Bug 501053 - Adaptive sync stutter when a steam notification shows.
Summary: Adaptive sync stutter when a steam notification shows.
Status: REPORTED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 6.3.2
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-03-04 11:58 UTC by Angel
Modified: 2025-03-05 16:35 UTC (History)
1 user (show)

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Description Angel 2025-03-04 11:58:11 UTC 
SUMMARY
Whenever a steam notification appears, there is a stutter, and when it hides there is another stutter. Also happens in mpv in fullscreen.

OBSERVED RESULT
Stutter

EXPECTED RESULT
No stutter

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.13.5-arch1-1
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2

ADDITIONAL INFORMATION
Disabling Adaptive sync fixes the issue.
Comment 1 Angel 2025-03-04 12:00:52 UTC 
(In reply to Angel from comment #0)
> SUMMARY
> Whenever a steam notification appears, there is a stutter, and when it hides
> there is another stutter. Also happens in mpv in fullscreen.
> 
> OBSERVED RESULT
> Stutter
> 
> EXPECTED RESULT
> No stutter
> 
> SOFTWARE/OS VERSIONS
> Linux/KDE Plasma: 6.13.5-arch1-1
> KDE Plasma Version: 6.3.2
> KDE Frameworks Version: 6.11.0
> Qt Version: 6.8.2
> 
> ADDITIONAL INFORMATION
> Disabling Adaptive sync fixes the issue.

Specifically when you move your cursor in mpv. The steam notification issue is probably because it overlays the fullscreen application.