Severe in-game flickering
Hello,
Ever since updating from
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
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.
- The Spell Brigade (Same as Deep Rock Galactic)
- Pacific Drive (Same as Deep Rock Galactic)
- Beam.NG (Same as Final Fantasy)
- Road to Vostok Demo (No flickering)
Versions I tried:
- stable-41.20250227
- stable-41.20250301
- testing-41.20250303
1: https://discuss.kde.org/t/flickering-in-fullscreen-applications-on-wayland-with-night-light-enabled/30822
Ever since updating from
41.20250216.2bazziteI 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
41.20250216.2Let 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.
- The Spell Brigade (Same as Deep Rock Galactic)
- Pacific Drive (Same as Deep Rock Galactic)
- Beam.NG (Same as Final Fantasy)
- Road to Vostok Demo (No flickering)
Versions I tried:
- stable-41.20250227
- stable-41.20250301
- testing-41.20250303
1: https://discuss.kde.org/t/flickering-in-fullscreen-applications-on-wayland-with-night-light-enabled/30822
KDE Discuss
As the title states, I’ve run into an issue where when I mouse over a fullscreen application, such as a game, I get a brief but very noticeable flash. This only occurs when I have the “night light” enabled and only in a wayland session. I previously “fixed” this by downgrading kwin to a version before 6.3.1, but after a system update today, doin...
