[alsa-devel] Plugging in headphones doesn't mute speakers, internal microphone does not work

[Takashi Iwai]

At Tue, 3 Mar 2009 15:18:13 -0200,
Emilio López wrote:
> 
> Hi,
> 
> 'Side' is the subwoofer on my laptop (my laptop has an integrated subwoofer,
> believe it or not.

Hmm, then it's a wrong assignment.  "Side" shouldn't be LFE.

> Acer calls it "Tuba cinebass" or something like that).
> Apart from that, the PC has a headphones/SPDIF jack, so I believe it supports
> 7.1?

No, it's totally irrelevant.
(SPDIF is 2-channel only, BTW.  Multi-channel is done via compressed
 formats, but the physical channels are only two.)


Takashi

> 
> 2009/3/3 Takashi Iwai <tiwai at suse.de>
> 
>     At Mon, 2 Mar 2009 21:46:04 -0200,
>     Emilio López wrote:
>     >
>     > 2009/3/2 Takashi Iwai <tiwai at suse.de>
>     >
>     >     At Sat, 28 Feb 2009 14:38:10 -0200,
>     >     Emilio López wrote:
>     >     >
>     >     > Hello,
>     >     >
>     >     > This is my first mail to the list, I hope you can help me. I have
>     been
>     >     > talking with people on #alsa, but they couldn't help me, so that's
>     why
>     >     > I'm writing to you.
>     >     >
>     >     > Well, as lspci says, my Acer Aspire 6930 laptop has an "Intel
>     >     > Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)".
>     With
>     >     > this card, and without adding any mode=... to
>     >     > /etc/modprobe.d/alsa-base, playback works perfectly, but when I
>     plug
>     >     > in headphones, the integrated speakers do not mute. I can mute the
>     >     > speakers muting "front" and "side" and use the headphones, but it
>     >     > should be automatic.
>     >     >
>     >     > Setting mode=auto makes the headphones, when plugged, mute the
>     >     > speakers. But the problem with this is, that when using the
>     speakers,
>     >     > I only get sound from the speaker that was "front" in the other
>     mode.
>     >     > The microphone does not work in this mode either.
>     >     >
>     >     > I also tried other modes, including (but not limited to) acer,
>     >     > acer-aspire. I ran alsa-info.sh, here is the URL:
>     >     > http://www.alsa-project.org/db/?f=
>     >     7910da439e8e190a8c2a6f18167d4879c74881c9
>     >     >
>     >     > And before I forget, regarding the microphone, if I plug an
>     external
>     >     > one on the microphone plug, I can record. And I tried the internal
>     one
>     >     > on windows, and it works, so I believe it's an alsa problem.
>     >     >
>     >     > Looking forward to hearing from you!
>     >
>     >     Could you check the very latest sound git tree or alsa-driver
>     snapshot
>     >     below, first without model option?
>     >      git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
>     >      ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/
>     >     alsa-driver-snapshot.tar.gz
>     >
>     > Hi,
>     >
>     > I tried with the alsa-driver snapshot without any model option, and now
>     the
>     > headphones mute the speakers. But the internal microphone doesn't still
>     work,
>     > and 'Side' doesn't output sound like it did before, even if it's unmuted
>     and
>     > with volume at 100% (with the old version and without any model option,
>     it
>     > worked)
>    
>     What "Side" volume would do exactly?  It's for 7.1 output.
>     Does the machine have 7.1 output?
> 
>     Takashi
> 
>