Changing Sound Card Order (Audio newbe)

[Don Flinn]

On Wed, 2006-05-31 at 00:12 -0400, Rickey Moore wrote:
> On Tue, 2006-05-30 at 09:45 -0400, Don Flinn wrote: 
> > Thanks Andy
> > 
> > That is my problem
> > 
> > [flinn at flinn ~]$ cat /proc/asound/cards
> >  0 [CMI8738MC6     ]: CMI8738-MC6 - C-Media PCI CMI8738-MC6
> >                       C-Media PCI CMI8738-MC6 (model 55) at 0xd400, irq
> > 18
> >  1 [Headset        ]: USB-Audio - Logitech USB Headset
> >                       Logitech Logitech USB Headset at
> > usb-0000:00:10.2-2.1, full speed
> > 
> > But how do I change the order?  
> 
> Look in /etc/modprobe.conf
> 
> in mine I have:
> alias snd-card-0 snd-sbawe
> alias snd-card-1 snd-ens1371
> 
> ...that sets the order. My Soundblaster awe64 is first and my ens-1371
> is second, even though the install wanted to make the ens the first as
> it is PCI and the awe64 is old timey ISA... it just sounds ALOT better
> and I chose to make it first. 
> 
> I've not used an USB sound device, so I do not know for sure that a
> module is loaded for it at all. but if one is, then modprobe.conf
> should be the place to tell the system to load it first. Of course, I
> could be completely fricking wrong, and USB is handled different, but
> you got my troubleshooting with a shotgun approach, as well as my two
> cents. <chuckles> Ric
>    
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Rickie

I changed the subject to more accurately describe my problem.

Thanks for the pointer, however this this seems to be a static solution
rather than a dynamic solution.  I attach my USB headset with its sound
card dynamically, so I want to have my different audio applications
choose the sound card for the USB headset when it is made available and
sound card for the external speakers when the headset is not available,
i.e. not plugged in - or at least dynamically choose which card to use.

Don