Hi,
if the USB device id is different for the two usb devices then you might
just write a custum udev-rule that loads the snd-usb-audio module with
different card index parameters..
Regards,
FPS
On 12/8/2020 4:16 PM, Bill Purvis wrote:
  I'm trying to put together a church organ, using
two midi keyboards.
 Unfortunately, they both
 power on as channel 0. I can easily interpose a bit of jack code that
 changes the channel
 but I currently have no way of knowing which is which. They don't appear
 to send any useful
 information like serial number, and all I can rely on is that they will
 always be plugged
 in to the same slot each time (as it's all going to be cased up). I can
 put them on different
 USB Hubs if that is helpful. Any suggestions welcomed.
 Bill
 
--
https://fps.io