Public bug reported:
The bug presents itself the following way:
It occurs with update to gdm3 3.24.1-0ubuntu0.1. Did not happen before,
downgrade to gdm3 3.24.0-0ubuntu2 solves the problem.
My session does auto-start. After the desktop is loaded I try to switch
to another user. The screen goes black for some seconds and switches
back to the primary user. No login screen or user chooser is visible.
After trying that one time, also logout is not possible anymore. After
logout I do not see the login greeter but a black screen instead.
Ubuntu Gome 17.04
Skylake 520
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: gdm3 3.24.1-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.10.0-21.23-generic 4.10.11
Uname: Linux 4.10.0-21-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed May 17 08:28:01 2017
InstallationDate: Installed on 2016-04-21 (390 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64
(20160421)
SourcePackage: gdm3
UpgradeStatus: Upgraded to zesty on 2017-04-13 (33 days ago)
mtime.conffile..etc.gdm3.custom.conf: 2017-05-17T08:12:46.076209
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug zesty
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https://bugs.launchpad.net/bugs/1691357
Title:
User switch not possible, login screen black
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