https://bugs.kde.org/show_bug.cgi?id=485816
Bug ID: 485816
Summary: Games don't get active priority when running in
fullscreen mode
Classification: Plasma
Product: kwin
Version: 6.0.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compatibility
Assignee: kwin-bugs-n...@kde.org
Reporter: djn...@gmail.com
Target Milestone: ---
SUMMARY
Games that run in fullscreen mode are not seen as active (foreground)
applications (windows), and loose priority due to this. If there are other apps
running in the background (specifically playing audio and or video) like music
players, video players or browsers, they "steal" the processing priority from
the game. That should mean that the scheduler did not get the correct
information. This leads to horrible gaming performance.
STEPS TO REPRODUCE
1. Launch Spotify, Youtube or similar app. Play something with sound and video.
2. Launch a game that runs in fullscreen using wine, Lutris or other.
OBSERVED RESULT
The game experiences horrible frame pacing, stuttering.
EXPECTED RESULT
The game runs smoothly.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.6.28-1-lts (64-bit) Arch, Plasma 6.0.4 Wayland, pipewire
1.0.5
(available in About System)
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
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