Bug 503189 - kwin_wayland segfault libQt6Gui.so
Summary: kwin_wayland segfault libQt6Gui.so
Status: RESOLVED WAITINGFORINFO
Alias: None
Product: neon
Classification: KDE Neon
Component: general (other bugs)
Version First Reported In: unspecified
Platform: KDE Linux Linux
: NOR crash
Target Milestone: ---
Assignee: Neon Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-04-22 19:58 UTC by m.raps
Modified: 2026-01-09 12:29 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
dmesg (7.81 KB, text/plain)
2025-04-22 19:58 UTC, m.raps
Details
dump.txt (4.05 KB, text/plain)
2026-01-06 10:06 UTC, m.raps
Details

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Description m.raps 2025-04-22 19:58:33 UTC
Created attachment 180536 [details]
dmesg

SUMMARY
Logging in to a Wayland session with KDE Plasma 6.3.4 fails and returns to the login screen.

STEPS TO REPRODUCE
1. Login to Wayland session on KDE Neon.

OBSERVED RESULT
KDE Plasma fails to start and returns to the login screen.

EXPECTED RESULT
KDE Plasma session starts.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 6.3
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.8.3
Kernel Version: 6.11.0-24-generic (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 5700G with Radeon Graphics
Memory: 31.1 GiB of RAM
Graphics Processor: AMD Radeon RX 7600


ADDITIONAL INFORMATION
Today i upgraded to 6.3.4 and cannot longer login to wayland, X11 works fine, switching back to kernel 6.8 dosent help, so i think its a Bug in kwin_wayland or QT lib.
Comment 1 Carlos De Maine 2025-05-17 11:46:43 UTC
fixed by new testing snapshot
Comment 2 m.raps 2026-01-06 10:06:01 UTC
Created attachment 188262 [details]
dump.txt

Hi Carlos,

do you know then this fix reaches my System? i still have the same error




On 2025-05-17 13:46, Carlos De Maine wrote:
> https://bugs.kde.org/show_bug.cgi?id=503189
> 
> Carlos De Maine <carlosd.kde@gmail.com> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>          Resolution|---                         |FIXED
>              Status|REPORTED                    |RESOLVED
> 
> --- Comment #1 from Carlos De Maine <carlosd.kde@gmail.com> ---
> fixed by new testing snapshot
Comment 3 Carlos De Maine 2026-01-07 00:38:55 UTC
hi.  sorry this isn't fixed yet for you..  i'll need some more info to see if something else is borked in your case.  have you upgraded to the lastest packages on you testing edition ??  have you compiled any 3rd party kwin themes or plugins??
Comment 4 m.raps 2026-01-09 12:29:11 UTC
Hi Carlos,

no iam using the stable branch, i didnt compile anything, just doing 
updates

Operating System: KDE neon User Edition
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.14.0-37-generic (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 5700G with Radeon Graphics
Memory: 32 GiB of RAM (31.1 GiB usable)
Graphics Processor: AMD Radeon RX 7600

I also tried to reinstall packages:
plasma-desktop
kwin-wayland
qt6-base
qt6-wayland

yesterday i removed my RX 7600 GPU and tried the intergrated one same 
result,
then i tried, KDE Neon Userediton live system, that worked out of the 
box

i think some update messed something up, with some libs, but i dont know 
what i should reinstall or test now