Out of nowhere came this error. The system is not firing up anymore. See below boot messages. Please help (I have files that are not in backup yet...)

BusyBox v1.36.1 (Ubuntu 1:1.36.1-6ubuntu3.1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

## (initramfs) help
Built-in commands:
__________________

    . : [ alias break cd chdir command continue echo eval exec exit
    export false getopts hash help history let local printf pwd read
    readonly return set shift sleep test times trap true type ulimit
    umask unalias unset wait [ [[ acpid arch ascii ash awk base32
    basename blockdev busybox cat chmod chroot chvt clear cmp cp
    crc32 cut date deallocvt deluser devmem df dirname du dumpkmap
    echo egrep env expr false fbset fgrep find fold fstrim grep gunzip
    gzip hostname hwclock i2ctransfer ifconfig ip kill ln loadfont
    loadkmap ls lzop mkdir mkfifo mknod mkswap mktemp modinfo more
    mount mv nuke openvt pidof printf ps pwd readlink reboot reset
    rm rmdir run-init sed seq setkeycodes sh sleep sort stat static-sh
    stty switch_root sync tail tee test touch tr true ts tty umount
    uname uniq wc wget which yes

(initramfs) _

BusyBox v1.36.1 (Ubuntu 1:1.36.1-6ubuntu3.1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) exit
Gave up waiting for root file system device.  Common problems:
  - Boot args (cat /proc/cmdline)
    - Check rootdelay= (did the system wait long enough?)
  - Missing modules (cat /proc/modules; ls /dev)
ALERT! UUID=aef43219-ff23-4e11-8680-689aa9ed58c2 does not exist.  Dropping to a shell!

BusyBox v1.36.1 (Ubuntu 1:1.36.1-6ubuntu3.1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs) _

I was playing in Firefox "forge of empires" when I believe I saw an error note about NVIDIA. I closed all software and did a restart ... to no avail.

In the topics Can I use the Ubuntu logo on t-shirts produced non-comercially? and Is it possible to create Ubuntu Shirts ( Merchandise ), it has been considered primarily the non-commercial usage of Ubuntu. But what if I want to promote the Ubuntu VPS setup service via the landing page? Can I use the Ubuntu logo in main visual to provide the recognition of the design OS for the landing page visitors? I am imagining something like this:

I know that VPS providers used the logo of the OSs in OS selection interface while it is also the commercial usage of the Ubuntu logo.

I'm using rEFInd as my boot manager and I want to boot Ubuntu 26.04 directly by loading the kernel (vmlinuz), bypassing GRUB entirely and without displaying the GRUB menu. I tried several setup and examples but with no sucess. I don't want to remove grub but just skip it at boot. I need generic rEFInd loader that does not hardcode a kernel version, to always load the latest kernel.

Ubuntu 26.04 on EFI rEFInd installed from repo

$ lsblk -f
nvme0n1                                                                                   
├─nvme0n1p1
│       vfat    FAT32         xxx  181M    40% /boot/efi
├─nvme0n1p2
│       ext4    1.0   ubuntu  xxx  101,6G  18% /

$ ls -alh /boot
total 232M
drwxr-xr-x  4 root root 4.0K May 16 17:23 .
drwxr-xr-x 19 root root 4.0K Apr 29 19:44 ..
-rw-------  1 root root  11M Apr 13 10:12 System.map-7.0.0-14-generic
-rw-------  1 root root  11M Apr 22 16:02 System.map-7.0.0-15-generic
-rw-r--r--  1 root root 302K Apr 13 10:12 config-7.0.0-14-generic
-rw-r--r--  1 root root 302K Apr 22 16:02 config-7.0.0-15-generic
drwxr-xr-x  4 root root 4.0K Jan  1  1970 efi
drwxr-xr-x  5 root root 4.0K May 22 17:24 grub
lrwxrwxrwx  1 root root   27 Apr 29 19:44 initrd.img -> initrd.img-7.0.0-15-generic
-rw-------  1 root root  89M Apr 29 17:59 initrd.img-7.0.0-14-generic
-rw-------  1 root root  89M May 16 17:23 initrd.img-7.0.0-15-generic
lrwxrwxrwx  1 root root   27 Apr 23 02:48 initrd.img.old -> initrd.img-7.0.0-14-generic
-rw-r--r--  1 root root 153K Nov 29 09:22 mt86+ia32
-rw-r--r--  1 root root 158K Nov 29 09:22 mt86+x64
-rw-r--r--  1 root root  252 May  4 16:42 refind_linux.conf
lrwxrwxrwx  1 root root   24 Apr 29 19:44 vmlinuz -> vmlinuz-7.0.0-15-generic
-rw-------  1 root root  17M Apr 27 18:30 vmlinuz-7.0.0-14-generic
-rw-------  1 root root  17M Apr 22 16:05 vmlinuz-7.0.0-15-generic
lrwxrwxrwx  1 root root   24 Apr 23 02:48 vmlinuz.old -> vmlinuz-7.0.0-14-generic

What I've tried, adding in /boot/efi/EFI/refind/refind.conf

menuentry "Ubuntu" {
    volume "UUID of EFI partition"
    loader /vmlinuz
    initrd /initrd
    options "root=UUID="UUID of Ubuntu partition" ro quiet splash"   
}

menuentry "Ubuntu" {
    volume "UUID of EFI partition"
    loader /boot/vmlinuz
    initrd /boot/initrd
    options "root=UUID="UUID of Ubuntu partition" ro quiet splash"   
}

menuentry "Ubuntu" {
    volume "UUID of EFI partition"
    loader /boot/efi/vmlinuz
    initrd /boot/efi/initrd
    options "root=UUID="UUID of Ubuntu partition" ro quiet splash"   
}

There's an app name setting in the app store that's not updating automatically; this has been going on for several days now. Could you please take a look? Thank you!

enter image description here

There's an app in the App Center that can't update automatically.

