(In reply to comment #107)
> (In reply to comment #106)
> > (In reply to comment #104)
> > > I'm not sure my problem is related to this bug.
> > 
> > Most likely it isn't - gpu hang is similar to an application crashing.
> > Please file a new bug report and don't forget to attach the error state
> > file. That's the first thing we need to triage the bug.
> > 
> > And of course list the versions of all the userspace driver parts (mesa,
> > ddx, ...) since like a normal application crash most often it's not a kernel
> > bug, but a bug in the render commands submitted by userspace to the gpu.
> 
> Why userspace drivers can breaking render and calling error in kernel part
> of driver? May be can add "filter" sent commands and ignore (or other
> reaction, but not execute their) their?

The GPU is a full Turing complete computational engine (in fact, lots of
them coupled in parallel and in series), see http://xkcd.com/1266/

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https://bugs.launchpad.net/bugs/1140716

Title:
  [regression] 3.5.0-26-generic and  3.2.0-39-generic GPU hangs on
  Sandybridge

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