https://bugs.kde.org/show_bug.cgi?id=477099
Bug ID: 477099
Summary: Fullscreen games tearing with a thick black bar
Classification: Plasma
Product: kwin
Version: 5.27.9
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: vrienddun...@gmail.com
Target Milestone: ---
Created attachment 163217
--> https://bugs.kde.org/attachment.cgi?id=163217&action=edit
Black bar screen tear
SUMMARY
When "allow tearing" is enabled, a tear during fullscreen gameplay shows up as
a big black bar, instead of 2 different frames being displayed by different
parts of the screen. (see attachment)
STEPS TO REPRODUCE
1. Display fullscreen game without V-sync
2. Let frame rate fall below monitors current refresh rate (set to 120Hz (it
can do 144Hz) in my case)
OBSERVED RESULT
A black bar appears where I'd expect a "screen tear" (happens frequently, is
annoying)
EXPECTED RESULT
The old frame is partially shown and the new frame is partially shown
SOFTWARE/OS VERSIONS
Linux: 6.6.1
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
ADDITIONAL INFORMATION
GPU: GTX1060 6GB (proprietary NVIDIA drivers)
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