Hey folks, finally some coders did it! We have FULL working AMD RX card without the need of any helper card (iGPU included):
there is a new version of
LILU kext (v1.1.6) availlable and a new PlugIn for it:
WhateverGreen (v1.0)
With them you will be able to disable iGPU completely and CSM disabled in BIOS and you will still get this after verbose booting:
and within HIGHSIERRA you will also get full 8-channel AUDIO-via-HDMI:
under HIGH SIERRA you will have to use "-radbeta" as bootargument. HDMI-AUDIO only with ORINOCO Framebuffer.