Public bug reported: I am using a Radeon HD 7950 with the latest fglrx beta (catalyst 13.3). The problem, however, even happens with fglrx in Ubuntu repositories. It seems most likely to occur when I am opening a lot of windows too rapidly, although it is completely random. It is guaranteed that at some point in time the GUI will freeze. However, I have noticed that it does not freeze if not being used (I can safely go AFK for 12 hours and come back to a responsive GUI). The only fix is to move to a different tty session, sudo killall lightdm, then sudo lightdm and log back in.
ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: lightdm 1.5.3-0ubuntu1 ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5 Uname: Linux 3.8.0-16-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 Date: Tue Apr 16 03:28:00 2013 InstallationDate: Installed on 2013-04-07 (8 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130402.1) LightdmConfig: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter MarkForUpload: True ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: lightdm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug raring third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169468 Title: GUI hangs often To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1169468/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs