I think I have the same bug here. Crashes occur occasionally when I open video files in totem. Mouse still moves, but nothing else. Pretty much the same as the original poster. I'll attach some of my files here in case they help.
** Attachment added: "Xorg.0.log.old" http://launchpadlibrarian.net/15908079/Xorg.0.log.old -- xorg freezes while starting tvtime https://bugs.launchpad.net/bugs/200220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
