[LAU] Many identical cards - how to keep them straight

drew Roberts zotz at 100jamz.com
Tue Mar 11 14:30:10 EDT 2008


Paul,

thank you so much for those links.

The first looks like it may solve my issue so long as I (or other parties 
really) don't rearrange the hookups.

all the best,

drew

On Tuesday 11 March 2008 13:19:24 Adam Sampson wrote:
> Paul Davis <paul at linuxaudiosystems.com> writes:
> > The usual ALSA mechanism relies on PCI id and other stuff that,
> > IIRC, is not going to distinguish between 3 identical cards.
>
> If you're using udev, you can distinguish between the cards using the
> device path, since that'll include the PCI slot number (which
> shouldn't change unless you're hotplugging PCI devices, I assume).
>
> There's a script to do it for USB devices here:
>   http://alsa.opensrc.org/index.php/Udev
>
> I've adapted it to just match regexps against the device path, so you
> can use it for PCI devices too. It seems to work for me, but I haven't
> tested it thoroughly. (In particular, I'm sitting a few miles away
> from the machine I'm testing on, so I haven't actually tried *doing*
> anything with the sound devices yet...)
>
> The script I'm using is here:
>   http://offog.org/darcs/misccode/alsa-name





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