https://bugs.kde.org/show_bug.cgi?id=500365
Bug ID: 500365
Summary: Night color causes degraded graphics performance
Classification: Plasma
Product: kwin
Version: unspecified
Platform: postmarketOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: night color
Assignee: kwin-bugs-n...@kde.org
Reporter: espi...@gmail.com
Target Milestone: ---
SUMMARY
Downstream issue:
https://gitlab.postmarketos.org/postmarketOS/pmaports/-/issues/3271
We tend to use a lot of lower end devices when testing Plasma Mobile, and so
any graphics performance degradation becomes quite noticeable. Night color
especially appears to cause much lower fps with animations which is noticeable
when we interact and scroll widgets using touch.
Suspected to have started happening in Plasma 6.2, but I haven't confirmed for
myself, only the reporter of the downstream issue had caught it then. I can
confirm the issue on Plasma 6.3
STEPS TO REPRODUCE
1. Enable night color (either through the kcm, or in the Plasma Mobile
quicksettings which does the same thing)
2. Scroll webpages in firefox, or interact with the shell
3. Disable night color
4. Scroll webpages in firefox, or interact with the shell
OBSERVED RESULT
There is a lot of frames dropped when night color is enabled.
EXPECTED RESULT
The performance when night color is enabled matches the performance when night
color is disabled.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: postmarketOS edge
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
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