Game Input MultipleXer

So when I select curses and the press control f1 nothing happened, it just says at the same screen and does nothing. I’m running Ubuntu on a Mac computer

AFAIR you need to push Ctrl + F1 first and then you can normally use the curses mode. Make sure you aren't running ubuntu in virtualization or emulator. Can't test because im out of my apartment atm.

Well ok I just tried pushing control f1 and then clicking start with curses but still nothing happens

You should select Curses on gimx launcher and it brings you to calibration mode then.

I do but how does that enter mouse calibration, like what is it supposed to do other than show you your mouse movements and the buttons being pressed?

You need to press Ctrl + F1 to enter calibration mode.