linux-kernel - Re: [alsa-devel] Headphone output doesn't work with 3.0.0-rc* anymore

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Date:	Thu, 09 Jun 2011 08:09:18 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	LKML <linux-kernel@...r.kernel.org>, alsa-devel@...a-project.org
Subject: Re: [alsa-devel] Headphone output doesn't work with 3.0.0-rc* anymore

At Wed, 8 Jun 2011 19:48:55 +0200,
Michal Hocko wrote:
> 
> On Wed 08-06-11 18:03:24, Takashi Iwai wrote:
> > At Tue, 7 Jun 2011 20:05:58 +0200,
> > Michal Hocko wrote:
> > > 
> > > Hi,
> > > before 3.0.0-rc1, when I plugged anything into headphone output of my
> > > laptop, speakers were disabled and the sound has been routed to the
> > > headphone output. This doesn't seem to work anymore starting with
> > > 3.0.0-rc1. Speakers stay on even if I plug something to the headphone
> > > output.
> > > Is this a bug or a new behavior that userspace has to cope
> > > with?
> > > 
> > > I am sorry for the lack of information but I have no idea what to
> > > provide.
> > 
> > Please give alsa-info.sh output at best.  Run it with --no-upload
> > option, and attach the output file.  This will contain most of
> > necessary information.
> 
> See attached. I have added also .39 output where things work as expected
> (just in case it could be useful).

Thanks, that's helpful.
As a quirk solution, could you try to pass model=auto option to
snd-hda-intel module?  You may need to adjust the mixer after changing
this, but it should provide the full (even better) functionality.
It'll support also the auto-mic jack switching.

If auto-parser works with this hardware, we don't need to debug the
old code but just switch to the auto-parser statically in the driver.


thanks,

Takashi
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