On 05/18/2018 04:56 PM, dep wrote: > well, things went *mostly* well with the upgrade. but this evening a started > getting *many* segfaults re. artsd, at the rate of one every few seconds. > each throws a window that grabs focus, making impossible even to see what's > going on. we're talking hundreds of them. i can't even logout! Can't help you with the segfaults, but to shut it down you should be able to ctrl-alt-F2 to a shell, login, and 'init 6' to reboot. Just in case you didn't already know that.