Ok, so it's an old NVIDIA card using nouveau_vieux. Assuming that these logs are not from the frozen state, can you log in to the machine using ssh and then run apport-collect again while X is hung? Better yet, if you could try to get a backtrace:
https://wiki.ubuntu.com/X/Backtracing ** Package changed: xorg (Ubuntu) => xserver-xorg-video-nouveau (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/854985 Title: Freezes computer using a lot CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/854985/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
