Bug 512936

Summary:	Small stutter / flicker at the end of the slide animation, when switching a virtual desktop
Product:	[Plasma] kwin	Reporter:	postix <postix>
Component:	effects-various	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	xaver.hugl
Priority:	NOR
Version First Reported In:	6.5.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Screen Recording

Description postix 2025-12-04 12:34:55 UTC

SUMMARY

When switching a virtual desktop, there's a small stutter or flicker at the very end of the slide animation, when the animation has finished.

It's noticeable when using the default 50% animation speed, most noticeable when using slowest and not visible, when using no / instant animations.

STEPS TO REPRODUCE
1. Slide to the left/right or slide top/bottom

OBSERVED RESULT
When animation has finished in principle, the screen's content oscillates very briefly in the same direction of the slide for a few pixels, looking a like tiny flicker / stutter.

I can upload a video recording later if needed.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20251127
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.9-1-default (64-bit)
Graphics Platform: Wayland
Graphics Processor: AMD Radeon RX 580 Series

Comment 1 Zamundaaa 2025-12-05 14:50:34 UTC

Can't reproduce, the animation looks smooth to me until the end.

Comment 2 postix 2025-12-05 15:40:23 UTC

Created attachment 187362 [details]
Screen Recording

Here's a screen recording, slowed down by factor of 8. I will checkout git master later this weekend.