Help - Radeon RX580 & black screen

[rilopes]

Upgraded rig w/ Gigabyte RX580 Gaming 8GB and High Sierra 10.13.6 fresh install from Unibeast/Clover USB stick, on HDMI Intel HD4000. Boot w/ Intel video using "injectIntel" and installed all kexts. Then I dropped RX580 and...I just see black screen after Clover boot ! Tried almost all tricks found in this forum. Lilu/WEG, injectATI/DeInit, ports # override...Please, help !!!

 

[Gigamaxx]

Upgraded rig w/ Gigabyte RX580 Gaming 8GB and High Sierra 10.13.6 fresh install from Unibeast/Clover USB stick, on HDMI Intel HD4000. Boot w/ Intel video using "injectIntel" and installed all kexts. Then I dropped RX580 and...I just see black screen after Clover boot ! Tried almost all tricks found in this forum. Lilu/WEG, injectATI/DeInit, ports # override...Please, help !!!

Try bios settings PEG or PCIE 1 as primary display output. You can leave the IGPU enabled but not as first display output.

 

[rilopes]

Thanks a lot Gigamaxx ! For the record: the problem has always been the ports mapping specifically for this board type ! I had to use a workaround so the system could `see` the card port connected. The trick is shown in this post https://www.tonymacx86.com/threads/...se-black-screen-on-hdmi-and-dvi.267078/page-4 and the workaround is attached. Cheers !!!