
Smart Sound Audio driver: sof-audio-pci-intel-tgl 
API: ALSA 
v: k7.0.0-15-generic 
status: kernel-api 
Server-1: PipeWire 
v: 1.6.2 status: active

Audio by Bang & Olufsen. 2 Premium stereo speakers (74dB). Realtek ALC3292 Audio codec and 2 NXP TFA9894 discrete amplifiers. 3 Integrated microphones including one world-facing. I'd like to fix this if possible.

I have a problem with thumbnails of graphic and video files on the desktop, I can't see their thumbnails. I only see the default icons of the files. How to fix it?

I seek an editor where Ctrl+C copies, Ctrl+X cuts, Ctrl+V pastes, Ctrl+Z undos, Ctrl+Y redos, F3 searches and F2 renames. When I click the left mouse button, the cursor should go there. All modes should be active at the same time (command and insert and ...).

Also Ctrl+W closes the current tab in tabbed interfaces, Alt+F4 closes the currently focused app, Ctrl+Tab tabs between guess what, tabs, Ctrl+O brings up open dialog, Ctrl+P brings up print dialog,

What Linux editor exists out there that can be used in the terminal and has that behavior?

I run win10 with 18.04LTS VM on virtual box. I am not experienced in VM's but have a need for Linux (personal use) so I thought vBox was the only solution.

I have 2 discrete graphics cards so I want to passthrough one of these to the Ubuntu VM (also for my application to leverage this, and to explore/learn from using the GPU HW).

I believe my hardware is all supported (CPU / 2xGPU's discrete / Motherboard w/VT-D) but I cannot find a clear guide for my goal: GPU passthrough to Ubuntu VM.

My questions:

1. Does this work? (GPU passthrough win10 host --> ubuntu 18.04LTS guest)
2. Is there a clear tutorial/guide on this?
3. KVM or vBOX? (I have a vague impression KVM, which I have no experience with, is the better solution)

Any other help or feedback would be greatly appreciated

Update: 5/31/2020

I just wanted to make clear that I am not using this environment for gaming. I work mostly from win10, but want to accelerate Matlab and Python inside my Linux guest w/GPU pass-through.

After some further reading, I'm unable to determine if virtualbox has any solution for my guest/host. Instead, it might seem VMware vSphere or Workstation-Player might support pass-through.

I set up a PPTP VPN server (insecure, I know, but this effort is primarily a learning experience) using PPTPD on a spare Ubuntu 15.10 desktop I had laying around, but am unable to connect to it from Linux or Windows. When I attempt to connect from an Antergos machine, I get the following output from Network Manager:

Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  Starting VPN service 'pptp'...
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 2903
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN service 'pptp' appeared; activating connections
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: init (1)
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN connection 'HawkHouse' (ConnectInteractive) reply received.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: starting (3)
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: pppd started with pid 2910
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN connection 'HawkHouse' (Connect) reply received.
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
Mar 15 10:21:15 mblasco-XPS pppd[2910]: pppd 2.4.7 started by root, uid 0
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  (ppp0): new Generic device (carrier: UNKNOWN, driver: 'unknown', ifindex: 16)
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Using interface ppp0
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Using interface ppp0
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Connect: ppp0 <--> /dev/pts/1
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Connect: ppp0 <--> /dev/pts/1
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Mar 15 10:21:15 mblasco-XPS pptp[2912]: nm-pptp-service-2903 log[main:pptp.c:333]: The synchronous pptp option is NOT activated
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 1 'Start-Control-Connection-Request'
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:758]: Received Start Control Connection Reply
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:792]: Client connection established.
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:877]: Received Outgoing Call Reply.
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:916]: Outgoing call established (call ID 0, peer's call ID 11).
Mar 15 10:21:16 mblasco-XPS pppd[2910]: Modem hangup
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: Modem hangup
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: Connection terminated.
Mar 15 10:21:16 mblasco-XPS pppd[2910]: Connection terminated.
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  (ppp0): failed to disable userspace IPv6LL address handling
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** (nm-pptp-service:2903): WARNING **: pppd exited with error code 16
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: stopped (6)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state change reason: unknown (0)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  error disconnecting VPN: Could not process the request because no VPN connection was active.

I had this working with the same configuration on an Antergos machine previously, but I cannot seem to get it working under Ubuntu.

I have my router configured to forward port 1723 to the Ubuntu desktop, and it appears from the connection log above that it does make it through and begins communicating with the server, but then drops the connection.

Below are the iptables rules present on the Ubuntu server hosting the VPN:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     gre  --  anywhere             anywhere            
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:1723 state NEW

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
TCPMSS     tcp  --  192.168.1.0/24       anywhere             tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU
ACCEPT     gre  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Any insight? Thanks in advance!

Title says it all, I've tried wifi-hostapd-app but I always run into trouble while installing one of its dependencies, dnsmasq specifically. I read one of the workarounds is to disable Ubuntu's Network Manager, I'd rather not do that.

I have a largish music collection and there are some duplicates in there. Is there any way to find duplicate files. At a minimum by doing a hash and seeing if two files have the same hash.

Bonus points for also finding files with the same name apart from the extension - I think I have some songs with both mp3 and ogg format versions.

I'm happy using the command line if that is the easiest way.