https://bugs.kde.org/show_bug.cgi?id=431546
Bug ID: 431546
Summary: Stutter on Wayland session
Product: kwin
Version: git master
Platform: Other
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 134805
--> https://bugs.kde.org/attachment.cgi?id=134805&action=edit
The usual qdbus org.kde.KWin /KWin supportInformation
SUMMARY
Animations both on X11 and Wayland stutter, no matter the animation smoothness
setting.
Setting the "force smoothest animation" setting has no effect on making this
any better.
On Wayland, *everything* stops. Mouse movement, typing, everything. Nothing
seems to be excluded from stuttering every 10 seconds or so for about half a
second up to 2 seconds. Specially noticeable on mouse movement.
On X11 it's not as extreme. It does stutter, but it doesn't pause *everything*
when it does so, so I can see what I'm typing, I can move my mouse, etc. On
Wayland the compositor just freezes everything every 10 or 15 seconds for like
half a second or so. It's extremely bad.
Video of the issue: https://youtu.be/5L_kVV2JGPU
STEPS TO REPRODUCE
1. Install latest KWin master
2. Start wayland session
OBSERVED RESULT
3. Everything stutters a lot.
This seems to be hit-and-miss. On my laptop it's *fine*. On my PC it's horribly
bad. And my PC is definitely more powerful than my lappy :p
I got a video of it: https://youtu.be/5L_kVV2JGPU
EXPECTED RESULT
At the very least not this amount of stutter, but no stutter would be nice.
Mouse movement not stopping.
Being able to type a sentence without the compositor stuttering mid-sentence
and not rendering what I'm typing until the (1 second or 2 second long) stutter
stops
SOFTWARE/OS VERSIONS
Linux: 5.10.6
KDE Plasma Version: 5.20.80
KDE Frameworks Version: 5.19
Qt Version: 5.15.2
ADDITIONAL INFORMATION
This is unrelated to 431509 and 431449. Got told to make a new bug, so please
don't mark it as duplicate :(
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