Bug 468464

Summary:	Black screen with mouse pointer on logout: Did the X11 server die? Did the Wayland compositor die?
Product:	[Plasma] plasmashell	Reporter:	postix <postix>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	fabian, kde, nate
Priority:	NOR
Version First Reported In:	5.27.4
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description postix 2023-04-13 11:18:23 UTC

SUMMARY

Since some recent upgrade (`zypper dup`) when logging out, it _may_ happen, that instead to facing SDDM, only a black screen with working cursor shows up. 

```
13:03:19 dbus-daemon[2059]: [session uid=1000 pid=2059] Successfully activated service 'org.kde.Shutdown'
13:03:19 kded5[2250]: X connection to :1 broken (explicit kill or server shutdown).
13:03:19 kaccess[2429]: The X11 connection broke (error 1). Did the X11 server die?
13:03:19 systemd[1993]: app-kaccess@autostart.service: Main process exited, code=exited, status=1/FAILURE
13:03:19 systemd[1993]: app-kaccess@autostart.service: Failed with result 'exit-code'.
13:03:19 kwin_wayland[2077]: QtDBus: cannot relay signals from parent QObject(0x55e8460d68f0 "") unless they are emitted in the object's thread QThread(0x55e845f5f108 "libinput-connection"). Current thread is QThread(0x55e845d9d060 "").
13:03:19 xdg-desktop-por[2107]: Error reading events from display: Datenübergabe unterbrochen (broken pipe)
13:03:19 kded5[2195]: The Wayland connection broke. Did the Wayland compositor die?
```

Unfortunately I do not have any more hints. Coredumpctl does not report any related crash dump.
I can still login in a different tty, but it seems all I can do to recover is to reboot.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20230411
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.8
Kernel Version: 6.2.9-1-default (64-bit)
Graphics Platform: Wayland
SDDM: 0.19.0-10.1

Comment 1 Nate Graham 2023-04-13 19:51:47 UTC


*** This bug has been marked as a duplicate of bug 467547 ***

Comment 2 Fabian Vogt 2023-04-14 07:07:55 UTC

(In reply to Nate Graham from comment #1)
> 
> *** This bug has been marked as a duplicate of bug 467547 ***

Unfortunately not.

Only Fedora was affected by bug 467547 (due to PAM configuration) and on top of that the sddm-0.19.0-10.1 package in openSUSE has the fix.

Comment 3 postix 2023-04-14 12:41:38 UTC

Well, after having faced the issue several times across multiple reboots, it seems now to have gone (openSUSE Tumbleweed 20230413).