https://bugs.kde.org/show_bug.cgi?id=412924
Bug ID: 412924
Summary: [kwin_wayland] High CPU usage with Qt 5.14 and mouse
cursor artifacts
Product: kwin
Version: 5.16.90
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-wayland
Assignee: kwin-bugs-n...@kde.org
Reporter: elvis.angelac...@kde.org
Target Milestone: ---
Created attachment 123174
--> https://bugs.kde.org/attachment.cgi?id=123174&action=edit
Picture of the issue
SUMMARY
Since I upgraded to Qt 5.14 beta1, I have kwin_wayland using 25% of my CPU and
artifacts while rendering the mouse cursor (see attached picture).
STEPS TO REPRODUCE
1. Start plasma wayland session
OBSERVED RESULT
Mouse cursor artifacts and kwin_wayland process using 25% of available CPU.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: archlinux
KDE Plasma Version: 5.16.90
KDE Frameworks Version: 5.63
Qt Version: 5.14 beta1
ADDITIONAL INFORMATION
The issue stops happening:
- if the mouse cursor is hovering the window title bar
- if the mouse is hovering an xwayland window
- if the screen is locked
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