Asus ROG Strix G15 AMD Advantage dGPU passthrough

Hi all i have somewhat successfully passed 6800m to VM. Its a MUXless laptop, but USB-C alternate mode is connected to laptop dGPU. Problem is i dont see any UEFI shell or boot sequnce or anything till guest is in DE. What do you need me to post or is there any guide to help with this, i tried to find but no luck.
HOST OS is arch linux, guest that boots from black screen to DE is manjaro gnome, didnt try other DE, but linux mint is just black screen, so is windows.