BIOS update didn't help. I worked with Blender, and it freezed. I switched to terminal (sometimes it freezes whole computer, this was not this case) and killed X server manually. In X log is the same error as before.
Here is output from desired command: BAP6710H.86A.0079.2012.0622.1722 06/22/2012 and Xorg log is attached. ** Attachment added: "Xorg.0.log.old" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1365362/+attachment/4196206/+files/Xorg.0.log.old -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1365362 Title: 10de:1080 [Intel DP67DE] Xorg Backtracing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1365362/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
