https://bugs.kde.org/show_bug.cgi?id=504086
Bug ID: 504086
Summary: Tearing when refresh rate is over 120hz
Classification: Plasma
Product: kwin
Version: 6.3.4
Platform: Arch Linux
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: bugskde.laurel...@passmail.net
Target Milestone: ---
So I am currently running KDE Plasma 6.3.4 on CachyOS and I have noticed a
weird flickering/tearing bug whenever I am on the desktop, as some apps
(including KDE Panels like the taskbar) will start to tear a lot before
suddenly stopping. After some investigating it seems related to the refresh
rate, as I am using 4k 240hz. If I lower the refresh rate to 120hz, it stops.
The video can be found here:
https://www.reddit.com/r/kde/comments/1khl54f/comment/mr8axrw/
STEPS TO REPRODUCE
1. Own a 4k+high refresh rate monitor
2. Set the resolution to 4k, the refresh rate to at least 144Hz, and the global
scaling factor to 150%.
3. Drag som windows up and down.
OBSERVED RESULT
Crazy tearing/rectangular holes on the window being dragged, and flickering on
the taskbar.
EXPECTED RESULT
Smooth dragging with no artifacts
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.3.4
Graphics Platform: Wayland
Graphics Card: Nvidia RTX 4090, driver is 570.144
Monitor: Alienware AW3225QF QD-OLED 240hz monitor
ADDITIONAL INFORMATION
What is interesting is that this bug does not happen in Gnome at all, so I
suspect that this is somehow related to KDE/Kwin. Perhaps it is related to DSC
as well?
--
You are receiving this mail because:
You are watching all bug changes.
