> this is a hard freeze :-( usually what happens is the X server exits, leaving the video hardware displaying whatever it was at the time. So the mouse doesn't move the cursor, and you can't ctrl+alt+f1 (because no X server is listening for that key combo.) However, it's only X that's affected. If you have another computer you can ssh in from, you can shut down cleanly. Or Alt+sysrq+r to take the keyboard out of "raw" mode, so e.g. ctrl+alt+delete should shut down cleanly. or hold alt+sysrq and hit s, then u, then b. (to sync, umount, and reboot.) The power button should also shut down cleanly.
When X crashes like this, restarting it is no good. The video hardware is in some weird state and only re-POSTing will help, which only happens on a reboot or when coming back from a suspend/resume. -- drm lockups on g965 hardware https://bugs.launchpad.net/bugs/104673 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs