ok, but what about the intel driver? I noticed there are several errors in the kdm.log file, too (see attachment). Last crash occurred before login, while the splash screen was displayed. The screen slowly faded and turned dark. This time I could do a restart by pressing [Alt+SysRq+B].
** Attachment added: "kdm.log" http://launchpadlibrarian.net/20879541/kdm.log -- Xorg lockup when using xserver-xorg-video-intel https://bugs.launchpad.net/bugs/312270 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