Ive been searching and searching… i can’t figure out how to get my sound going on the 18i20.
Downloaded the Mixcontrol and started Cubase, selected the Focusrite USB 2.0 driver and alle the channels and connections looks alright. Ive selected the 18i20 as the default audio device in windows (playback/recording) but still no sound.
routing is “cleared” and i choose DAW tracking.
Deleted the cubase folder in Steinberg folder.
Removed the Novation 2.5 USB driver that could mess things up.
Reinstalled the Mixcontrol.
Of course restarted again and again.
Still running my M-audio Delta 44 alongside. I should be able to, right?
Sometimes when i “reset” the Focusrite USB 2.0 driver i get a short “blib” from what ever plugin i am playing in Cubase, but cuts out again. OO 
Windows 7 SP1
Focusrite Scarlett 18i20
Mixcontrol 1.8
M-audio Delta 44
EDIT : Fixed! used a USB 3.0 port. Changed to a USB 2.0 port and everything is fine. 