[PATCH 1/1] drm: i915: don't use OpRegion for XPS 13 IvyBridge

[Martin van Es]

On dinsdag 6 september 2016 21:40:48 CEST Ville Syrjälä wrote:
> On Tue, Sep 06, 2016 at 01:56:20PM +0300, Ville Syrjälä wrote:
> > Actually I just cooked up another branch [2]. It just throws in some
> > memory barriers to the opregion code, and adds a a new debug print so
> > to show the response from the BIOS. I'm not too optimistic that the
> > memory barriers would fix it, but at least we'd get to see the full
> > response from the BIOS. Can you give this a try?
> > 
> > [2] git://github.com/vsyrjala/linux.git opregion_panel_type_stuff

This kernel doesn't boot (for me).

I cloned the repo, copied .config from 4.7 kernel, make oldconfig, accepted 
all defaults and made+installed the kernel. This installed an image 4.0.0-rc7+ 
(is that correct?) that was unbootable (halts at loading ramdisk).

Best regards,
Martin