As I'm going through and updating from 25.10 to 26.04, I have noticed that 'software & updates' has been removed. This is something Canonical has advertised ahead of time.

What I want to know is... if any of the functionality (even in part) has been moved to other software? The ability to download and install security patches daily/immediately and the ability to choose which server to download from seems to be pretty vital stuff.

also the ability to alert me when a new version is available is useful too. I know that it is possible to reinstall the app & Canonical may have felt some of the functionality is too dangerous in uneducated hands, but removing all the functionality seems a little harsh. It means that a proper setup will require installing the app from the terminal just to ensure security.

Edit: After running the update on 3 machines, I checked the notes and 'Software & Updates' is not supposed to be removed for updates, it is only supposed to be missing on new installs. Yet it is being removed on updates as well.

Being new to Linux I've installed Kubuntu 26.04. I'm quite happy with it actually, but when I made the first installation, I made the mistake to not encrypt my SSD first. This is not a problem. It's an occasion to learn how to do that, but I've already installed quite a lot of apps and the issue with it is the amount of settings that all those apps require, without mentioning the system itself, security aspects and such.

Even if it will be the same exact SSD on ext4 partition I'm afraid that restoration of the backup may not work as intended because of the encryption and resetting of the partitions.

Then it's not important whether I use a CLI or a UI to do the backup and restoration as long as I have all the necessary directions, but in fact I have no idea if I should use Clonezilla, rsync or Deja Dup. Timeshift only seems to be oriented to file backup rather than the system. What I need is a complete tutorial and for some reason it's very hard to find such a thing although I thought it would be the most common kind of practice. I just get confused with hundreds of contradictory advice on different distros while nobody agrees on any final recommendation.

My computer is a Galaxy Book 2 Pro 5G with Ubuntu 26.04 LTS desktop installed. I have a 5G SIM card inserted. After booting up, the system menu sometimes shows airplane mode, but rarely displays the 5G signal. When I open it (see attached photo), airplane mode is still on. If I turn off airplane mode, Bluetooth automatically turns on. Sometimes, if I restart the computer, the 5G signal button disappears. It seems like airplane mode is automatically on every time I boot up. Also, occasionally, system software updates and applications prompt me to check the network connection status. Could you please take a look? (Internet access is fine; it's just the cumbersome process of turning the 5G signal on and off after booting up.)

system software updates and applications prompt me to check the network connection status.

Help!

I’m completely new to Linux. I’ve dabbled in it over the last 20 or so years but get frustrated and end up back and the dreaded W. So hoping someone can help me with this problem.

I’m trying to run the P25 survey tool. I installed Ubuntu 26 LTS and have followed all the instructions in the read me and on the forum radio reference.com

I’m able to get the script to start but it seems to crash and I can’t figure out why. Below is the output from the terminal.

p25-survey --start 851 --stop 869 --sdr rtlsdr --gain 14 --threshold 14 --rr --hide-no-cc --output /tmp/survey-800.json  
P25 Survey — configuration  
range: 851.0000 – 869.0000 MHz (18.000 MHz)  
band: 800 MHz public safety (rebanded)  
step: 12.5 kHz (1440 steps)  
sdr: rtlsdr  
gain: 14.0 dB  
ppm: 0.0  
threshold: 14.0 dB above noise floor  
dwell: confirm=2.0s, max=12.0s  
output: /tmp/survey-800.json  
mode: FFT energy scan + targeted decode  
  
RadioReference authentication (credentials are not stored)  
Username: kd7jfv  
Password:  
Logged in as kd7jfv (subscription expires Never - Admin)  
  
Phase 1 — energy scan  
found 1 candidate(s)  
Phase 2 — P25 decode \[0/1 done, 0 control channels found, 0 skipped via resume\]  
┏━━━━━━┳━━━━━━┳━━━━━┳━━━━━┳━━━━━━┳━━━━━━┳━━━━━━┳━━━━━━┳━━━━━┳━━━━━┳━━━━━━┳━━━━━┓  
┃ Freq ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ RR ┃  
┃ (MH… ┃ WACN ┃ SYS ┃ NAC ┃ RFSS ┃ Site ┃ Nbrs ┃ RSSI ┃ BER ┃ Dw… ┃ Sta… ┃ Ma… ┃  
┡━━━━━━╇━━━━━━╇━━━━━╇━━━━━╇━━━━━━╇━━━━━━╇━━━━━━╇━━━━━━╇━━━━━╇━━━━━╇━━━━━━╇━━━━━┩  
└──────┴──────┴─────┴─────┴──────┴──────┴──────┴──────┴─────┴─────┴──────┴─────┘  
⠙ Decoding 860.93750 MHz 0.0s / 12s budget  
Traceback (most recent call last):  
File "\<frozen runpy\>", line 198, in \_run_module_as_main  
File "\<frozen runpy\>", line 88, in \_run_code  
File "/usr/local/bin/p25-survey/\__main_\_.py", line 3, in \<module\>  
\_bootstrap.bootstrap()  
\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~^^  
File "/usr/local/bin/p25-survey/\_bootstrap/\__init_\_.py", line 262, in bootstrap  
run(import_string(env.entry_point))  
\~\~\~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File "/usr/local/bin/p25-survey/\_bootstrap/\__init_\_.py", line 38, in run  
sys.exit(module())  
\~\~\~\~\~\~^^  
File "/home/ben/.shiv/p25-survey_cf98cd7e70fb77e1d511189df9bcb98a11054b3c2171ee2fe18f31d9aedf4061/site-packages/p25_survey/cli.py", line 703, in main  
return \_run_scan(cfg)  
File "/home/ben/.shiv/p25-survey_cf98cd7e70fb77e1d511189df9bcb98a11054b3c2171ee2fe18f31d9aedf4061/site-packages/p25_survey/cli.py", line 360, in \_run_scan  
record = decode_candidate(  
freq_hz=cand.freq_hz,  
...\<7 lines\>...  
debug=10 if cfg.verbose else 0,  
)  
File "/home/ben/.shiv/p25-survey_cf98cd7e70fb77e1d511189df9bcb98a11054b3c2171ee2fe18f31d9aedf4061/site-packages/p25_survey/decoder.py", line 282, in decode_candidate  
from gnuradio import op25_repeater # noqa: PLC0415  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
ImportError: cannot import name 'op25_repeater' from 'gnuradio' (/usr/lib/python3/dist-packages/gnuradio/\__init_\_.py)

I am a new Ubuntu user. My NAS is a Thecus N5200 Pro I believe. What happened is that it was unstable for a few days, before it got inaccessible.

I discovered that disk 3 of 5, was dead, no movement when tested with icy box docking.

Disk, 1, 2, 4 and 5, are still OK, and I have made an image file of each.

The Thecus N5200 reports "no RAID" in startup dialogue, and no RAID is found when entering NAS through the IP address, so the RAID setup is lost. I hope to find the RAID setup in the remaining 4 disks.

Unfortunately, I am not sure what RAID was set up on the Thecus before the crash. I guess it has to be the one where only one disk can be missing before data loss, but I am not sure.

I hope to reassemble RAID from metadata on the remaining disks, or by other means extract any files possible.

The HDDs with the .img copies, are now mounted in another computer, running Ubuntu.

I have come to understand that there are a lot of options in Ubuntu to diagnose, reassemble and extract data, but I am uncertain what steps to take and how. I understand that much can be done with Ubuntu, and maybe some are better done with testdisk.

I just wanna share my experience of 2 weeks trying to install an autoinstaller image of noble onto a special workstation.

We have an autoinstaller image that works well for hundreds of computers and it deploys a heavily customized version of Ubuntu, where corporate login work and so forth. So far so good. I wanted to install that on a Dual AMD Epyc workstation, which proved to be impossible.

What is the main issue? the mainboard has an internal ASMB10-iKVM module, so you can access the device remotely because that thing is quite loud and is located in a dedicated room. That KVM module also provides an virtual USB LAN adapter, so that the host-system can talk to the KVM over that virtual LAN interface. That interface uses the cdc_ether module and is enumerated as enx[MAC-ADDR].

It took me a long time and many image-rebuilds to figure out, that the installer initializes the network like 3 times in a row. First in initramfs, then during the installer pre-phase and then when the actual installer launches it resets the network config again.

My first solution was to convince the network manager to assign a static IP to that interface or disable it, but rebuilding the minimal.squasfs is not the easiest task tbh and I think I have still messed something up here, because even after 10-20 rebuilds in different configurations the setup was not able to continue (either network issue or I think an issue with the checksums). I gave up after while, when i figured out I could just disable the cdc_ether module in grub. That helped to remove the enx interface and solved my network issue entirely.

But for some reason, even though I just blacklisted the module in grub, the installer was not able to perform apt-get update anymore, even though the entire image was unchanged. There is no explanation whatsoever, why this simple change can trigger apt-get update to fail, network is 100% functional at this point. I guess its just my luck. No technical explanation, just random chance.

I have tried to fix apt, but it failed with so many errors... first its not possible to set it back to cdrom anymore, even though the entire main and restricted packages are in the image. The when trying to set cdrom in the sources, it cant find the packages and release-info because all filenames are lowercase in the ISO image but apt expects capitalized names. Fixing that leads to signature errors, trying to disable the requirement for signed repos still lets the apt-get update fail. After two weeks and like 50 image rebuilds or so and hundreds of Copilot and GPT sessions I just did the simplest thing... install on a different machine and just copy the SSD to the big workstation. Now Ubuntu works and I wasted a lot of time for nothing. Im not even sure if its possible to get the installer running on that particular workstation. But at least its working and I have learned... something: Dont mess with Subiquity.

The complexity of Subiquity and the entire installer-process is quite too big TBH. If any issues occur, it feels impossible to debug even for someone like me, who installs all kinds of Linux distros since over 20 years on an almost daily basis. The layered filesystem, the multiple network inits, the apt-complexity... not even ChatGPT and Copilot were able to handle that.

Recently upgraded to 26.04 LTS.

Attached a USB external HDD with Win10 installed, plugged it into my mini-Computer that uses M.2 SSD but doesn't have any SATA connection so the HDD has to be external. This is a non dual boot drive, it only has Win10 on it.

The Disks app in Mate desktop sees the Win10 drive and allows mounting the 1st and 3rd Windows partitions but it won't mount the files partition #2. It shows "Error mounting File system" when I try to mount the files partition. I was able to read Win10 files off this same HDD back when I had 25.04 or perhaps 24.04.

I've checked AI for a solution to mounting that partition but nothing worked.

Is Ubuntu 26.04 supposed to still be able to read NTSF files like in the past? Or has that changed?

Thanks.

PS: I see an answer from V14.04 but I'd rather see something more recent if I need to use terminal commands.

I’m troubleshooting a suspend problem on Ubuntu. When I close the lid or run sudo systemctl suspend, the laptop screen goes black, but it does not properly sleep or resume. The power button light stays on, and the machine becomes unresponsive. I have to hold the power button to force shutdown.

This started/persists on kernel:

Linux jamshaid-laptop 7.0.0-15-generic #15-Ubuntu SMP PREEMPT_DYNAMIC Wed Apr 22 16:06:43 UTC 2026 x86_64 GNU/Linux

Hardware:

HP Pavilion Gaming Laptop 15-ec2xxx AMD Cezanne APU NVIDIA GTX 1650 Mobile / Max-Q Realtek RTL8852AE Wi-Fi/Bluetooth

Relevant current suspend mode:

cat /sys/power/mem_sleep

Output:

[s2idle] deep

  Kernel command line includes:

  mem_sleep_default=s2idle

I previously tried deep as well, but the issue persisted.

The failure pattern in journalctl is consistent. The system reaches suspend entry and then never logs a suspend exit. Example from a failed boot:

May 22 20:12:55 systemd-logind[2690]: The system will suspend now!
  May 22 20:12:56 systemd[1]: Reached target sleep.target - Sleep.
  May 22 20:12:56 systemd[1]: Starting nvidia-suspend.service - NVIDIA system suspend actions...
  May 22 20:12:56 suspend[12351]: nvidia-suspend.service
  May 22 20:12:56 systemd[1]: nvidia-suspend.service: Deactivated successfully.
  May 22 20:12:56 systemd[1]: Finished nvidia-suspend.service - NVIDIA system suspend actions.
  May 22 20:12:56 systemd[1]: Starting systemd-suspend.service - System Suspend...
  May 22 20:12:56 systemd-sleep[12540]: Successfully froze unit 'user.slice'.
  May 22 20:12:56 systemd-sleep[12540]: Performing sleep operation 'suspend'...
  May 22 20:12:56 kernel: PM: suspend entry (s2idle)

After that, there is no PM: suspend exit. The next boot only happens after a hard power-off.

I originally had NVIDIA suspend hook errors like this:

NVRM: PreserveVideoMemoryAllocations module parameter is set.
  System Power Management attempted without driver procfs suspend interface.
  nv_pmops_suspend [nvidia] returns -5

I fixed that by enabling the NVIDIA systemd services:

sudo systemctl enable nvidia-suspend.service nvidia-resume.service nvidia-hibernate.service

Now they are enabled:

nvidia-suspend.service: enabled
  nvidia-resume.service: enabled
  nvidia-hibernate.service: enabled

NVIDIA driver details:

NVIDIA driver 580.142

NVIDIA module options:

options nvidia_drm modeset=1
  options nvidia NVreg_PreserveVideoMemoryAllocations=1
  options nvidia NVreg_TemporaryFilePath=/var/tmp

/proc/driver/nvidia/params confirms:

PreserveVideoMemoryAllocations: 1
  TemporaryFilePath: "/var/tmp"

I also switched PRIME mode from full NVIDIA mode to on-demand:

prime-select query

Output:

on-demand

But suspend still freezes in the same place.

Loaded relevant modules:

nvidia_uvm
  nvidia_drm
  nvidia_modeset
  nvidia
  amdgpu
  rtw89_8852ae
  rtw89_8852a
  rtw89_pci
  rtw89_core
  btusb
  bluetooth

There are also Realtek WiFi firmware/driver errors in recent logs:

rtw89_8852ae 0000:03:00.0: FW status = 0x44001100
  rtw89_8852ae 0000:03:00.0: FW BADADDR = 0xee00
  rtw89_8852ae 0000:03:00.0: SER catches error: 0x1000
  rtw89_8852ae 0000:03:00.0: firmware failed to ack for leaving ps mode
  rtw89_8852ae 0000:03:00.0: SER catches error: 0x4000

I tried turning WiFi off and stopping Bluetooth before suspend:

nmcli radio wifi off
  sudo systemctl stop bluetooth
  sudo systemctl suspend

But it still froze. Looking at logs, Bluetooth appears to have been restarted automatically by wireplumber/blueman right before suspend, so I’m not sure that test fully isolated the Realtek device.

One failed attempt showed:

NetworkManager: manager: rfkill: Wi-Fi hardware radio set disabled
  systemd: Stopping bluetooth.service - Bluetooth service...
  systemd: Stopped bluetooth.service - Bluetooth service.
  dbus-daemon: Activating via systemd: service name='org.bluez'
  systemd: Starting bluetooth.service - Bluetooth service...
  systemd: Started bluetooth.service - Bluetooth service.
  blueman-applet: adapter powered on while in off state, turning bluetooth on
  ...
  kernel: PM: suspend entry (s2idle)

  Sleep targets are not masked:

  systemctl is-enabled sleep.target suspend.target hibernate.target hybrid-sleep.target

Output:

static
  static
  static
  static

Things already tried:

1. Changed between deep and s2idle suspend modes.
2. Enabled NVIDIA suspend/resume/hibernate systemd services.
3. Verified NVIDIA PreserveVideoMemoryAllocations and TemporaryFilePath.
4. Switched PRIME mode to on-demand.
5. Tried WiFi off and Bluetooth stopped before suspend.
6. Checked for inhibitors; no persistent blocker found.

