https://bugs.kde.org/show_bug.cgi?id=441555
Bug ID: 441555
Summary: Audio Volume applet cause high CPU usage spike
Product: plasmashell
Version: 5.22.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: System Tray
Assignee: plasma-b...@kde.org
Reporter: danglaxi...@gmail.com
CC: mate...@gmail.com
Target Milestone: 1.0
SUMMARY
Audio Volume applet causes high CPU usage spike and the current workaround is
to disable the applet via System Tray Config. More details:
https://www.reddit.com/r/kde/comments/pbbzqh/plasmashell_suddenly_eats_up_100_of_cpu/
STEPS TO REPRODUCE
1. Install Arch Linux and KDE
2. Open htop and see plasmashell consuming 50% of all CPU cores usage for about
1 second
3. After about 5 seconds the usage drop down to normal and spike up again a few
seconds later
OBSERVED RESULT
Endlessly 50% usage CPU spike from plasmashell service (causes by Audio Volume
applet)
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
Kernel Version: 5.13.12-xanmod1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 4800H with Radeon Graphics
Memory: 15.1 GiB of RAM
Graphics Processor: AMD RENOIR
ADDITIONAL INFORMATION
I kill the process and start it in the terminal to monitor the error output.
Here is the result (https://pastebin.com/YrNTUeqS). Everytime the line
"qrc:/plasma/plasmoids/org.kde.plasma.volume/contents/ui/ListItemBase.qml:233:
TypeError: Cannot read property 'visible' of null" appear the CPU usage spike
up
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