The hang occurred after waking up from a suspend. X got as far as displaying the password prompt for screen unlock, but then it became unresponsive. Ctrl-alt-f1 did not switch to the terminal, but alt-sysrq-b did successfully reboot.
The hang occurred after waking up from a suspend. X got as far as displaying the password prompt for screen unlock, but then it became unresponsive. Ctrl-alt-f1 did not switch to the terminal, but alt-sysrq-b did successfully reboot.