Current behavior:

• Lid close: screen goes black, power light remains on, system stalls.
• sudo systemctl suspend: same behavior.
• No successful resume.
• No "PM: suspend exit" in journal.
• Requires hard power-off.

My main questions:

1. How can I identify which device/driver is hanging after PM: suspend entry (s2idle)?
2. Could this be a kernel 7.0.0-15-generic regression with rtw89_8852ae, NVIDIA, or AMD suspend?
3. What is the correct way to fully isolate the Realtek RTL8852AE WiFi/Bluetooth module before suspend?
4. Are there known rtw89_pci module options for suspend issues, such as disabling ASPM or CLKREQ?
5. Should I boot and pin an older kernel such as 6.17.0-23-generic if suspend works there?

I am looking for a proper debugging path or workaround.

Update after following Ubuntu DebuggingKernelSuspend:

I tested pm_test=freezer.

Commands used:

sudo sh -c 'echo freezer > /sys/power/pm_test'
cat /sys/power/pm_test
sudo systemctl suspend

Result:

The system froze during pm_test=freezer and did not return automatically. I had to hard power off using the power button.

After reboot I restored pm_test:

sudo sh -c 'echo none > /sys/power/pm_test'
cat /sys/power/pm_test

Output:

[none] core processors platform devices freezer

I did not continue with devices/platform/processors/core because freezer is already the first failing pm_test stage.

Kernel:

Linux jamshaid-laptop 7.0.0-15-generic #15-Ubuntu SMP PREEMPT_DYNAMIC Wed Apr 22 16:06:43 UTC 2026 x86_64 GNU/Linux

Sleep mode:

cat /sys/power/mem_sleep

Output:

[s2idle] deep

suspend_stats after the hard power-off/reboot:

success: 0
fail: 0
failed_freeze: 0
failed_prepare: 0
failed_suspend: 0
failed_suspend_late: 0
failed_suspend_noirq: 0
failed_resume_noirq: 0
failed_resume_early: 0
failed_resume: 0
failures:
  last_failed_dev:
  last_failed_errno: 0
  last_failed_step:

Important log lines around the freezer test:

May 23 08:36:32 jamshaid-laptop sudo[9734]: jamshaid : TTY=/dev/pts/0 ; PWD=/home/jamshaid/suspend-debug ; USER=root ; COMMAND=/usr/bin/sh -c echo freezer > /sys/power/pm_test
May 23 08:36:32 jamshaid-laptop sudo[9745]: jamshaid : TTY=/dev/pts/0 ; PWD=/home/jamshaid/suspend-debug ; USER=root ; COMMAND=/usr/bin/systemctl suspend
May 23 08:36:32 jamshaid-laptop systemd-logind[2163]: The system will suspend now!
May 23 08:36:32 jamshaid-laptop ModemManager[1992]: [sleep-monitor-systemd] system is about to suspend
May 23 08:36:32 jamshaid-laptop NetworkManager[1919]: manager: sleep: sleep requested
May 23 08:36:33 jamshaid-laptop kernel: r8169 0000:02:00.0 eno1: Link is Down
May 23 08:36:33 jamshaid-laptop kernel: wlo1: deauthenticating from <AP> by local choice (Reason: 3=DEAUTH_LEAVING)

There is no clean return/resume recorded. The machine required hard power-off.

I have also created an archive with the collected logs:

suspend-debug-freezer-fail.tar.gz

The microphone of my laptop Lenovo Ideapad 330 running Ubuntu 22.04 doesn't work, there is no hardware issue. Is it a driver's problem?

I cannot update. Boot/efi is OK, can only disconnect.I try to avoid reinstallation...please see my Screenshot. Im̀ just a regular user. Thanks for your support!!!

Ralph

Trying to install Ubuntu Desktop on Samsung NP930QDB-KD3US, the installation copies files and so forth normally until a fatal error that grub-install fails.

There is no dual-boot, and Windows was removed.

I tried this with Ubuntu 24.04 and 26.04. I tried with full-disk encryption and without it. I tried numerous setting changes in CMOS/BIOS, including making sure Secure Boot was disabled.

Under 24.04, I tried formatting the internal volume /dev/nvme0n with a 256MB EFI partition as /dev/nvme0n1, a 2GB /boot as /dev/nvme0n2, and a 512GB / as /dev/nvme0n3. Under 26.04, the installer automatically assigned EFI to /dev/nvme0n2 when creating /boot as /dev/nvme0n1, but the configuration was otherwise the same.

I tried both installing GRUB to /dev/nvme01n and to the EFI partition.

I tried manually overwriting the first gigabyte of the volume

dd of=/dev/nvme01n if=/dev/zero bs=1M count=1024

What totally mystifies me is that MX Linux (MX-25.1_Xfce_ahs_x64) installs and works with no trouble; it is based on Debian 13.3 (trixie). Whatever the problem is must be specific to Ubuntu.

I installed Ubuntu 26.04 on a laptop of mine to use it as a Minecraft server, I've retrieved a map we were playing with friend to host it by myself on this laptop.

