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

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Hi Andrea,

I'd be happy to test, but what am I testing when applying these boot 
parameters? In other words: what should I report?

And just to be sure, I THINK I own an IVB but intel is not very vocal about it 
when searching for familyname. I have a

vendor_id       : GenuineIntel
cpu family      : 6
model           : 58
model name      : Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz
stepping        : 9
microcode       : 0x17

Regards,
Martin

On maandag 29 augustus 2016 20:48:43 CEST Andrea Arcangeli wrote:
> On Mon, Aug 29, 2016 at 10:24:38AM +0300, Jani Nikula wrote:
> > If it's an Iybridge, there's no low vswing, and that explanation is
> > false. You can verify by trying i915.edp_vswing=1 or i915.edp_vswing=2
> > on an unpatched kernel.
> 
> CC'ed Martin who filed the bz, he can reproduce too
> https://bugzilla.kernel.org/show_bug.cgi?id=151731
> 
> Since you can reproduce would you have the time to test the two above
> options on stock 4.7.x/4.8-rc and help tracking this down? I'm afraid
> I won't be able to test it today and I'll be mostly offline for a week
> starting tomorrow.
> 
> Thanks,
> Andrea
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