I seem to have the same problem, same graphics card. It happens rather regularly on my laptop. About every 30-60 minutes. Super-SysRq-k usually doesn't work for me. Sometimes it does.
This problem has appeared for me unregarding of what programs i am using. Once even having all programs closed when i was about to shutdown my laptop. I usually have my laptop plugged in, i rarely work on battery power. I had this bug on a Xubuntu 12.04 i had upgraded from 11.10 and now again on the fresh install i did on the same laptop. DistroRelease: Ubuntu 12.04 InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) Package: xorg 1:7.6+12ubuntu1 PackageArchitecture: i386 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14 SourcePackage: xorg Tags: precise Uname: Linux 3.2.0-24-generic-pae i686 UpgradeStatus: No upgrade log present (probably fresh install) lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) ** Attachment added: "120504_Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993333/+attachment/3129796/+files/120504_Xorg.0.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993333 Title: [Sandybridge] Xorg freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993333/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
