[Bug 88112] [865g 3.16 regression] Desktop image is distorted

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88112

--- Comment #9 from Chris Wilson <chris at chris-wilson.co.uk> ---
If I had to guess, I would say that it was the ddx screwing up with userptr.
Slightly quicker than doing a full bisect, if you download xf86-video-intel:

$ sudo apt-get build-dep xserver-xorg-video-intel
$ git clone git://anongit.freedesktop.org/xorg/driver/xf86-video-intel

edit line 71 of src/sna/kgem.c to read:
#define DBG_NO_USERPTR 1

$ ./autogen.sh --prefix=/usr
$ make && sudo make install

And retest.

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