Have you ever get a look of this bug report? https://bugs.launchpad.net/ubuntu/+bug/368461 I've opened it. I think that there are more than one thing that cause a X crash. I've seen tree type of different crash (maybe four). As I write in #368461: (1) system freeze, the screen propose the last seeing, the mouse can move, pc don't respond with keyboad, ssh on (and safely reboot). This behaviour is related to this bug (2) the screen become black and the pc don't respond at all: no mouse, no keyboard, no ssh (hard reboot). This is related to #368461 (3) just a crash of kdm. Then I can login into kdm-login-interface and the pc is up. I've try to catch a backtrace when system crash by installing libgl1-mesa-dri-dbg libc6-dbg xserver-xorg-core-dbg xserver-xorg-video-ati-dbg packages but nothing.
-- Kubuntu freezes when desktop effects are enabled https://bugs.launchpad.net/bugs/351990 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