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

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Date:	Thu, 9 Jun 2011 11:06:07 +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 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).
-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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