reading from the screenshot you already have system:capture_1,2 connected to Qtractor:Master/In_1,2. that's perfect. however what you mean is that you don't get any signal from those lines, right?
a. try using alsamixer to tweak the capture controls (mic) up; maybe better to run from a console/terminal as alsamixer -cN, with N=0, 1, 2, ... being the sound-card slot number in effect on your system (probably N=0 for the internal on-board device and N=1 for the Scarlet via USB).
b. besides that, check on the actual hardware box, front-panel and/or rear-panel, whether there are any hints or controls to get the actual Mic line signal in.
reading from the screenshot you already have system:capture_1,2 connected to Qtractor:Master/In_1,2. that's perfect. however what you mean is that you don't get any signal from those lines, right?
a. try using alsamixer to tweak the capture controls (mic) up; maybe better to run from a console/terminal as
alsamixer -cN, with N=0, 1, 2, ... being the sound-card slot number in effect on your system (probably N=0 for the internal on-board device and N=1 for the Scarlet via USB).b. besides that, check on the actual hardware box, front-panel and/or rear-panel, whether there are any hints or controls to get the actual Mic line signal in.
hth.
cheers