I have this problem as sell. X quits for now apparent reason and dumps me to the login screen (killing whatever was running).
ubuntu 15.10 on a Dell XPS 13 (9343) Linux mash-XPS-13-9343 3.19.0-28-generic #30-Ubuntu SMP Mon Aug 31 15:52:51 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1422137 Title: Display quits periodically Status in xorg package in Ubuntu: Expired Bug description: Display quits for about a second and the issue constantly repeats at irregular periods of time. Xubuntu 14.10 (fresh install, settings - default) ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xorg 1:7.7+7ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-30.40-generic 3.16.7-ckt3 Uname: Linux 3.16.0-30-generic i686 ApportVersion: 2.14.7-0ubuntu8.1 Architecture: i386 CurrentDesktop: XFCE Date: Sun Feb 15 17:41:27 2015 InstallationDate: Installed on 2015-02-14 (0 days ago) InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1) SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1422137/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp