Bug 487936

Summary:	kde-plasma/plasma-workspace 5.27.11.1: ksmserver fails to save and later restore a session
Product:	[Plasma] plasmashell	Reporter:	i.Dark_Templar <idarktemplar>
Component:	Session Management	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	kishore96, natalie_clarius, sitter, wenzezlaus
Priority:	NOR
Version:	5.27.11
Target Milestone:	1.0
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description i.Dark_Templar 2024-06-02 21:16:36 UTC

SUMMARY
ksmserver fails to save a session

STEPS TO REPRODUCE
1. Set 'restore last session' in session control kcm.
2. Open a couple of KDE applications, like kate, konsole, dolphin
3. Logout
4. Login back

OBSERVED RESULT
Previous session is not restored

EXPECTED RESULT
Previous session restored

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.6.30-gentoo / X11
(available in About System)
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.116.0
Qt Version: 5.15.14

ADDITIONAL INFORMATION
After upgrading from plasma-workspace 5.27.11 to 5.27.11.1, plasma/x11 stopped restoring previous session. I've tried to save a specific session to restore it, it didn't work either. I've noticed that only conky out of all my opened applications was properly saved and restored. As I mentioned above, kate, konsole, dolphin failed to be saved and restored.

Comment 1 i.Dark_Templar 2024-06-02 21:36:16 UTC

Also, files /run/user/*/iceauth_* generated by ksmserver are empty, and I'm getting a lot of errors like "Qt: Session management error: networkIdsList argument is NULL". To me it looks like ICE auth is not working.

Comment 2 Vence 2024-06-03 08:55:04 UTC

confirmed:

Linux/KDE Plasma: Arch Linux/X11
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 5.2
Qt Version: 6.7.1

(bug  reported at 2024-06-02, https://bugs.kde.org/show_bug.cgi?id=487912)

Comment 3 i.Dark_Templar 2024-06-03 10:19:13 UTC

As I wrote above, file "/run/user/*/iceauth_*" is empty for me. It looks like it get's opened at https://invent.kde.org/plasma/plasma-workspace/-/blob/Plasma/5.27/ksmserver/server.cpp?ref_type=heads#L306, then it gets written and that's it. It's never flushed or closed. Closing file after writing fixed issue for me. I'm not sure this file descriptor is meant to leak.

Also I have following settings in sysctl, not sure if they help hitting this bug:
vm.dirty_bytes = 2097152
vm.dirty_background_bytes = 2097152

Comment 4 Kishore Gopalakrishnan 2024-06-03 16:04:08 UTC


*** This bug has been marked as a duplicate of bug 487912 ***