https://bugs.kde.org/show_bug.cgi?id=516304
Bug ID: 516304
Summary: Flickering horizontal line with fullscreen games in
non-native resolutions
Classification: Plasma
Product: kwin
Version First 6.6.0
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 189809
--> https://bugs.kde.org/attachment.cgi?id=189809&action=edit
Video of the issue
SUMMARY
After upgrading Plasma to 6.6, I began having issues on my LG CX. A flickering
horizontal line appears on top of the screen. This only seems to happen when
running games fullscreen in non-native resolutions - In my case I am running
the TV at 2560x1440. Meanwhile at 3840x2160 the issue does not appear. This
happens regardless of VRR, HDR, Vsync being on or off.
STEPS TO REPRODUCE
1. Set the desktop resolution to 1440p
2. Launch a game in fullscreen
3. Have some movement in-game for the camera to amplify the issue
OBSERVED RESULT
A flickering horizontal line appears on top of the screen.
EXPECTED RESULT
No such flicker/line should appear.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 43 KDE
KDE Plasma Version: 6.6.0
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.1
Kernel Version: 6.18.10-200.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
Curiously this issue only seems to happen over HDMI with the LG OLED TV - if I
run the same test on an ultrawide monitor running through DP at the non-native
2560x1440 I couldn't reproduce the issue. This is not a duplicate of 474488,
since I don't have panels on the TV screen.
--
You are receiving this mail because:
You are watching all bug changes.
