Re: Nvidia drivers stop working on testing after upgrade to kernel 6.12

Hello. I had the same issue and I've found that one of the issues was that the kernel headers were not correctly installed. I ran
apt install linux-headers-$(uname -r)

and after that finished the dkms driver was built.

I am not sure why this happens. Maybe some dependencies are missing?

I hope this helps you

Zeke

El dom, 22 dic 2024 a las 9:07, Rafał Lichwała (<rafal@siliconet.pl>) escribió:

Hi,

Yesterday Debian testing switched from 6.11 to 6.12.
After that upgrade my Nvidia drivers (535.216 from official testing
repo) stop working (KDE Plasma 6.2).

I've fight with this for a whole day, but with no success. Symptoms:
  - SDDM cannot open X for login screen ("failed to read display number
from pipe")
  - so black screen after reboot
  - X reports: failed to open /dev/dri/card0 (invalid argument)

Tried everything (reinstalling nvidia-driver to compile modules for new
kernel during installation etc).

Finally successfully restored my Debian testing by installing Nvidia
Debian drivers from their official web page (version 550 right now).
Graphics is not so good (as it was on official Debian testing repo - for
example google-chrome-stable has some glitches), but desktop environment
works fine.

Any advice or experiences from other Nvidia driver users on Debian testing?

Regards,
Rafal