Hello everyone. I have the same problem with Sapphire Radeon R9 390 Nitro. It works good with 0x67B01002 (ATI inject) and modified AMD8000Controller.kext & AMDRadeonX4000Controller.kext on El Capitan, until I update to Sierra 10.12.
Sierra showed me a black screen while I was boot with HDMI monitor. Then I try to load with Display Port (0x67B1(0)1002 ATI inject), and now I see "Radeon 290/390" with 5 Mb VRAM in system info.
In order to solve this I already try to change:
- FB Name,
- Enter VRAM value 8192 in my Clover config,
- use 0x67B11002 instead 0x67B01002,
- Load VBIOS (dumped from Windows via GPU-Z),
- Enter ATI Connectors Data and ATI Connectors Path.
- Edit AMD8000Controller.kext & AMDRadeonX4000Controller.kext to use 0x67B01002 in my Sierra.
Unfortunately, I have no ideas how to solve it.
Maybe anyone have any ideas? Thanks!