[linux-audio-user] multiple usb midi devices confusion

[Pedro Lopez-Cabanillas]

On Monday 27 December 2004, Atte André Jensen wrote:
> Now the next problem is that my usb devices seem to show up different
> depending on the order they are inserted and/or the physical order in
> which they are connected to my usb-bus.
>
> I have:
> 2 x Evolution MK-249C usb midi keyboards
> 1 x Audiotrak MIDI-MATE usb midi interface
> 1 x Edirol UA-1A usb soundcard
> 1 x onboard i810 soundcard
[...]
> How do I control which order devices appear in? I would appreciate an
> explanation that I (hopefully) understand over simply "put this in your
> /etc/something".

I have a similar setup, and wrote some notes in the ALSA wiki here:
http://alsa.opensrc.org/index.php?page=MultipleUSBAudioDevices

Hope it will be useful for you, in addition to the other links already posted 
in this list.

Regards,
Pedro