The sound card has internal routing, a hardware feature which can be useful on a non-Linux OS. Under JACK, this routing, enabled at power on, gets in the way of usual workflow; it requires the user to ...

The third line enables the digital in/outs on the Fast Trac Pro. # I have not tested or played much ... Instead of rebooting you can also try unloading and reloading the snd-usb-audio module by doing ...