Public bug reported: This happen on a specific install, not reproductible on a new install.
-> Lock the screen from user 'oem' -> click 'login as a different user' -> Screen flickers but login screen never appear ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gdm3 3.28.3-0ubuntu18.04.4 Uname: Linux 4.18.5-041805-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Aug 23 09:22:47 2019 InstallationDate: Installed on 2018-03-06 (534 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: gdm3 UpgradeStatus: Upgraded to bionic on 2018-06-12 (436 days ago) mtime.conffile..etc.gdm3.custom.conf: 2019-01-20T18:40:54.962138 ** Affects: gdm3 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841145 Title: Impossible de switch user from lock screen on GDM3 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1841145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs