From: Jani Nikula <jani.nikula@linux.intel.com>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: intel-gfx@lists.freedesktop.org, bugs@mrvanes.com,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 1/1] drm: i915: don't use OpRegion for XPS 13 IvyBridge
Date: Tue, 30 Aug 2016 10:25:51 +0300 [thread overview]
Message-ID: <8760qisoow.fsf@intel.com> (raw)
In-Reply-To: <20160829184843.yvntxblucidbjkmq@redhat.com>
On Mon, 29 Aug 2016, Andrea Arcangeli <aarcange@redhat.com> 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.
As I tried to explain, the low voltage swing is not related to backlight
issues.
BR,
Jani.
>
> Thanks,
> Andrea
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2016-08-30 7:25 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-28 15:28 [PATCH 0/1] drm: i915: don't use OpRegion for XPS 13 IvyBridge Andrea Arcangeli
2016-08-28 15:28 ` [PATCH 1/1] " Andrea Arcangeli
2016-08-29 7:24 ` Jani Nikula
2016-08-29 13:32 ` Andrea Arcangeli
2016-08-29 15:08 ` Jani Nikula
2016-08-29 18:48 ` Andrea Arcangeli
2016-08-30 6:54 ` Martin van Es
2016-08-30 8:13 ` Jani Nikula
2016-08-30 9:13 ` Martin van Es
2016-08-30 7:25 ` Jani Nikula [this message]
2016-09-06 9:20 ` Ville Syrjälä
2016-09-06 10:56 ` Ville Syrjälä
2016-09-06 18:40 ` Ville Syrjälä
2016-09-08 10:04 ` Martin van Es
2016-09-08 10:18 ` Ville Syrjälä
2016-09-08 11:09 ` Martin van Es
2016-09-08 13:53 ` Andrea Arcangeli
2016-09-14 9:40 ` [PATCH 0/1] " Jani Nikula
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