[Bug 97211] [SKL] Dell XPS 15 9550 w/HD Graphics 530 - screen wont turn on when resuming from suspend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97211

--- Comment #6 from yann <yann.argotti at intel.com> ---
(In reply to Mads from comment #5)
> Tested again with this version of drm-intel-nightly:
> 
> commit 5b633f423e27af3a7f30d303e243f5a2e82917ae
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Tue Oct 18 14:27:24 2016 +0100
> 
>     drm-intel-nightly: 2016y-10m-18d-13h-24m-11s UTC integration manifest
> 
> and then booting with intel_iommu=igfx_off (because of
> https://bugs.freedesktop.org/show_bug.cgi?id=98309). Now suspend works!
> 
> Is this still a bug?

This is still a bug because dmar_map_gfx is on by default on SKL and igfx_off
is disabling explicitly

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