[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 #13 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to Eugene from comment #11)
> Ok, what I've done:
> 
> $ 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
> 
> The image became fine after reboot
...
> 
> So, should I try bisect still?

It seems clear as to what the trigger is, so no bisect necessary.

Can you reset src/sna/kgem.c (i.e. reenable userptr) and compile with
./configure --enable-debug=full, reproduce and attach the Xorg.0.log (you will
need to compress it!).

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