Comment 131 for bug 1766137

9-8-018 fresh install with updates .. some user switches work, some don't logout is also crashing with irresponsive black screen. When the user switch fails, the description is slightly different from above. If the mouse pointer comes in at lower right, the user switch works. If it comes in upper right, then the mouse fails, alt-F1 etc. all do nothing, and rather than blank purple screen, I have what appears to be a successful login, but the system is completely non-responsive.

dell optiplex 755
SSd
3.16 GHZ core 2 duo