https://bugs.kde.org/show_bug.cgi?id=417592
Bug ID: 417592
Summary: Frame rate drops after suspend/resume cycle
Product: kwin
Version: 5.18.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: bugsefor...@gmx.com
Target Milestone: ---
Created attachment 125984
--> https://bugs.kde.org/attachment.cgi?id=125984&action=edit
X11 before suspend
SUMMARY
I noticed weird cursor movements and choppy scrolling in internet browser on my
system after
suspend/resume cycle. I enabled "Show fps" effect in "Desktop effects" kcm and
saw that frame rate drops from 60 to 45 on X11 and from 50 to 25 on Wayland
after suspend/resume cycle, as we can see in the attached screenshots.
STEPS TO REPRODUCE
1. start X11 session
2. suspend your system and wake up it
3. open any app (Kate, for example) and move cursor on it: cursor lags
4. do logout
5. start Wayland session
6. repeat the steps 2 and 3: cursor lags again
EXPECTED RESULT
frame rate should not change after suspend/resume cycle
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.18.0
KDE Frameworks Version: 5.67.0
Qt Version: 5.14.1
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