/dev/dsp

[Jonathan Hudson]

On Sat, 22 Dec 2007 17:04:06 -0400
Murry Brown <murraybr at nbnet.nb.ca> wrote:

> Go easy on me , I'm new. (linux only)
> I am running Ubuntu 7.10, I have 2 soundcards, one onboard AC97 and a 
> PCI Ensonique (soundblaster)
> One is designated /dev/dsp and the other is /dev/dsp1. Normal
> If I shutdown and restart or reboot the computer the cards will swap 
> designations.
> Eg. the AC97 was /dev/dsp and will now be /dev/dsp1 and the PCI card 
> does likewise, it would go from /dev/dsp1 to /dev/dsp.
> I have to go through my Amateur Radio software and keep changing 
> soundcard selections.
> How can I stop this?
> Thanks.
> Murry

Set the load order in /etc/modprobe.d/alsa-base. See 
<http://alsa.opensrc.org/index.php/MultipleCards>, in particular the
section entitled "Easy way to do this on Ubuntu Edgy" (which works for
later versions as well).

Then run 

sudo depmod -a 

and reboot (well, you could manually unload and reload stuff, but a
reboot is probably easier).

-jh