[kubuntu] Xorg crash

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http://ubuntuforums.org – Kernel: 3.5.0-26-generic #42-Ubuntu SMP Fri Mar 8 23:18:20 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux xorg-server 2:1.13.0-0ubuntu6.1 This is the fourth or fifth time since setting up the machine I have encountered this freeze. When it happens, my display is unresponsive. It seems that applications continue to run in the backend, and possible that I could SSH in (did not have sshd running). I am not sure if I could have killed X. I am unable to switch to any TTY with CTRL-ALT-FKEY; even though the display doesn't update I've tried to blindly login and restart the box but it does not appear to (Hardware)