This time the USB audio device was not connected, and I was using compiz, and the mouse cursor did not move, but the other symptoms were the same (console-switching worked, and music continued to play until the end of song, and then stopped - infinite playlist). There are some similar messages at the end of the xorg.log, but maybe those are just something about the console-switching after the lockup. not sure, since I left that machine for many hours before looking at the log... this time I am going to use xfwm4, for lack of any other suggestions...
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/24135478/Xorg.0.log -- X stops responting/updating, console switching still works https://bugs.launchpad.net/bugs/338495 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