I am on the testing release, and use KDE. linux: 6.12.6-1; nvidia-driver 535.216.03. The problem I was experiencing is that I couldn't change the display resolution nor refresh rate. These issues occurred after updating the Linux kernel, everything still works fine on 6.11, so I assume this is related to this bug.
I looked a bit more into it, missing config files seem to be causing issues. Initializing config files using the deprecated nvidia-xconfig, which can be removed afterwards, resolved it: ``` sudo apt install nvidia-xconfig sudo apt nvidia-xconfig sudo apt purge nvidia-xconfig sudo reboot ``` The warning in dmesg appears to remain unchanged though: WARNING: CPU: 4 PID: 1076 at drivers/gpu/drm/drm_file.c:312 drm_open_helper+0x132/0x150 [drm]
