Date: Mon, 4 Dec 2017 13:33:52 -0500
From: Nick Bowler <nbowler@draconx.ca>
To: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        Dave Airlie <airlied@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: PROBLEM: Asus C201 video mode problems on HDMI hotplug
 (regression)
Message-ID: <CADyTPExkp2s24hrpYhuT6r8LpECaPHD6G2Acqw2vXonawAKMWA@mail.gmail.com>
References: <CADyTPEyatxOS0z3-4fapUiuxhPsp0985YcQvgFvdp_Pesm1idg@mail.gmail.com>
 <20171116062811.g27zgeejizfxu6oc@aura.draconx.ca>
 <269ce21a-3685-30e8-fcc8-65070bc59eea@codeaurora.org>
 <13872912.d01MB1IQ9u@avalon>
 <20171128033044.bw4jwps2gya2vbig@aura.draconx.ca>
 <20171201001146.fezhkf5c3zrbqjlj@aura.draconx.ca>
 <d719bb3b-551c-3c15-6b9b-3717deaa57a7@synopsys.com>
 <20171203052045.5povltrffufaic7o@aura.draconx.ca>
 <3c938f3f-fa1f-b08a-5ca5-b2044ed6fb4c@synopsys.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <3c938f3f-fa1f-b08a-5ca5-b2044ed6fb4c@synopsys.com>
User-Agent: NeoMutt/20171027
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1593
Lines: 42

On 2017-12-04 10:04 +0000, Jose Abreu wrote:
> On 03-12-2017 05:20, Nick Bowler wrote:
> > I brought the original test equipment back to the setup so I can
> > see the video and pink bar again.  The symptoms remain the same
> > (unexpected size, pink bar, and no audio).
> >
>
> Can you tell me which test equipment are you using?

I am using an XRGB-Mini Framemeister as the sink device for testing
which isn't "real" test equipment but does show details of the video
and audio mode (which the monitor I have does not do).

The normal setup of this laptop has a small "audio splitter" as
the sink, which among other things includes HDMI input and output
ports and an S/PDIF audio output.

These devices can be connected together in various ways and the
results seem to be consistent in any configuration.

> > It is very consistent: pink bar <=> no audio.
> >
> > My suspicion is that the audio problem is just the wrong video mode
> > on the sink side messing things up, but I have no way of confirming
> > that (that I know of).
>
> Hmmm, my first thought was that audio is being configured first
> because of the phy lock wait time, I've seen this happening before.
>
> Lets try this:
> - Disable all alsa clients (e.g. pulseaudio, ...) so that no one
> tries to configure audio.
> - Plug out/in the cable until the issue appears
> - When the issue appears use aplay to play audio through the HDMI
> output
> - Repeat several times with different audio rates and with no
> resample (you can use the plughw interface in aplay).

OK, I will give it a try later this evening.

Cheers,
  Nick