Hello, I have the same problem here with a freeze of all the screen except the cursor.
I have nvidia optimus handling a Geforce 520M and an intel video chip. uname -a : 3.5.0-26-generic #40-Ubuntu SMP Tue Feb 26 19:57:24 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux dmesg : [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off atl1c 0000:07:00.0: vpd r/w failed. This is likely a firmware bug on this device. Contact the card vendor for a firmware update. attachement : /sys/kernel/debug/dri/0/i915_error_state ** Attachment added: "i915_error_state-2013-03-04" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/946899/+attachment/3557453/+files/i915_error_state-2013-03-04 -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to a duplicate bug report (644740). https://bugs.launchpad.net/bugs/946899 Title: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/946899/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
