Intel GPU hung in my NVIDIA Optimus laptop with Debian Stable KDE

[Shervin Emami]

Hi,

My KDE desktop environment crashes or freezes roughly once per day or 2,
even though I am using Debian 7.0 Stable with nearly all my software just
from the Wheezy sources including the kernel, Intel driver, NVIDIA driver
and CUDA Toolkit, except for Bumblebee and Skype and a few others.

I'm using a Lenovo ThinkPad W520 laptop that has a Quadro 1000M GPU with
Optimus technology, so my desktop environment is actually using my Intel
GPU and I use my NVIDIA GPU just for CUDA development through Bumblebee
using "optirun ...".

Plasma suddenly died on me just now (or atleast that's what I thought
happened, since my computer was still working but window decorations and
KDE start menu and similar were not visible). After looking into Xorg.0.log
I saw the error message:
    (EE) intel(0): Detected a hung GPU, disabling acceleration.
    (EE) intel(0): When reporting this, please include i915_error_state
from debugfs and the full dmesg.

At the time of this event, it happens that I was writing CUDA code and had
done my last CUDA test just 1 or 2 minutes before this crash. ie: my NVIDIA
GPU would have been off at the time of this crash, but it was on just
minutes before the crash. I am using KDE with KDM & KWin and I am using
"OpenGL" as the renderer in KWin settings, with "mesa-diverted" as my GL
library.

So where should I file my bug report, since it might be related to
Bumblebee or Intel or NVIDIA or Debian packages?


Cheers,
Shervin Emami. <http://www.shervinemami.info/openCV.html>
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