Thunderbolt 3 always gives black screen

[skoot500]

I have recently installed Mojave and have placed the dsdt file in the correct place. All seems to be fine at the moment. But, the one thing I cannot for the life of me figure out is why can't I use thunderbolt 3 for my monitor display???

Everything that should be enabled for thunderbolt is enabled in the bios. I've tried hot swapping, I have shutdown then plugged in the cable. Every time results in a black screen. My monitor recognizes that it is plugged in via TB3 but the screen remains black. I'm new to all of this but is there a way to have the igpu enabled along with the rx580? Please help.

FYI all ports work coming from rx580.

[MaLd0n]

[ref]skoot500[/ref], tbh for monitor in some cases is very problematic, avoid use it if cause problem