https://bugs.kde.org/show_bug.cgi?id=436813
Bug ID: 436813
Summary: "Present Windows" animation laggy on Wayland
Product: kwin
Version: unspecified
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: smit1...@gmail.com
Target Milestone: ---
SUMMARY
On wayland "Present Windows" animation is laggy. Its not that bad but
noticeable compared to how smooth it is on xorg. I tried setting all Latency
options in Compositor settings but still no change. other animations like
wobbly windows seems to work fine.
On x11 session, running GPU heavy task in background and bunch of windows open,
its still smooth compared to Wayland.
This problem did not occur when I tested 5.21.0. But I'm now on 5.21.5 and did
not checked wayland in between so cant say which version this bug affects from.
STEPS TO REPRODUCE
1. Log into Wayland session.
2. Open more than 10 windows
3. toggle "Present Windows"
OBSERVED RESULT
laggy Animation
EXPECTED RESULT
smooth animation as x11
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: (available in About System)
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.81.5
Qt Version: 5.15.2+kde+r192-1
ADDITIONAL INFORMATION
CPU: Intel i7-8565U (8) @ 4.600GHz
iGPU: Intel UHD Graphics 620
dGPU: Radeon 520 Mobile (muxless, uses iGPU to render)
tested on both GPUs by setting DRI_PRIME before `startplasma-wayland` command
and getting same result
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