Comment 9 for bug 975083

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iGadget (igadget) wrote : Re: [sandybridge-gt1] GPU lockup

Well... it just happened again while browsing Youtube videos (unfortunately I was not running GTKrecordmydesktop) and when looking at the /sys/kernel/debug/dri/0/i915_error_state file via SSH, both EIR, PGTBL_ER, and all of the IPEHR's where displaying 0x0000000.

However, before this particular lockup I a was able to record a previous lockup which manifested itself a little differently - instead of locking up the entire interface, leaving me with only being able to move the mouse, it looked more as if everything besides the root X server crashed, leaving only the bare windows of the applications visible, without any decorations. I could still interact with the applications (at least those who were on top, switching between applications no longer worked) and could also still use CTRL-Alt-F1. After rebooting the machine from there, Apport prompted me with the same lockup detection as before.

The last thing I did before this happened was dragging an application window to the right.

Anything else I can do to get this sorted out?