A possible example usage
Hello,
I'm a long time Linux sysadmin.
I use Linux only systems.
I use Ardour for recording, I'm a guitar player.
What kind of assistance you need?
Your question is a bit vague, what software are you using?
I'll try and put as simple as I can.
When you plug a USB device in a laptop running Linux, the kernel (which is Linux) will recognize the device or not.
That's the first thing you want to be sure of and you do that tailing the system logs before plugging the USB, then plug it in and you should see logs appearing.
It should become another audio card in your system.
If you use Ardour, then you know it's based on Jackd.
If it's your case use Qjackcontrol or Cadence for starting it.
I use qjackcontrol on my Thinkpad T430 and a Audiobox96.
Before running Ardour, open it, then choose Setup and check your card is there and it's selected, adjust sample rate etc. .
Choose 'Connect' and check your jackd connections, in the case of an Audiobox96, under the Audio tab of Connections box you'll see cature1 and 2, check the other tabs for MIDI, etc.
Start it and start Ardour.
If you don't do that, and start Arduor then jackd will be started by Ardour but you'll use wth settings that could be wrong for particular setup.
I hope that helps you and other Linux users.
Which is a great choice IMO.