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 11:44:41 +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 Thu, 9 Jun 2011 11:28:26 +0200,
Michal Hocko wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> On Thu 09-06-11 11:20:04, Takashi Iwai wrote:
> > At Thu, 9 Jun 2011 11:06:07 +0200,
> > Michal Hocko wrote:
> > > 
> > > On Thu 09-06-11 10:56:16, Michal Hocko wrote:
> > > > On Thu 09-06-11 08:09:18, Takashi Iwai wrote:
> > > > > At Wed, 8 Jun 2011 19:48:55 +0200,
> > > [...]
> > > > > Thanks, that's helpful.
> > > > > As a quirk solution, could you try to pass model=auto option to
> > > > > snd-hda-intel module?
> > > > 
> > > > Headphones work now but speakers are quite... I have tried to play
> > > > with Headphone and Speaker controls in alsamixer but no changes.
> > > > 
> > > > Here is what I get in logs when the module is loaded:
> > > > [ 5320.360277] HDA Intel 0000:00:1b.0: PCI INT A disabled
> > > > [ 5326.920247] HDA Intel 0000:00:1b.0: power state changed by ACPI to D0
> > > > [ 5326.920262] HDA Intel 0000:00:1b.0: power state changed by ACPI to D0
> > > > [ 5326.920279] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
> > > > [ 5326.920375] HDA Intel 0000:00:1b.0: irq 42 for MSI/MSI-X
> > > > [ 5326.920405] HDA Intel 0000:00:1b.0: setting latency timer to 64
> > > > [ 5326.981085] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input18
> > > > [ 5326.981262] input: HDA Intel Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input19
> > > > [ 5326.987934] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input20
> > > > 
> > > > [maybe not important but input numbers are increasing for every new load]
> > > > 
> > > > There is another strange thing. After I stop mplayer and wait for some
> > > > time (~1min) I can hear a "click" sound and then there is no sound at
> > > > all... If I start mplayer in the meantime it just works...
> > > > If I try to remove the module and load it again then things work and stop
> > > > working after first playback again.
> > > 
> > > And I have just found out that I do not have to start any playback to
> > > see this. It is sufficient to load the module and wait a minute and
> > > there is no sound at all (both from speakers or headphones).
> > 
> > OK, could you give alsa-info.sh outputs at both working and
> > non-working states?
> 
> Sure. Attached. The only change seems to be:
>  Node 0x02 [Audio Output] wcaps 0x11: Stereo
>    Device: name="ALC262 Analog", type="Audio", device=0
> -  Converter: stream=5, channel=0
> +  Converter: stream=0, channel=0

This is OK.  It shows that the converter was assigned once to this
stream when you played back a sound before power-save.

As long as the codec registers show the same value, it's not obviously
what went wrong.  The symptom sounds like a resume issue.  If so,
S3/S4 might show the same problem.

BTW, does my patch fix the problem when you load without model=auto?
If yes, does the problem appear with it?  I.e. is the silence problem
specific to model=auto or not?


thanks,

Takashi
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