https://bugs.kde.org/show_bug.cgi?id=515660
Bug ID: 515660
Summary: VRR with HDR causing Gama/brightness flicker
Classification: Plasma
Product: kwin
Version First 6.5.5
Reported In:
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Depends on: 502202
Target Milestone: ---
+++ This bug was initially created as a clone of Bug #502202 +++
SUMMARY
When I don't use VRR, everything is fine. 240Hz, HDR, no flicker. Movies via
mpv etc work perfectly with HDR. When I turn VRR on on top of those settings in
KDE -- adaptive sync: Always -- even the normal desktop and windowed apps start
doing this brightness flickering chaotically. There are some moments flicker
free also, so it's not constant strobo at least.
STEPS TO REPRODUCE
1. Have HDR enabled and high refresh rate monitor in top refresh rate.
2. Set adaptive sync to Always in KDE settings.
3. Observe flicker.
OBSERVED RESULT
screen brightness / gamma is flickering.
EXPECTED RESULT
no flickering
SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1
Kernel Version: 6.18.7-arch1 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor
Memory: 32 GB of RAM (31.3 GB usable)
Graphics Processor: AMD Radeon RX 7900 XTX
ADDITIONAL INFORMATION
***
The only way how to get rid of this is to disable VRR again (turn adaptive sync
to never).
Monitor: AORUS FO32U2P variable refresh rate with a 48-240Hz range
Referenced Bugs:
https://bugs.kde.org/show_bug.cgi?id=502202
[Bug 502202] HDR with VRR causing Gama/brightness flicker
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