It is a modded Minecraft, the modpack name is Prominence 2.

I have successfully installed the server, I run it, and I can join the world from my other laptop, but after around 1 minute I am losing the connection and disconnect from the server.

On the server log, just before disconnecting there is an error saying:

[Netty Epoll Server IO #3/ERROR]: Exception occurred in netty pipeline

My friends have the same issue, and I tried to install and run a vanilla server and the issue is not present, so I assume my issue come from my Ubuntu installation but I cannot tell.

Does anyone have any idea what is happening?

Here are the server's and client's logs:

https://filebin.net/jhptsn73ftiyt4rw

After downloading files (archives, images, deb packages), a kernel panic appears in the web browser and anywhere on the disk. Tell me how to fix it. Everything works fine, but because of this it is completely impossible for me to use my Ubuntu 26.04.

Kernel panic:

Link to Video

Specs:

• Ubuntu 26.04

• Intel 3556U

• 8GB RAM

• 480GB SATA SSD ROM

I use Ubuntu Desktop 25.10 and want to upgrade to Ubuntu 26.04
I have updated + upgraded my packages multiple times, yet the same error occurrs:

Reading cache
Distribution data outdated 
Please ensure all package updates are installed, and then try again. 
=== Command detached from window (Wed May 20 22:51:41 2026) ===
=== Command terminated with exit status 1 (Wed May 20 22:51:51 2026) ===

The output of sudo apt update and sudo apt upgrade:

gamer@black-mesa-terminal:~$ sudo apt update && sudo apt upgrade
[sudo: authenticate] Password: 
Hit:1 http://archive.ubuntu.com/ubuntu questing InRelease
All packages are up to date.    
Summary:                        
  Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
gamer@black-mesa-terminal:~$ ```

I have a Ubuntu OS 24.04 LTS and it has a RTL8192EE PCIe wireless network adapter.

When I updated to 26.04 from terminal using sudo do-release-update -d my wireless adapter stopped working, and I have no clue why. I wonder that the drivers from that adapter are updated just for Windows, because when you visit the drivers website (https://www.realtek.com/Download/List?cate_id=672&menu_id=297) it only shows the Windows drivers, not Linux or others.

I tried re-scanning the drivers and making rm to reinstall them, viewing Secure Boot, rfkill bloq, NetworkManager restart.

Is changing the PCIe Adapter an option? Is there other way to solve it?

I am at a complete loss at this point in time. No matter what I do, upgrading to 26.04 was a mistake. Had nothing but gui issues (using a gtx 1660 ti), apps weren't working in the slightest. So I went back to 24.04.

Anyways the problem(s) at hand.

tldr; Having all the problems in the title, but not sure how to solve them. Seeking help!

The force reboot keeps happening. For no reason, I would be in the middle of a video, maybe I'm in the middle of writing code on visual studio code. Maybe I am doing my art design or whatever. Ubuntu will force restart my computer for no reason. Doesn't ask, just does. This is a reoccurring problem I've been having with ubuntu.

I have an xp pen artist 12 pro external drawing monitor. Sometimes when I am using it or it's connected, the display will stop working. Likewise it flickers on and off.

Apps flickers. Quite often actually. Between steam. Videos or websites on Firefox, they flicker at a constant rate. Probably happens about 10x a day in a 8 hour span of being on this computer.

The pointers and keyboards will randomly stop working. To the point that logging out does nothing. I have to force reboot. Wondering if this relates to being with a laptop and having hooked up devices. But shouldn't make a difference.

Now my question at hand is... How do I solve these issues? I have been trying different work arounds. Different drivers, upgrading ubuntu. Downgrading. Changing settings. But nothing seems to work. I've only been using Ubuntu base for about 2 months now. Prior I've always used Budgie, Pop OS and even bazzite (also technically ubuntu studio). But these problems seem to only occur on ubuntu base.

To note, major reason I wanted to use ubuntu base was for the sake of Visual studio code working somewhat flawlessly on here. Which it does.

Also I should note that I have run this specific laptop on Bazzite and PopOS. My other dual boot is bazzite.

just upgraded to 26.04,, and all looks good, but "you tube" glitches , repeating black screen and then displays video resolution , video continues until next black screen about 1-2 mins later,.

any help would be helpful as i am sensitive to flicking lghts

firefox loads other pages ok

found fix . replaced nvidia drivers

sudo ubuntu-drivers devices

then sudo apt-get install < recomended driver> then restart

So I recently updated to 26.04, from 25.10. And now when I put my Laptop into sleep mode, It causes a kernel panic (Caps lock Key Flashing), and when I check the logs, It says "e1000e 0000:00:19.0 eno1: NIC Link is Down". This wasn't a problem in 25.10, until I tried 26.04's beta. That was the first instance of this error. Checking Resources, my Ethernet port uses the driver e1000e, and interface: eno1. I don't use Ethernet, I use WiFi (Specs Below)

--Edit--

Apparently my Wifi card (BCM4352) was the problem, and I fixed it by reinstalling the drivers for the card, *The problem was the kernel version

/dev/mapper/secrets /mnt/secrets ext4 defaults,nofail,x-systemd.device-timeout=5s 0  2

I have a small TPM-backed LUKS partition where I keep my secrets. I want the OS to be able to try to unlock the secrets partition, but if it fails, I want the OS to proceed with the boot process anyway. That way, if the unlock fails, my OS doesnt brick up and I can resolve the issue by re-enrolling the TPM key to the partition.

