[Bug 1710750] Re: session hangs on logout

[Brian]

With only one user, if I logout, X hangs -- can't even get a console
with ctrl-alt-f3.

Also, if I need to restart X with ctrl-alt-backspace, it hangs.

I am able to ssh into the machine and restart gdm3, and that allows me
to log back in.

I added another user to see if I had a problem with a config related to
my user. Just adding another user to the system has halted the hangs. I
can now logout and restart X without issue.

I am not sure what logs to attach, because I haven't been able to find
any indication of a problem other than X hanging.

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https://bugs.launchpad.net/bugs/1710750

Title:
  session hangs on logout

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  Every session I've tried, in 17.10 (gnome, gnome classic, gnome
  wayland, budgie, cinnamon, cinnamon software rending) Hangs the system
  when I go to log out or shutdown. sometimes it completes sometimes I
  have to restart lightdm from a tty. but gnome locks the session bus
  then and a restart is required to fix it. system is ryzen 1600x rx580
  on amdgpu. I can't even find to logs, the log file viewer only holds
  logs since boot no previous boots.

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