Bug 406837 - Kwin_wayland takes a whole CPu core when Kmail is open
Summary: Kwin_wayland takes a whole CPu core when Kmail is open
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 5.15.4
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-04-24 09:30 UTC by tromzy
Modified: 2020-10-16 17:00 UTC (History)
0 users

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Description tromzy 2019-04-24 09:30:52 UTC 
SUMMARY
On a Wayland session, I noticed that Kwin_wayland is running between 18 and 25% CPU usage (a whole core)  when Kmail is open (even minimized). Kmail and MySQL also take a lot of CPU but that's probbly unrelated.

STEPS TO REPRODUCE
1. Open a Plasma Wayland session
2. Run Kmail
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.15.4
KDE Frameworks Version: 5.57
Qt Version: 5.12.3

ADDITIONAL INFORMATION
Arch Linux
Comment 1 tromzy 2020-10-16 17:00:48 UTC 
Fixed (for a while I think).