linux-kernel - Re: [REGRESSION] Headphones no longer working on MacPro6,1 with 4.4

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Date:	Sat, 21 May 2016 08:41:28 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Laura Abbott <labbott@...hat.com>
Cc:	Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
	"linux-kernel@...r.kernel.org >> Linux Kernel Mailing List" 
	<linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] Headphones no longer working on MacPro6,1 with 4.4

On Sat, 21 May 2016 00:27:22 +0200,
Laura Abbott wrote:
> 
> On 03/15/2016 12:49 PM, Takashi Iwai wrote:
> > On Tue, 15 Mar 2016 20:38:41 +0100,
> > Takashi Iwai wrote:
> >>
> >> On Tue, 15 Mar 2016 20:23:09 +0100,
> >> Laura Abbott wrote:
> >>>
> >>> Hi,
> >>>
> >>> We received a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1316119
> >>> that the headphone jack on a MacPro6,1 stopped working on an upgrade from 4.3
> >>> to 4.4.
> >>>
> >>> The bugzilla has the alsainfo, diffing shows that the Amp-Out vals are
> >>> different. I tried a revert of 9f660a1c4 (" ALSA: hda/realtek - Fix silent
> >>> headphone output on MacPro 4,1 (v2)") but that didn't help.
> >>>
> >>> Any ideas before asking for a bisect? Does this hardware version need to have
> >>> the vref fixup as well?
> >>
> >> The obvious difference is the power state of each node.  The recent
> >> kernel has the finer power saving mode, and this might be the cause --
> >> Mac has some secret that requires some node to be powered up.
> >>
> >> Try to power on each node via hda-verb.  For example, to power up the
> >> node 0x05, run like:
> >>   hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x01
> >
> > Oops, a typo: the last argument must be 0x00, corresponding to D0:
> >     hda-verb /dev/snd/hwC0D0 0x05 SET_POWER 0x00
> >
> >
> 
> Bringing this back again, the command that makes it work is
> 
> hda-verb /dev/snd/hwC0D0 0x10 SET_POWER 0x00
 
OK, then please give alsa-info.sh output (run with --no-upload option)
at both working and non-working cases.

> And this is still needed as of 4.5.4

Of course, nothing has changed.  I didn't hear from you since my
previous question...

I'll start checking this later in in the next week.


thanks,

Takashi