Have the same problem - system freezes completely, only way out is a hard reboot :( It's random, often while doing Shotwell, sometime Google Earth, few times even while ejecting a SD drive! I also had a few random warnings that Compiz crashed (maybe related ?!).
Here are my specs: Brand new Desktop from System76 Ubuntu 12.04 LTS 64 bit Kernel: 3.2.0-26-generic 3rd Generation Intel Core i5 3570K ( 3.40GHz - 6MB cache - 4 Cores - HD Graphics 4000 ) 8 GB DDR3 - 1600 MHz 2 Tb HDD -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+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