Thank you @penalvch for your help and support but it was too difficult to upgrade my system as I need it and since my tools are working I didn't want to risk it at the moment. As soon as I find some time I 'll work on it.
Solution: I purged the xorg-edgers repository and downgraged all the packages to the mainline precise updates. The system seems stable now and NO hangs occur. Probably some packages were causing the errors. I should probably add the bug with an xorg-edgers tag. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234100 Title: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1234100/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
