switch user appears to function, but machine is frozen. Logout also freezes with black screen

Bug #1791481 reported by matt scott
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gdm3 (Ubuntu)
New
Undecided
Unassigned

Bug Description

9-8-018

I suspect this is a gdm3 bug as a similar bug was reported earlier with blank purple screen. This is running a fully updated fresh install september-8-018

some switch user operations function. Others result in a successful appearance, but the machine is non-responsive. alt-f1 etc. do nothing. Also, logout results in hangup at black screen.

When the user switch works, the mouse pointer shows up bottom right. When the switch appears to work, but doesn't, the mouse pointer shows up at top right, but the machine is frozen. Also, the machine appears to pick a favored user and an unfavored user .. freezing for one and working for the other. In an earlier install, the original user was the favored user .. for current install, the second user seems to be favored and the original user unfavored. This may simply be caused by some sort of toggling effect I suppose, and have nothing to do with the user.

I am running a ubuntu 18.04 amd64 system on
Dell optiplex 755 with
core 2 duo 3.16 ghz
and an SSD

/var/crash folder is empty
/var/log/gdm3 is empty

matt@Wallace:~$ apt list gdm3
Listing... Done
gdm3/bionic-updates,bionic-security,now 3.28.2-0ubuntu1.4 amd64 [installed]
N: There is 1 additional version. Please use the '-a' switch to see it
matt@Wallace:~$ apt list gdm3 -a
Listing... Done
gdm3/bionic-updates,bionic-security,now 3.28.2-0ubuntu1.4 amd64 [installed]
gdm3/bionic 3.28.0-0ubuntu1 amd64

this appears to be regression of 1766137 from my perspective

matt scott (mgshightech)
description: updated
description: updated
matt scott (mgshightech)
description: updated
Revision history for this message
Daniel van Vugt (vanvugt) wrote :

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.

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