linux-kernel - Re: PROBLEM: Intel VGA output busticated on 4.3-rc2 (regression)

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Message-ID: <CADyTPEwJhVoWpq5==aBEhxQ+ccRs8WhRB6PCb6Uw_6Z2O2GiZw@mail.gmail.com>
Date:	Wed, 7 Oct 2015 11:44:56 -0400
From:	Nick Bowler <nbowler@...conx.ca>
To:	Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org
Subject: Re: PROBLEM: Intel VGA output busticated on 4.3-rc2 (regression)

On 10/7/15, Ville Syrjälä <ville.syrjala@...ux.intel.com> wrote:
> On Wed, Oct 07, 2015 at 10:29:22AM -0400, Nick Bowler wrote:
>> On 10/7/15, Ville Syrjälä <ville.syrjala@...ux.intel.com> wrote:
>> > On Tue, Oct 06, 2015 at 11:42:33AM -0400, Nick Bowler wrote:
>> >> On 9/24/15, Nick Bowler <nbowler@...conx.ca> wrote:
>> >> > Testing out 4.3-rc2, first thing I notice is that the VGA output is
>> >> > not working.  Specifically, the display is continuously powering on
>> >> > and off -- at no point is any image visible on the screen (I am
>> >> > expecting to see the console output).  The display connected to the
>> >> > HDMI output is working fine.
>> [...]
> Hmm. You said VGA has the problem, but HDMI does not. Was the problem
> happening even when you have both displays enabled at the same time, or
> just when VGA was enabled alone?

When I boot with HDMI cable disconnected, there is no change in behaviour
for the VGA output.

> I've attached two potential patches that might help. Can you give a try
> to just patch 1, and if that alone doesn't help then both patches
> together?

I will try.

Cheers,
  Nick
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