https://bugs.kde.org/show_bug.cgi?id=492839
Bug ID: 492839
Summary: Severe performance drop when enabling color profiles
on Wayland
Classification: Plasma
Product: kwin
Version: unspecified
Platform: Solus
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: performance
Assignee: kwin-bugs-n...@kde.org
Reporter: alisson....@outlook.com
Target Milestone: ---
Created attachment 173457
--> https://bugs.kde.org/attachment.cgi?id=173457&action=edit
bug reproduction
SUMMARY
After enabling any ICC color profile (imported or "Internal" if there's one),
the `kwin_wayland` process completely takes over my "Render/3D" budget when any
cursor interaction/compositing happens (moving the mouse, interacting with
Plasma, interacting with windows etc.) It doesn't affect FPS games where the
cursor is captured (tested with ULTRAKILL on Proton) or GPU screen recording.
STEPS TO REPRODUCE
1. Open Screen settings
2. Make sure "Color Profile" field is set to "None"
3. Select the "Internal" option or import a color profile on the "ICC Profile"
option
4. Apply changes
OBSERVED RESULT
- Some colors change and the blur effect is noticeably different (more
transparent and with more contrast)
- Desktop performance will be severely impacted
EXPECTED RESULT
There shouldn't be any (?) performance loss after enabling a color profile.
SOFTWARE/OS VERSIONS
Linux: 6.10.8-301.current (64-bit) (Solus 4.5)
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
ADDITIONAL INFORMATION
I'm not very knowledgeable here, maybe this is just an incompatibility with my
system, I wouldn't know.
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