Since updating to Ubuntu 26.04 on my laptop, I've been having an issue where the screen just goes black after Ubuntu boots up. I see the boot animation, but as soon as I reach the login screen, the screen goes black. When I connect a second monitor, I can see that everything works fine on it. I’ve already found a workaround to reactivate the primary screen: if I briefly close the laptop and then open it again, everything suddenly works as it should. I generated a GPU log of the startup. You can see that after 9 seconds, the graphics card tries to communicate with the screen and apparently fails. A clean install did not fix the problem. Does anyone have any idea how to fix this?

Hardware specs: ASUS Viviobook TN3402QA AMD Ryzen 7 5800HS with integrated Radeon RX Vega 8 graphics card

Here is an excerpt of the log:

[    8.802777] [drm] Initialized amdgpu 3.64.0 for 0000:03:00.0 on minor 1
[    8.823121] fbcon: amdgpudrmfb (fb0) is primary device
[    8.823135] amdgpu 0000:03:00.0: [drm] fb0: amdgpudrmfb frame buffer device
[    8.842110] [drm] pre_validate_dsc:1667 MST_DSC dsc precompute is not needed
[    9.233067] amdgpu 0000:03:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
[    9.449688] amdgpu 0000:03:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
[    9.667098] amdgpu 0000:03:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
[    9.940800] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1122: core_link_write_dpcd (DP_DOWNSPREAD_CTRL) failed
[    9.961162] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1127: core_link_write_dpcd (DP_LANE_COUNT_SET) failed
[   10.001292] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1144: core_link_write_dpcd (DP_LINK_BW_SET) failed
[   10.021449] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1149: core_link_write_dpcd (DP_LINK_RATE_SET) failed
[   11.021179] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1122: core_link_write_dpcd (DP_DOWNSPREAD_CTRL) failed
[   11.041226] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1127: core_link_write_dpcd (DP_LANE_COUNT_SET) failed
[   11.081319] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1144: core_link_write_dpcd (DP_LINK_BW_SET) failed
[   11.101481] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1149: core_link_write_dpcd (DP_LINK_RATE_SET) failed
[   12.150694] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1122: core_link_write_dpcd (DP_DOWNSPREAD_CTRL) failed
[   12.171328] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1127: core_link_write_dpcd (DP_LANE_COUNT_SET) failed
[   12.212682] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1144: core_link_write_dpcd (DP_LINK_BW_SET) failed
[   12.233327] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1149: core_link_write_dpcd (DP_LINK_RATE_SET) failed
[   13.354679] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1122: core_link_write_dpcd (DP_DOWNSPREAD_CTRL) failed
[   13.375666] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1127: core_link_write_dpcd (DP_LANE_COUNT_SET) failed
[   13.416987] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1144: core_link_write_dpcd (DP_LINK_BW_SET) failed
[   13.437652] amdgpu 0000:03:00.0: [drm] *ERROR* dpcd_set_link_settings:1149: core_link_write_dpcd (DP_LINK_RATE_SET) failed
[   13.803319] amdgpu 0000:03:00.0: [drm] enabling link 0 failed: 15
[   35.801921] amdgpu 0000:03:00.0: [drm] *ERROR* dc_dmub_srv_log_diagnostic_data: DMCUB error - collecting diagnostic data
[   47.886079] amdgpu 0000:03:00.0: [drm] PCIE GART of 1024M enabled.
[   47.886086] amdgpu 0000:03:00.0: [drm] PTB located at 0x000000F41FC00000
[   47.886113] amdgpu 0000:03:00.0: SMU is resuming...
[   47.887211] amdgpu 0000:03:00.0: dpm has been disabled
[   47.888408] amdgpu 0000:03:00.0: SMU is resumed successfully!

This issue seems to have arisen after upgrading from 22.04 to 24.04.

• When first logging in, Nautilus will open a folder in about 0.2-0.5 seconds, this is tolerable but still a lot slower than Thunar which is perceptually instantaneous (as it should be, my system is fast and uses SSDs).
• After opening Steam, it takes much longer to open a folder, particularly if there are "many" (100-1000) files, it may take 10-20 seconds to open a folder. Thunar is still instantaneous.
• browsing away from a folder and then back to it, still results in it taking 10 seconds to load, there has been no benefit from caching.
• Closing Steam will result in the time going back down to 0.2-0.5 seconds.
• After a while (maybe 10 minutes?) the slowdown seems to go away even with Steam remaining open.
• Exiting and reopening Steam will make the slowdown occur again, though it seems to recover more quickly, probably because Steam is doing less.
• I don't think the issue is specific to Steam, with Steam just being a large application that touches a lot of things. Also, I'm clearly not blaming Steam here, as Thunar remains instantaneous and Steam doesn't seem to impact any other applications.

Relevant System specs:

• Ubuntu 24.04.1 LTS
• Intel Core i5-12400F CPU
• 32 GB ram
• SSDs

Things I have tried:

apt purge nautilus && apt install nautilus

• Setting ulimit much higher.

• Purging ~/.cache

• Purging anything I could find under ~/ related to nautilus

Looking for errors in syslog - there's nothing.

Running Nautilus with debug messages. During the 10 seconds, it is doing stuff with thumbnails, like this but a lot longer:

(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.060: Called file_get_icon(), at size 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.060: Returning thumbnailed image, at size 22 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.071: Called file_get_icon(), at size 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.077: Called file_get_icon(), at size 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.077: Returning thumbnailed image, at size 30 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.093: Called file_get_icon(), at size 32
(org.gnome.Nautilus:24053): nautilus-file-DEBUG: 11:36:24.104: Called file_get_icon(), at size 32

The log doesn't show anything else happening during the 10 seconds other than thumbnail related stuff.

Possible solutions:

For me an obvious solution is to just use Thunar, even though I'm used to Nautilus.

However considering this is a fairly reproducible on my system, I'd be interested in trying to debug it further.

Edit: Subsequently I have upgraded to newer versions of Ubuntu and no longer have the issue in 25.04, as such I'm unable to verify a fix or that the issue still exists in 24.04.

New to ubuntu, trying to set up a plex box. Had everything installed (22.04) and working great using a 12TB WD Elements external HDD via USB. Suddenly last night, I noticed PLex was not reading new videos added to the directory. This morning, I noticed I couldn't access anything on the drive, with the following error thrown:

Unable to Access "Elements" Error mounting /dev/sdc1 at /media/rob/ Elements: wrong fs type, bad option, bad superblock on dev/sdc1, missing codepage or helper program, or other error.

I'm stumped here as although the HDD is new, it worked perfectly all weekend as I transitioned my media library over to it and connected it to Plex. Absolutely no issues. Then suddenly and completely out of the blue, I get this error. I thought maybe I'd try restarting ubuntu, but no luck.

I have no idea how to go about troubleshooting this. My other USB SSD that is connected does not seem to have this same issue as I can access that without any errors / issues. I can see the drive in Disks, but in Disk Usage Analyzer it shows the drive is not mounted.

Does anyone have any idea what's suddenly caused this issue and how I can correct it?

Thanks in advance.

After a dist upgrade, I get a lot of warnings like this one:

Warning from /etc/apparmor.d/sbin.dhclient (/etc/apparmor.d/sbin.dhclient line 4): apparmor_parser: File '/etc/apparmor.d/sbin.dhclient' missing feature abi, falling back to default policy feature abi

1. what does it means? Google does not help, or I was not able to search it well
2. is it a problem?
3. if so, how can I fix it?

So, my laptop has been "freeze crashing" randomly (System totally unresponsive, mouse freezed, clock not going forward, no keyboard commands have any effect, and the only way to get out of it is hard rebooting using physical power button), from anywhere to a few minutes to several hours of using my computer.

So naturally, I investigated the issue and tried to find a fix. After looking at the kernel log i saw that the last logged events before freezing is several "Hardware Errors":

kernel: mce: [Hardware Error]: Machine check events logged

So, I search it up and try to find solutions. And I did, I found this post. Which basically tells me to add a few boot parameters. And it does fix the issue, I haven't had any more Hardware Errors logged, or any random freezes ever since. These are the boot parameters:

noapic pci=assign-busses apicmaintimer idle=poll reboot=cold,hard

But the issue is, now my laptop is idling at a way higher temperature when using these boot parameters. Around 70 degrees Celsius, instead of 35-40. Now, obviously I've checked System Monitor to see if there is anything taking up CPU usage, but there's nothing. It's using anywhere between 0 to 3% of CPU utilization on all 4 threads, nothing out of the ordinary.

And I know its the boot parameters causing this issue, because I've tried removing them, and after rebooting, fans aren't spinning as loudly and its idling at a normal temperature. But, the Hardware Errors are back, and so are the random freezes.

I am quite a novice at Linux stuff, so I literally have no idea what these boot parameters do. Can someone experienced tell me what it is they're doing, and why they're causing my CPU to idle so much hotter?

EDIT #1

So thanks to the help of matigo and Doug, I was told that the idle=poll parameter is disabling the idle system for the CPU, which obviously make the CPU run hotter and create more waste heat.

When removing that boot parameter, the Hardware Errors are back.

So, my freezes and Hardware Errors seem to have something to do with how the CPU switches between idle states.

My CPU is an Intel Core i7-7500U

This is the output from running grep . /sys/devices/system/cpu/cpu0/cpuidle/state*/name:

/sys/devices/system/cpu/cpu0/cpuidle/state0/name:POLL
/sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1
/sys/devices/system/cpu/cpu0/cpuidle/state2/name:C1E
/sys/devices/system/cpu/cpu0/cpuidle/state3/name:C3
/sys/devices/system/cpu/cpu0/cpuidle/state4/name:C6
/sys/devices/system/cpu/cpu0/cpuidle/state5/name:C7s
/sys/devices/system/cpu/cpu0/cpuidle/state6/name:C8
/sys/devices/system/cpu/cpu0/cpuidle/state7/name:C9
/sys/devices/system/cpu/cpu0/cpuidle/state8/name:C10

So basically what I need help with is this, to get rid of these Hardware Errors and crashes without completely disabling the CPU idle system, if possible.

I am trying to connect to a my SSH server (running on Ubuntu 16.04.2 LTS) from my local machine (Ubuntu 18.04.03 LTS).

I have created a private and public key on my local machine and copied my public key to my SSH server's authorized_keys file.

I could log in with ssh root@ip-address and I have access (as root user), but when I tried to log in as another user with command ssh name@ip-address, it generated an error message:

name@ip_address: Permission denied (publickey)

What can I do so the name@ip-address could be accessed?

I installed Ubuntu16.04, and set firefox as default browser, whenever I open links from external apps these are open as blank tabs in new browser window (no actual redirection to site, just a blank tab).