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

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Message-ID: <20110610085117.GA4110@tiehlicka.suse.cz>
Date:	Fri, 10 Jun 2011 10:51:17 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Takashi Iwai <tiwai@...e.de>
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

On Fri 10-06-11 10:14:13, Takashi Iwai wrote:
> At Fri, 10 Jun 2011 09:56:40 +0200,
> Michal Hocko wrote:
> > 
> > On Fri 10-06-11 08:53:01, Takashi Iwai wrote:
> > > At Thu, 9 Jun 2011 13:14:01 +0200,
> > > Michal Hocko wrote:
> > > > 
> > > > On Thu 09-06-11 11:44:41, Takashi Iwai wrote:
> > > > > At Thu, 9 Jun 2011 11:28:26 +0200,
> > [...]
> > > > > BTW, does my patch fix the problem when you load without model=auto?
> > > > 
> > > > I have just booted to the rc2 with the patch (https://lkml.org/lkml/2011/6/9/25)
> > > > and it looks it didn't solve the problem. Playback works only from
> > > > speakers when headphones are not plugged in - no sound if plugged in.
> > > 
> > > So, the auto-mute now works but now the headphone doesn't work.
> > > Weird...  Maybe the same reason the speaker doesn't work with
> > > auto-mode.  I saw that the only one converter keeps the stream in your
> > > alsa-info.sh output although multiple converters (0x02, 0x03, 0x06)
> > > should be used simultaneously.
> > > 
> > > > See alsa-info.txt-fresh-boot. Same thing happens if I 
> > > > modprobe -r snd-hda-intel and then load it again (without any parameters).
> > > > 
> > > > > If yes, does the problem appear with it?  I.e. is the silence problem
> > > > > specific to model=auto or not?
> > > > 
> > > > If I try to modproble with model=auto I get headphones working but not
> > > > output from speakers. Have a look at alsa-info.txt-modprobe_auto.
> > > 
> > > For testing, just copy 2.6.39/sound/pci/*.[ch] into 3.0 tree and
> > > rebuild.  
> > 
> > OK, I git checkout v2.6.39 -- sound/pci/*.[ch] (see the patch bellow for
> > reference). I have kept the earlier patch.
> 
> Gah, sorry, a wrong path.  It must be sound/pci/hda/*.[ch].
> Also, please remove my previous patch.  It's irrelevant with 2.6.39
> although it should be harmless.

OK, I have reverted the whole hda directory to 2.6.39 which means AFAIU
that the driver is at the same state as it was in that kernel. And the
sound really works. Both outputs are active whem they should be.

I have attached alsa-info output while mplayer is running.

> Regarding the missing speaker-output on model=auto: I found the
> culprit.  The current auto-parser for ALC262 doesn't probe the
> secondary DAC.  So, it's a logical bug.
> I'm going to fix this for 3.1.  From now on, let's keep tracking only
> the issue without model option.

OK
-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic

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