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

Andrea Arcangeli aarcange at redhat.com
Mon Aug 29 18:48:43 UTC 2016


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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