Tim: >> Or, more like this: http://imgbox.com/wgZJYJMd Ed Greshko: > This is rather old....but may be useful. > https://ask.fedoraproject.org/en/question/7503/how-do-i-enable-nouveau-vsync/ That seems to have done the trick. I haven't noticed the problem recur, so far. My google searching kept finding things for Ubuntu that lead me down the garden path. -- [tim@localhost ~]$ uname -rsvp Linux 4.13.5-200.fc26.x86_64 #1 SMP Thu Oct 5 16:53:13 UTC 2017 x86_64 Boilerplate: All mail to my mailbox is automatically deleted. There is no point trying to privately email me, I only get to see the messages posted to the mailing list. I don't think it's pure coincidence that "officialdom" sounds the same as "official dumb." _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx