Bug 459728

Summary:	Intermittent tearing of panel and windows incorrectly rendered
Product:	[Plasma] kwin	Reporter:	Daniel Duris <kdebugs>
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	kde, nate, nicolas.fella, uwu
Priority:	NOR
Version First Reported In:	5.25.5
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Daniel Duris 2022-09-27 08:05:34 UTC

SUMMARY
Tearing happens often on AMD Renoir and it demonstrates itself in a weird way when panel listed apps start to jump around pixels and flashing. Then some windows won't be properly rendered and they need to be either minimized and opened again or closed (killed) to work correctly again (e.g. Firefox often).

STEPS TO REPRODUCE
1. Not sure, intermittent issues, random times

OBSERVED RESULT
Tearing, windows not displayed correctly, e.g. blank or empty

EXPECTED RESULT
Correct display, no panel tearing issues

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.25
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.15.0-46-generic (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 4800H with Radeon Graphics
Memory: 30,8 GiB of RAM
Graphics Processor: AMD RENOIR
Product Name: PROX14-AMD

Comment 1 Vlad Zahorodnii 2022-09-27 08:12:59 UTC

Can you check what mesa version your distro ships?

Comment 2 Daniel Duris 2022-09-27 11:04:54 UTC

(In reply to Vlad Zahorodnii from comment #1)
> Can you check what mesa version your distro ships?

OpenGL version string: 4.6 (Compatibility Profile) Mesa 21.2.6

$ apt-cache madison mesa-utils
mesa-utils | 8.4.0-1build1 | http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
v1.6$ apt-cache madison mesa-va-drivers
mesa-va-drivers | 21.2.6-0ubuntu0.1~20.04.2 | http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages
mesa-va-drivers | 21.2.6-0ubuntu0.1~20.04.2 | http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages
mesa-va-drivers | 20.0.4-2ubuntu1 | http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
v1.6$ apt-cache madison mesa-vulkan-drivers
mesa-vulkan-drivers | 21.2.6-0ubuntu0.1~20.04.2 | http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
mesa-vulkan-drivers | 21.2.6-0ubuntu0.1~20.04.2 | http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
mesa-vulkan-drivers | 20.0.4-2ubuntu1 | http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
v1.6$ apt-cache madison mesa-common-dev
mesa-common-dev | 21.2.6-0ubuntu0.1~20.04.2 | http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
mesa-common-dev | 21.2.6-0ubuntu0.1~20.04.2 | http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
mesa-common-dev | 20.0.4-2ubuntu1 | http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

Comment 3 Kai Uwe Broulik 2022-09-27 13:14:12 UTC

I am on Ubuntu Focal and an AMD GPU, too, and I experienced similar glitches (horrible tearing when moving windows, etc) but today those issues are gone again.

Comment 4 Nicolas Fella 2022-09-27 16:45:31 UTC

This vaguely sounds like https://gitlab.freedesktop.org/mesa/mesa/-/issues/7352

Comment 5 Daniel Duris 2022-09-29 21:28:51 UTC

(In reply to Nicolas Fella from comment #4)
> This vaguely sounds like
> https://gitlab.freedesktop.org/mesa/mesa/-/issues/7352

Yes, it sounds similar. Although tearing usually happens only around panel for me, basically it makes panel tasks jumping around in a weird way.