Hi, I have had this issue for a while (both in F19 and F20 -- really my only issue) on a Dell XPS 14. So, basically, after a while, and at unclear intervals, of lying in idle mode (and unrelated to any task I have been running from what I can tell), the screen goes black. Not the black that is when it it hibernated or shutdown, but a greyish black. The machine is unresponsive, however some key-presses set up by me do send it instructions to hibernate (and it does so). It does come back as if nothing happened, but for the hibernate. I wonder if this is caused by kernel modesetting (which has always been a sore point with almost everything I have had) so I was wondering if the nomodeset should be enabled? If so, how does one go about this on F20? (And of course, are there other explanations for this behavior?) There does not seem to be anything on the log files for me to clue in on. Many thanks for reading! And thanks also for any helpful suggestions!! Best wishes, Ranjan -- Important Notice: This mailbox is ignored: e-mails are set to be deleted on receipt. Please respond to the mailing list if appropriate. For those needing to send personal or professional e-mail, please use appropriate addresses. ____________________________________________________________ FREE 3D MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas on your desktop! Check it out at http://www.inbox.com/marineaquarium -- 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