Okay, plugged the midi keyboard into the rear USB-A port in the back. Then booted and everything booted fine. then I connected and input 'lsusb', and the terminal replied:
Bus 001 Device 002: ID 1235:0011 Novation EMS
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
then 'amidi -l':
No sound card found
EDIT: I have just tried this procedure with a different midi device and everything works, It must be Novations drivers.