I'm experiencing the same issue on Ubuntu 12.04 LTS, running Unity 3D and the onboard Ivy Bridge GPU (Intel HD 4000). Symptoms: Desktop freezes, no response from mouse or keyboard, can't change TTY, Magic SysRq not working. Complete freeze.
Affected system: Intel Core i7 3770K 3.5 GHz Asus P8Z77-V Deluxe -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 64bit completely freezes frequently To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/993187/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
