Bug 31705

Summary:	kwin_x11 randomly crashes/restarts when switching desktops
Product:	Mageia	Reporter:	Pierre Fortin <pfortin>
Component:	RPM Packages	Assignee:	KDE maintainers <kde>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	Normal
Version:	Cauldron
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:	kwin-5.27.3-1.mga9.src.rpm	CVE:
Status comment:
Attachments:	journal journal Plasma still crashing when switching desktops.

Description Pierre Fortin 2023-03-20 18:16:11 CET

Description of problem:  Fro a coule days, I've been seeing the taskbar restart when selecting a different desktop. Usually, I end up on a different desktop than the desired one; though I haven't yet recorded a pattern.  This appears to have started right after these packages were updated:

lib64kwinglutils14-5.27.3-1.mga9.x86_64       Fri 17 Mar 2023 04:41:10 PM EDT
lib64kwineffects14-5.27.3-1.mga9.x86_64       Fri 17 Mar 2023 04:41:10 PM EDT
lib64kwin5-5.27.3-1.mga9.x86_64               Fri 17 Mar 2023 04:41:10 PM EDT
lib64kcmkwincommon5-5.27.3-1.mga9.x86_64      Fri 17 Mar 2023 04:41:10 PM EDT
kwin-common-5.27.3-1.mga9.x86_64              Fri 17 Mar 2023 04:41:10 PM EDT
kwin-5.27.3-1.mga9.x86_64                     Fri 17 Mar 2023 04:41:10 PM EDT

Visually, the screens go dark very briefly; the taskbar visibly restarts.

Version-Release number of selected component (if applicable):


How reproducible: random


Steps to Reproduce:
1. click on a different desktop on the taskbar
2.
3.

Comment 1 Pierre Fortin 2023-03-20 18:16:54 CET

Created attachment 13744 [details]
journal

Comment 2 Pierre Fortin 2023-03-20 21:18:53 CET

Created attachment 13745 [details]
journal

This crash was slightly different; when the windows were restored, some were solid black. As soon as the mouse entered each, the window contents were restored as expected.

Comment 3 Lewis Smith 2023-03-20 21:55:40 CET

Thank you for the report.
Your precision about the kwin update is helpful. There was a huge number of Plasma updates at the same time, but the journal extracts certainly point to kwin.

Assigning to the KDE group.

Source RPM: (none) => kwin-5.27.3-1.mga9.src.rpm
Assignee: bugsquad => kde

Comment 4 sturmvogel 2023-03-20 22:48:52 CET

Is there a reason why you are using an old kernel (according your journal) but newer kwin versions? Was this an incomplete update? Did you restart your machine after update of kernel?

You are using kernel-server-latest-6.2.2-2.mga9 (build 2023-03-03)
You are using kwin kwin-5.27.3-1.mga9.x86_64 (build 2023-03-16)

But cauldron is already two kernel versions ahead:
kernel-server-latest-6.2.6-1.mga9.x86_64.rpm (build 2023-03-14)
kernel-server-latest-6.2.7-1.mga9.x86_64.rpm (build 2023-03-19)

So there are some inconsistencies...

Comment 5 Pierre Fortin 2023-04-28 22:03:29 CEST

This occurs almost daily; usually several times per day. Whether with above "inconsistencies"; or everything updated and freshly rebooted.

Comment 6 Pierre Fortin 2023-10-28 02:39:29 CEST

Created attachment 14112 [details]
Plasma still crashing when switching desktops.

this bug is still aggravating.  When it hits, the shell restarts and I never know which desktop I'll end up on; though usually #1
many crashes in attached log created with:
 $ journalctl -b | grep -e kwin -e plasma > journal_kwin_plasma.txt