https://bugs.kde.org/show_bug.cgi?id=428195
Bug ID: 428195
Summary: Panel triggers constant repaints
Product: plasmashell
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: System Tray
Assignee: plasma-b...@kde.org
Reporter: mgraess...@kde.org
Target Milestone: 1.0
I observed very high cpu usage in kwin_wayland. Investigation with the show
paint effect showed that KWin is constantly repainting the complete screen. By
closing all application windows I could identify plasmashell as the offender
(also high cpu usage but lower than kwin and confirmed by killing and
restarting plasmashell). By making the panel auto-hide I could end the constant
repaint, as soon as the panel is visible, one can observe the constant repaints
again.
I added an empty panel and added plasmoids untill the problem started and could
identify SystemTray.
STEPS TO REPRODUCE
1. Enable show paint effect
2. Make plasma panel autohide
3. hide/show panel
OBSERVED RESULT
the show paint effect shows constant repaint when enabled, which ends as soon
as auto-hide gets enabled, restarts when shown.
EXPECTED RESULT
My notebook doesn't burn my legs :-)
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon Unstable Edition
(available in About System)
KDE Plasma Version: 5.20.80
KDE Frameworks Version: 5.75
Qt Version: 5.15.0
ADDITIONAL INFORMATION
Obviously a Wayland system. When starting Plasma it takes a few seconds till
the Problem emerges, the same is the case when adding system tray to a panel.
If you have any question, please let me know.
Items shown in systray:
* Discover
* keepassx
* owncloud
* telegram
* yakuake
* night-color
* klipper
* battery monitor
* audio
* network manager
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