[PATCH] i915/fbc: Disable on HSW by default for now

[Stefan Richter]

On Jun 09 Zanoni, Paulo R wrote:
> Em Qui, 2016-06-09 às 11:58 -0400, Lyude escreveu:
> > From https://bugs.freedesktop.org/show_bug.cgi?id=96461 :
> > 
> > This was kind of a difficult bug to track down. If you're using a
> > Haswell system running GNOME and you have fbc completely enabled and
> > working, playing videos can result in video artifacts.
[...]
> > For the time being, disable FBC for Haswell by default.  
> 
> In case we want to improve the commit message:
> 
> We also got reports from Steven Honeyman on openbox+roxterm, and from
> Stefan Richter.

Perhaps also worth mentioning in the changelog:
Stefan Richter reported kernel freezes (no video artifacts) when fbc is on.
(E3-1245 v3 with HD P4600; openbox and some KDE and LXDE applications,
thread begins at https://lkml.org/lkml/2016/4/26/813)
-- 
Stefan Richter
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