"Switch User" fails, gives a blank screen with a mouse cursor.

[Bodinux]

On a fresh install of 18.04, switching users fails.

What doesn't work : connect as another user using the top right menu : myuserName>ChangeUser, goes to greeter, select another user, password ok, screen goes blank (violet) with mouse moving, no desktop coming up. Then Ctrl-alt-F2, log into myuserName, desktop comes back.

Upon shutdown, I am warned that the other user session is still opened.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gdm3 3.28.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri May 4 19:34:32 2018
InstallationDate: Installed on 2018-04-27 (6 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.gdm3.custom.conf: 2018-05-01T15:06:51.113672

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1766137, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

[Launchpad Janitor (janitor)]

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

[Denis (denis33)]

I have a very similar issue with Ubuntu 18.04.1. After a fresh install and creating 4 users, the "switch user" feature does not work at all. When I click on "login as another user", the screen goes blank for ~3 seconds and then comes right back to the same screen without offering to select one of the other users.

[Daniel van Vugt (vanvugt)]

Denis,

Unfortunately this bug is closed. Also the main bug 1766137 is closed as Fix Released in an update. So you will need to update your system before reporting any further bugs.

Please open a new bug for any further discussions.

[OkropNick (okropnick)]

Hi.

Unfortunately I still have this bug on full updated Ubuntu 18.04. I created account for my nephew and when I am trying to switch user when I am logged in - it doesn't work. I have to log out first. Very annoying, however still love this distribution :) I will be glad to provide more informations.

Best regards!

[SunBear (sunbear-c22)]

On several occasions, when I click on "Switch User" I would be directed to a black screen with a mouse cursor where the mouse cursor may work in a very lagging manner and nothing else seems to work(no keyboard response). To get out of this situation, I needed to manually power off my system and power it up again to boot the system up again. This recovery procedure is bad for my system.

Sometimes this bad situation happens and sometimes I would successfully be directed to the login screen to switch users successfully.

Any idea what is causing this issue or how I can fix this issue?

[Update:] On my next bootup, I re-tried using the "Switch User" button. I got the same black screen and mouse cursor. But this time around, the default Ubuntu screensaver or screen shield appeared ( after several seconds of delay) instead of the background that I had set previously. After pressing any keyboard key, the screen shield goes away and the Login screen appears. I am able to login as myself or as another user.

It was mentioned here that this situation is a duplicate of bug #1766137 and in that report a fixed had already been issued. But I still encounter this issue. There I like to reopen this issue.

[Daniel van Vugt (vanvugt)]

Please open a new bug on the affected machine by running:

  ubuntu-bug gdm3