[Bug 83699] [IVB]X is sporadical no response and has *ERROR* pin & fence failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83699

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #6 from lu hua <huax.lu at intel.com> ---
(In reply to comment #3)
> A bisect would be useful, or you can just try i915.enable_ppgtt=1, or you
> can try my shotgun at
> 
> git://people.freedesktop.org/~ickle/linux-2.6 requests
> 
> (i.e. the requests branch and
> http://cgit.freedesktop.org/~ickle/linux-2.6/commit/
> ?h=requests&id=7c7dd4183286496be6c24580b6bf347ba9162d5f in particular)

Add i915.enable_ppgtt=1, run 10 cycles, it works well.
About bisect, I am not sure which branch is broken, up to now, I only reproduce
it on -nightly branch.

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