[Alsa-user] Separating left and right channel as own ALSA device

[Christian Thorge Schmidt]

Hello All,

I'd like to separate my left and right channel on hw:0,0 each as a separate
device so that my Intel HDA single-channel card can actually play two (mono)
streams simultaneously using mplayer and/or mpd.
This does work when using jackd (system:playback_1 and system:playback_2
play out on left and right channel, nicely separated) but I'd like to forgo
on jackd as it makes a funny scratching noise every few seconds on these
cheap soundcards (read: with my low knowledge on the probably superb jackd
:).

Does anyone have an idea on how to accomplish this?

Thanks in advance,
 Christian.
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[Alsa-user] How to use the multiple outputs on intel-hda ALC888 / MSI Wind PC (desktop)

[Christian Thorge Schmidt]

Hello everyone,

I have an MSI Wind PC (the new desktop, not the nettop). There is an
Realtek ALC888 soundchip in it which has three output jacks in the
back and one in the front:

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
Definition Audio Controller (rev 01)

alsamixer recognizes these controls:
Master, Headphone (which, correctly, turn the front-out on and off),
Front, (...), Center, LFE, Side, (..).

Now, from my previous Soundblaster Live!24 PCI cards I was used to
having three outputs per card (hw:0,0, hw:0,1 and hw:0,2). The ALC888,
eventhough it has multiple output jacks in the back, only has hw:0,0 .
mplayer for example yields an error when trying to play out on hw:0,1
.

There seems to be only one player device, which would explain why I
can only use one ;) :

[EMAIL PROTECTED]:~# ls /proc/asound/card0/
codec#0  id  oss_mixer  pcm0c  pcm0p  pcm4c

I have tried the magic of The Google and Them Wiki's - bit to no avail.

Is there a way of making the other outputs work so that I can play two
or even better three different songs on different outputs?

Thanks in advance for pointing me in the right direction,
 Christian.

PS. From also looking at an ALC886 on another mainboard this multiple
outs, but only hw:0,0 seems to be an intel-hda thingy?!

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