https://bugs.kde.org/show_bug.cgi?id=504272
Bug ID: 504272
Summary: Screen flicker when hovering mouse to other monitor in
fullscreen application
Classification: Plasma
Product: kwin
Version: 6.3.5
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: kacper.kon...@gmail.com
Target Milestone: ---
Created attachment 181338
--> https://bugs.kde.org/attachment.cgi?id=181338&action=edit
firefox fullscreen flickering
When an application is running in fullscreen and cursor is moved to other
monitor, the screen on which the application is opened flickers once when
leaving the monitor area, and also when entering the same. If fullscreen
applications are opened on both monitors, both monitors flicker.
Interestingly, when "Show FPS" option is enabled from Desktop Effects, the
issue no longer persists. Video attached with Firefox in fullscreen on one
monitor. Issue is also noticeable in other apps. Running applications using
e.g. gamescope also mitigates the flickering.
Downgrading kwin to 6.3.4-4 fixes the issue.
reproducible on versions:
kwin 6.3.5-1
wayland 1.23.1-2
linux 6.14.6.arch1-1
mesa 1:25.0.5-1
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