Hi,
First of all, sorry my english.
I don't a expert, but i'll try to help you.
Try to change you pcm.both to this:
pcm.both {
type multi
slaves.a.pcm HDA
slaves.a.channels 2
slaves.b.pcm lifechat
slaves.b.channels 2
bindings.0.slave a
bindings.0.channel 0
bindings.1.slave a
bindings.1.channel 1
bindings.2.slave b
bindings.2.channel 0
bindings.3.slave b
bindings.3.channel 1
}
Create a pcm type route to copy every channel to channel of other sound
card.
# This to make a stereo output for both sound card
pcm.2asone {
type route
slave.pcm "both"
ttable.0.0 1
ttable.1.1 1
ttable.0.2 1
ttable.1.3 1
}
If you need converts channels, rate and format on request.
Use he to applications like xmms and others that let to change alsa
configurations.
pcm.2as1plug
{
type plug
slave.pcm "2asone"
# hint for KDE phonon
hint {
show on
description "Output to two sound cards"
}
}
If you want to make he a default:
pcm.!default {
type plug
slave.pcm "2as1plug"
# Or
# slave.pcm "2asone"
}
Maybe a pcm with dmix before pcm.both, to share the sound output for
more than one application at same time.
The shell command aplay -l will show the number of every card and the
device. Understanding this command, make easy to create pcm to share cards.
# First Sound Card
pcm.2asone_ATISB_dmix {
type dmix
# ipc_key is a unique number
# for every ALSA pcm
ipc_key 170300
# "hw:Sound-Card-Number,Device-Number"
# Sound Card Number of aplay -l
# Device-Number of aplay -l
slave.pcm "hw:0,0"
}
# Second Sound Card
pcm.2asone_ATIHDMI_dmix {
type dmix
ipc_key 170310
slave.pcm "hw:1,3"
}
If you use this pcm dmix above, you must change the pcm names HDA and
lifechat in pcm.both
If i not forgot anything, that's all.
On 07-01-2011 18:20, Mark Goldstein wrote:
> Hi,
>
> I'm trying to duplicate audio output to 2 cards.
> One card is intel HDA with VIA VT1708S codec and another
> is USB-Audio - Microsoft LifeChat LX-3000.
>
> (alsa driver 1.0.23)
>
> Following some examples in alsa wiki I created .asoundrc:
>
> =======
>
...
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