I forgot to mention another symptom. Sometimes a warning box would pop up near the bottom of my screen, and then go away. I think it popped up when a screen-save was about to fire, so I didn't see it very often. It said: Unable to Lock: lock was blocked by an application Stupidly, the message doesn't say what program is generating this. Grrr. I guess it is one of the two competing screen locking facilities (ordinary Gnome and Cinnamon). -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org