Bug 476679

Summary:	On X11 with NVIDIA driver, video glitching after returning from fullscreen mpv video
Product:	[Plasma] kwin	Reporter:	benmordecai
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	nate, traceydick
Priority:	NOR	Keywords:	X11-only
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description benmordecai 2023-11-07 13:34:06 UTC

This is a very convoluted bug and it is not clear to me which specific software is responsible. The video glitching is severe  but there is an easy workaround.

STEPS TO REPRODUCE
1. Dock Konsole to the left side of the screen
2. Launch a YouTube video in mpv `mpv https://www.youtube.com/watch?v=Xo6WCp6k2-8`
3. Type f in mpv to go fullscreen
4. Type f again to return to window mode (glitching begins)
5. Undock konsole from left side of screen (glitching resolves)
6. Type f again in mpv to go fullscreen
7. Type f again to go windowed (glitch resumes)
8. Dock konsole to the left again (glitch resolves)

Operating System: Arch Linux 
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.5.9-arch2-1 (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6500 CPU @ 3.20GHz
Memory: 15.5 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2
Manufacturer: Gigabyte Technology Co., Ltd.

Comment 1 TraceyC 2025-02-24 17:58:18 UTC

Adding the x11-only keyword

Comment 2 benmordecai 2025-02-25 20:14:47 UTC

Retesting this much later, the glitch is gone. I assume it was related to nvidia drivers that have gone through several rounds of updates. We can close this.