Comment 37 for bug 1766137

I upgraded from Ubuntu 17.10 to 18.04 and all was fine for a couple weeks. I think an update yesterday (5/7) caused the problem. I have two accounts on the system. I can initially log into either fine but switching to the other causes the purple screen with cursor only. It does not matter if I log out of the first account or switch user, either way I have the problem. The password seems to be accepted fine. It seems that the windows don't start or start correctly.

I'm using an HP dv7-2043cl Notebook