[Intel-gfx] [PATCH] drm/i915: Do not set "Enable Panel Fitter" on SNB pageflips

[Adam Jackson]

On Tue, 2012-04-17 at 20:37 +0100, Chris Wilson wrote:
> Not only do the pageflip work without it at non-native modes (i.e. with
> the panel fitter enabled), it also causes normal (non-pageflipped)
> modesets to fail.

Testcase: enable a GLX compositor like gnome-shell, resize X to
something other than LVDS native size, vt switch to text console, frown
at black screen of doom.

Fixes the above testcase on a Lenovo X220.

Tested-by: Adam Jackson <ajax at redhat.com>

- ajax
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