From: Jani Nikula <jani.nikula@linux.intel.com>
To: Martin van Es <martin@mrvanes.com>,
Andrea Arcangeli <aarcange@redhat.com>
Cc: Dave Airlie <airlied@linux.ie>,
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 11:13:40 +0300 [thread overview]
Message-ID: <87y43eznbf.fsf@intel.com> (raw)
In-Reply-To: <3218621.8vMrZjKaCN@minivanes>
On Tue, 30 Aug 2016, Martin van Es <martin@mrvanes.com> wrote:
> 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?
The point is, for an ivybridge setting those parameters should not make
*any* difference.
BR,
Jani.
>
> 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
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2016-08-30 8:13 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 [this message]
2016-08-30 9:13 ` Martin van Es
2016-08-30 7:25 ` Jani Nikula
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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