Ubuntu
gdm3 package

Blank screen after switching to gdm display manager

Bug #1672064 reported by Steven Walter
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gdm3 (Ubuntu)
New
Undecided
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Bug Description

gdm fails to start due to Ubuntu customizations. Ubuntu has modified the behavior of gnome-session such that ubuntu.session is the default. When gdm launches gnome-session to start the greeter, this results in gnome-session trying to launch unity instead of gnome-shell.

One workaround that I have proven works is to delete /usr/share/gnome-sessions/sessions/ubuntu.session with a symlink to gnome.session. This allows gdm to start up correctly and I can then login to a gnome-shell session.

Another possible workaround would be to patch gdm to launch "gnome-session --session=gnome", similarly to how /usr/share/xsessions/gnome.desktop was patched.

srwalter@brock:~$ lsb_release -rd
Description: Ubuntu 16.10
Release: 16.10

Revision history for this message
Tim Lunn (darkxst) wrote :

This is set in ubuntu-gnome-default-settings, do you have that package installed?

Revision history for this message
Steven Walter (stevenrwalter) wrote :

I did not. Installing that package does allow gdm to start up correctly. Should the gdm package depend on ubuntu-gnome-default-settings, then, since it flat doesn't work without it?

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