Kubuntu stuck at boot screen during shutdown

[thombou]

Hi all,
I am running Kubuntu 24.04 on my laptop.
When I shut down the computer, it gets stuck displaying the boot screen (Dell and Kubuntu logos). After a timeout of roughly 3mins, a lot of logs are printed to the screen and the PC stops.
I cannot access those logs in journalctl since they appear after the logging has been stopped. From what I can see, it displays lines like:

flip_done timed out
[CRTC:80: pipe A] commit wait timed out

avril 02 13:40:54 precision3571 systemd-journald[489]: Journal stopped
-- Boot c0baf7f9b9ab4b6f8d84551412687422 --
avril 02 13:43:56 precision3571 kernel: Linux version 6.8.0-57-generic (buildd@lcy02-amd64-040) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #59-Ubuntu SMP PREEMPT_DYNAM...

I have seen in many posts that the issue might come from nvidia drivers. I have tried to use the "nouveau" driver as well as the NVIDIA ones (installed using the additional driver option in system settings) and I see the same issue.

Any idea what is going wrong?

[skyfishgoo]

are you sure you actually switched to the kernel drivers?

the best way to be sure is completely remove anything related to nvidia by

sudo apt update
sudo apt purge *nvidia*
sudo apt autoremove
reboo​

or it could be you are running an older kernel that doesn't support your hw.. .then try

#to ensure all the correct updates are received
sudo apt install --install-recommends linux-generic-hwe-24.04​