lightdm crashed after switching users (lightdm-gtk-greeter, xfce4-screensaver)

[Sean Davis]

Running the Xubuntu Post-install test on GNOME Boxes. This is on a fresh install, first boot.

1. Create a new user
2. Lock your session (xflock4)
3. Switch user (xfce4-screensaver)
4. Log in as the new user (lightdm-gtk-greeter)
5. Log out
6. Log back in as the original user
7. The screen goes black, and the original user is logged out

I've seen this a few times with 22.10, but thought it was a weird one-off issue. Repeating the test with a new session does not seem to reproduce the issue.

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: lightdm 1.30.0-0ubuntu7
ProcVersionSignature: Ubuntu 5.19.0-21.21-generic 5.19.7
Uname: Linux 5.19.0-21-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Wed Oct 19 04:33:32 2022
InstallationDate: Installed on 2022-10-19 (0 days ago)
InstallationMedia: Xubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221018)
LightdmConfig:
 [Seat:*]
 autologin-guest=false
 autologin-user=oem
 autologin-user-timeout=0
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

[Sean Davis (bluesabre)]

Current session

[Sean Davis (bluesabre)]

Previous session

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
https://iso.qa.ubuntu.com/qatracker/reports/bugs/1993493

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.