two sound cards, keeping their HW number

[Luke Yelavich]

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On Sat, Oct 13, 2007 at 08:48:25PM EST, defred wrote:
> Is there a way to "force" the sound devices to always have the same 
> hardware address ?

A better solution is to set the sound card you want as the default, and yes, there is a way of 
doing this without having to force a card to a perticular address.

Have a look in /proc/asound, using the ls -l command, like this:

luke at marin:~$ ls -l /proc/asound
total 0
dr-xr-xr-x 9 root root 0 2007-10-14 09:04 card0
dr-xr-xr-x 2 root root 0 2007-10-14 09:04 card1
dr-xr-xr-x 4 root root 0 2007-10-14 09:04 card2
dr-xr-xr-x 4 root root 0 2007-10-14 09:04 card3
dr-xr-xr-x 4 root root 0 2007-10-14 09:04 card4
- -r--r--r-- 1 root root 0 2007-10-14 09:04 cards
- -r--r--r-- 1 root root 0 2007-10-14 09:04 devices
lrwxrwxrwx 1 root root 5 2007-10-14 09:04 DMX6Fire -> card4
lrwxrwxrwx 1 root root 5 2007-10-14 09:04 I82801DBICH4 -> card0
lrwxrwxrwx 1 root root 5 2007-10-14 09:04 M1010LT -> card2
lrwxrwxrwx 1 root root 5 2007-10-14 09:04 M66 -> card3
- -r--r--r-- 1 root root 0 2007-10-14 09:04 modules
dr-xr-xr-x 2 root root 0 2007-10-14 09:04 oss
- -r--r--r-- 1 root root 0 2007-10-14 09:04 pcm
dr-xr-xr-x 2 root root 0 2007-10-14 09:04 seq
- -r--r--r-- 1 root root 0 2007-10-14 09:04 timers
lrwxrwxrwx 1 root root 5 2007-10-14 09:04 UART -> card1
- -r--r--r-- 1 root root 0 2007-10-14 09:04 version

This shows that I have several sound devices in this system. You can see that my onboard sound 
is an Intel card. So unless I change my default, all sound by default will be played from that 
card. The hw numbers on this machine also change, so if I wanted to ensure all my Audio came out 
my Delta 66, (M66 above), I run the following command:

asoundconf set-default-card M66

This creates the files .asoundrc and .asoundrc.asoundconf in your home directory. Note that this 
doesn't set the default system wide, so for example the GNOME login sound will still play from 
whatever soundcard is at 0, but this should help you ensure you get the audio from your apps 
through the card you want.

I also believe the asoundconf-gtk package has similar functionality, wrapped into a GUI.

Hope this helps.
- -- 
Luke Yelavich
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Email & MSN: themuso at themuso.com
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