Bug 485550

Summary:	Low fps on the 2nd screen when there's a full screen window on the 1st
Product:	[Plasma] kwin	Reporter:	daron439
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

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.