Severe in-game flickering
Hello,
Ever since updating from
41.20250216.2 I've been having constant flickering with games running in fullscreen (or windowed borderless). My GPU is an AMD 7900XT, and I run the regular bazzite image.
I have a dual monitor setup, two same model monitors (Dell G2724D) running at 1440p165, The model supports VRR, but it doesn't make a difference if it's on or off. I also found a recent KDE forum post [1] where a user mentioned night light causes flickering, but I found it being on or off also makes no difference (I had both VRR and night light off and the issue still persisted).
Lowering the refresh rate of both monitors to 60Hz, turning off one of the monitors, and running the games in windowed mode seemed to stop the flickering (or perhaps made it very unlikely).
Rolling back to 41.20250216.2 "fixes" everything, but is not an ideal solution. The most significant changes seem to be Linux 6.13 and Plasma 6.3.1, and the version bumps happened at the same time so I couldn't check which might've caused the issue.
Let me know if you need additional information.
Games I tested:
- Final Fantasy XIV Online (using XIVLauncher flatpak): Flickering happens when clicking the left or right mouse buttons, at random, and on Alt-Tabbing into or out of the window.
- Deep Rock Galactic: Doesn't happen on mouse click but at random and on alt-tabbing.
Versions I tried:
- stable-41.20250227
- stable-41.20250301
Sidenote:
I'm not sure if it's related, but the same images that caused the flickering also "broke" the KDE "Color Accuracy" setting "Prefer color accuracy" (found in KDE's "Display Configuration" in System Settings). It causes Night Light to work incorrectly (the colors seem to shift in a different direction from red). Using the "Prefer efficiency" setting makes Night Light work as expected.
1: https://discuss.kde.org/t/flickering-in-fullscreen-applications-on-wayland-with-night-light-enabled/30822KDE Discuss
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