*** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports Please remove this comment after reading and before submitting - thanks! *** SUMMARY When changing brightness or night light the Dell G2724D monitor freezes and no applications on that monitor are accessible through keyboard commands. eg. I can not bring a firefox tab to my second monitor with super+arrow keys. STEPS TO REPRODUCE 1. Open Brightnesss and color widget 2. Change any setting that will apply to the Dell G2724D monitor. 4/5 times the picture will freeze only on this monitor, the second monitor remains usable. The cursor appears frozen, but panning to my second monitor makes it usable on the second monitor. The cursor remains visible and frozen on the dell monitor. 3. Turning off or disconnecting the unresponsive monitor crashes the entire desktop. The desktop goes to black then comes back on with all applications closed or autostarted with errors. OBSERVED RESULT Frozen monitor and desktop crash EXPECTED RESULT Monitor brightness and color setting change without issue. SOFTWARE/OS VERSIONS Linux/KDE Plasma: EndeavourOS KDE Plasma 6.3.4 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.12.0 Qt Version: 6.9.0 ADDITIONAL INFORMATION Wayland, Nvidia 4070S 2 monitors in use. Dell G2724D as primary with the issue, Lenovo L24q-30 as secondary that does not have the issue
The only additional line in journalctl -e /usr/bin/plasmashell after this sequence is: file:///usr/share/plasma/plasmoids/org.kde.plasma.brightness/contents/ui/PopupDialog.qml:93: TypeError: Value is null and could not be converted to an object
I have the same Monitor and the Desktop on the G2724D crashes when using the Night Light slider to adjust color temperature. Operating System: openSUSE Tumbleweed 20250403 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.2 Kernel Version: 6.14.0-1-default (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor Memory: 31.0 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 4070/PCIe/SSE2
journalctl Apr 07 17:14:18 host kwin_wayland[1819]: kwin_wayland_drm: Pageflip timed out! This is a bug in the nvidia-drm kernel driver Apr 07 17:14:18 host kwin_wayland[1819]: kwin_wayland_drm: Please report this at https://forums.developer.nvidia.com/c/gpu-graphics/linux Apr 07 17:14:18 host kwin_wayland[1819]: kwin_wayland_drm: With the output of 'sudo dmesg' and 'journalctl --user-unit plasma-kwin_wayland --boot 0' Apr 07 17:14:19 host kwin_wayland[1819]: kwin_wayland_drm: Pageflip timed out! This is a bug in the nvidia-drm kernel driver OK!
Turning monitor off and on reanimates the desktop.
> kwin_wayland_drm: Pageflip timed out! This is a bug in the nvidia-drm kernel driver It's not wrong. :)
Opened NV bug report: https://forums.developer.nvidia.com/t/kwin-wayland-drm-pageflip-timed-out/329529
*** Bug 503560 has been marked as a duplicate of this bug. ***
Installing Nvidia beta drivers (currently 575.51.02) fixed this for me. Can anyone confirm this? --------------------------------- Arch specific instructions to install Nvidia beta drivers on Arch This may be useful for people on Arch with a Nvidia Turing card (or if you have installed nvidia-open-dkms). Steps will differ if you have installed currently nvidia-dkms (other microarchitecture generations). Warning: using -Rdd removes packages regardless of depencies, which was necessary on my machine. It will break your system if you do not re-install all the required packages manually immediately! Use at your own risk. > yay -Syyu > yay -Rdd nvidia-open-dkms nvidia-utils lib32-nvidia-utils nvidia-settings opencl-nvidia > yay -S nvidia-open-beta-dkms nvidia-utils-beta lib32-nvidia-utils-beta nvidia-settings-beta opencl-nvidia-beta > reboot