Public bug reported:
The user session crashes when I disconnect the DVI cable from my
computer (which I do to connect another monitor instead). A similar
problem is described in two recent questions on AskUbuntu:
https://askubuntu.com/questions/969376/how-to-keep-graphical-session-
running-in-17-
This happens to me too, starting this evening. Have not had the problems
before that, and I had not recently done any updates - to see if it
helped, I did do a large update (I'm running debian-testing and hadn't
run apt-get upgrade for a week or so), but to no avail.
As per http://jiapps.com/blog/