Kde plasmashell started crashing on leap 15.6

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1

since an update in early February, plasmashell has been crashing a lot for me.

it usually happens right after I unlock the screen, after it has been off for a few hours. the system is always up, no sleeping / hybernation but the screen is set to power off.
sometimes it crashes while I’ve been using it for a while and I happen to click on something in the taskbar.
plasmashell then crashes and restarts.

I’ve had no plasmashell crashes for many months before this started.
I’m using leap because I wanted more stability on this system!

the system is a Lenovo P360 with an nvidia RTX A2000 12GB.
I’m using the nvidia drivers.

the only error I see in the logs is:

2025-02-18T17:52:10.008013+02:00 leo plasmashell[793]: KCrash: Application ‘plasmashell’ crashing…

I opened a bug: 1238449 – plasmashell crashes usually after screen unlock
but it doesn’t look like anyone has looked at it.

I used gdb to get a stack trace.
it seems to crash in a couple of different deallocate* functions under QSGRenderThread:

Thread 9 “QSGRenderThread” received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f57ed9ff6c0 (LWP 3652)]
0x00007f588e1eb5f0 in QSGAreaAllocator::deallocateInNode(QPoint const&, QSGAreaAllocatorNode*) () from /usr/lib64/libQt5Quick.so.5
(gdb) where
#0 0x00007f588e1eb5f0 in QSGAreaAllocator::deallocateInNode(QPoint const&, QSGAreaAllocatorNode*) () from /usr/lib64/libQt5Quick.so.5
#1 0x00007f588e1eb67b in QSGAreaAllocator::deallocate(QRect const&) ()
from /usr/lib64/libQt5Quick.so.5
#2 0x00007f588e1f2f17 in ?? () from /usr/lib64/libQt5Quick.so.5

(leap 15.6 seems to have an outdated debuginfo file for plasmashell-workspace so I can’t get a good stack trace.)

any ideas? is this happening to anyone else?
btw. I zapped all my .config etc files and started fresh but it still crashes.

thanks

2

I’m not sure about the underlying cause here, but I’m going to recommend that you move to using Plasma 6. Hopefully, that will provide a better desktop experience for you.

https://en.opensuse.org/SDB:KDE_repositories

3

thanks, I’ll try that. I was hopping to go to SlowRoll but it’s still marked as beta.

4

I wouldn’t be too concerned about that status (re Slowroll). Reasoning explained here:

5

I use Leap along with the KDE repos, and that has worked well for my needs.

6

great, thank you

7

Post

inxi -aFz
8

thanks for looking into this but I already took @deano_ferrari’s advice and switched to plasma6.