Bug 485550 - Low fps on the 2nd screen when there's a full screen window on the 1st
Summary: Low fps on the 2nd screen when there's a full screen window on the 1st
Status: RESOLVED NOT A BUG
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: unspecified
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-04-14 16:11 UTC by daron439
Modified: 2024-04-14 17:35 UTC (History)
0 users

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Description daron439 2024-04-14 16:11:56 UTC 
SUMMARY
When I open a full screen window (video in firefox or mpv), the fps on the second monitor gets lower.
This doesn't happen in kwin 6.0.3.1.

STEPS TO REPRODUCE
1. open a full screen video in firefox on the 1st monitor 
2. try scrolling in firefox on the 2nd monitor

OBSERVED RESULT
Scrolling is very laggy

EXPECTED RESULT
Scrolling is smooth

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:  all plasma from the Plasma/6.0 git branch (kwin - fc3a2d0d)
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
2 identical monitors 1920x1080, no scaling
NVIDIA 550.67
Comment 1 daron439 2024-04-14 17:35:45 UTC 
I started to git bisect and I can't reproduce the issue anymore. Maybe a rebuild did the trick... Sorry for the noise.