https://bugs.kde.org/show_bug.cgi?id=510240
Bug ID: 510240
Summary: High cpu usage (10%) which goes away when taskbar auto
hide is off
Classification: Plasma
Product: kwin
Version First 6.4.5
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: effects-window-management
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 185519
--> https://bugs.kde.org/attachment.cgi?id=185519&action=edit
errors from journalctl
SUMMARY
I've been very confused by htop readings of 10% or more cpu utilization even
when idle for kwin_wayland process.... Tried many stuff but in the end it seems
like bringing up the taskbar from auto hide mode lets cpu go back to 1% or 2%
usage. Attached journalctl logs which mention some other errors as well.
STEPS TO REPRODUCE
1. Start something for example floorp
2. Ensure cpu goes above 10% or something
3. Close it after some time
OBSERVED RESULT
CPU usage doesn't go below 10% and sometimes more unless taskbar is activated
or kwin_wayland --replace is run.
CPU usage drops immediately as well
EXPECTED RESULT
CPU usage should be lower when idle
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-4-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 12 × 12th Gen Intel® Core™ i5-12450H
Memory: 16 GiB of RAM (15.3 GiB usable)
Graphics Processor 1: Intel® Graphics
Graphics Processor 2: NVIDIA GeForce RTX 4060 Laptop GPU
ADDITIONAL INFORMATION
I have been using cachyos repo packages installed while pacstrapping (its a
recent re-installation).
Installed mesa-tkg-git and also tried Intel Xe driver both high cpu usage issue
and the other errors still persist.
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