Bug 486954

Summary:	Discarding changes to the SDDM KCM causes reproducible crash.
Product:	[Applications] systemsettings	Reporter:	Roke Julian Lockhart Beedell <4wy78uwh>
Component:	kcm_sddm	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	REPORTED ---
Severity:	crash	CC:	kde, kde, krinpaus
Priority:	NOR	Flags:	4wy78uwh: performance-
Version:	6.0.4
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
URL:	https://bugzilla.redhat.com/show_bug.cgi?id=2272193#c12
See Also:	https://bugs.kde.org/show_bug.cgi?id=486953 https://bugzilla.redhat.com/show_bug.cgi?id=2272193
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Depiction of the problem. GDB log.

Description Roke Julian Lockhart Beedell 2024-05-13 11:53:03 UTC

SUMMARY
Discarding changes to the SDDM KCM causes reproducible crash.

STEPS TO REPRODUCE
1.  Invoke `kcmchell6 kcm_sddm`.
2.  Enter the "Behaviour" page.
3.  Modify the auto-login functionality (as an example).
4.  Discard modifications.

OBSERVED RESULT
Crash.

EXPECTED RESULT
The modifications should be discarded.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 40
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Kernel Version: 6.8.9-300.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
Memory: 30.5 GiB of RAM
Graphics Processor: AMD Radeon RX 5700
Manufacturer: ASRock
Product Name: X670E Taichi

ADDITIONAL INFORMATION
https://bugzilla.redhat.com/show_bug.cgi?id=2272193#c12

Comment 1 Roke Julian Lockhart Beedell 2024-05-13 12:18:36 UTC

Created attachment 169436 [details]
Depiction of the problem.

Comment 2 Roke Julian Lockhart Beedell 2024-05-13 12:38:39 UTC

Created attachment 169437 [details]
GDB log.

https://wim.nl.tab.digital/s/95qaqGtxPfaDbFA

Comment 3 Roke Julian Lockhart Beedell 2025-01-23 23:03:47 UTC

(In reply to Roke Julian Lockhart Beedell from comment #2)

It doesn't appear to crash anymore, and the general weirdness regarding inability to save and configurations reverting that I used to experience in that KCM also appear to be gone:

> ~~~YAML
> Operating System: Fedora Linux 41
> KDE Plasma Version: 6.2.5
> KDE Frameworks Version: 6.10.0
> Qt Version: 6.8.1
> Kernel Version: 6.12.9-200.fc41.x86_64 (64-bit)
> Graphics Platform: Wayland
> Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
> Memory: 30.4 GiB of RAM
> Graphics Processor: AMD Radeon RX 5700
> Manufacturer: ASRock
> Product Name: X670E Taichi
> ~~~

Worth closing as WORKSFORME, or should the trace be looked at first? I'm in no rush.