Bug 485919

Summary:	Adaptive Sync starts to refresh inconsistently after resuming from sleep mode
Product:	[Plasma] kwin	Reporter:	Pedro Nishiyama <nishiyama.v3>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	xaver.hugl
Priority:	NOR
Version First Reported In:	6.0.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Pedro Nishiyama 2024-04-21 18:59:55 UTC

SUMMARY
When the PC goes to sleep mode and resumes, the VRR starts to refresh inconsistently. It occurs mainly at lower framerates, such as 60~90 FPS, even with consistent frametimes.

STEPS TO REPRODUCE
1. Enter sleep mode
2. Resume
3. Open a game
4. Set 60 FPS cap
5. If possible check your monitor refresh OSD

OBSERVED RESULT
The refresh rate is constantly changing from minimum to maximum instead of staying at 60hz.

EXPECTED RESULT
The refresh rate should be at 60hz in this example.

SOFTWARE/OS VERSIONS
Linux: Artix Linux (radeonsi, navi22, LLVM 17.0.6, DRM 3.57, Mesa 24.0.5, 6.8.5-273-tkg-eevdf)
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0

Comment 1 Zamundaaa 2025-10-17 11:14:54 UTC

This is a driver bug, see https://gitlab.freedesktop.org/drm/amd/-/issues/3546