Crossover 2795 QHD freesync over dvi doesn't work?

[ToastyX]

FreeSync shouldn't be active on the desktop, so the only reason the screen would stay black is if the monitor can't display the resolution. Make sure it's set to the correct resolution and refresh rate in the Windows display settings. It's possible the monitor can't handle 60 Hz with a single-link connection. Maybe it'll work with lower refresh rates like 40-50 Hz.