Bug 443906

Summary:	Full screen flickering when window is created or resized
Product:	[Plasma] kwin	Reporter:	Awakening <lucidsunlight>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.23.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Awakening 2021-10-17 19:37:15 UTC

SUMMARY
After updating Plasma from 5.22.5 to 5.23.0, some effects (?) cause full screen flickering 


STEPS TO REPRODUCE
! Seizure warning for videos
- Open a dialog window (e.g. Appearance - Window Decorations - Edit Breeze Theme) (https://matrix-client.matrix.org/_matrix/media/r0/download/matrix.org/aIZZyZMiBaZhyGlopwZmQGMN)
- Resize a window (https://matrix-client.matrix.org/_matrix/media/r0/download/matrix.org/aegsIwevqAKzApIJmdAXAJyM recorded with shadows enabled, still seem to happen with them disabled)
- Opening a new window

OBSERVED RESULT
Flickering

EXPECTED RESULT
No flickering

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.12-arch1-1 (64-bit)
Graphics Platform: X11
Graphics Processor: NVIDIA GeForce GTX 1060 3GB

ADDITIONAL INFORMATION
Disabling compositor works around the issue

Opening the start menu stops the flickering

nvidia-dkms 470.63.01-1

Comment 1 Awakening 2021-10-17 19:48:21 UTC

And of course, just after submitting this, tried downgrading to 5.22.5 (which didn't work out), returned back to 5.23.0, and it works fine ,_,

Comment 2 Nate Graham 2021-10-17 22:46:39 UTC

Hmm, let us know if you manage to reproduce the issue reliably!

Comment 3 Awakening 2021-10-25 15:54:25 UTC


*** This bug has been marked as a duplicate of bug 443951 ***