How to use clover build xfx 380x at in Capitan

[ai277014717]

When I power up computer.It's black screen.
I think it must be framebuffer issue.
380x devid is 1002:6938 this id is at amd9000controller.kext.
This id is m285x. So how to fake 380x to M285X.

When I use HD4600 enter system. and plug hdmi to 380x. The screen is normal.I this the card can use in Capitan

 

[Fl0r!an]

It's a known problem, have a look into the Radeon sticky thread.

TL;DR: Use iGPU as primary.

 

[ai277014717]

Thanks for you reply.
I was move bootloader to EFI partition and make iGPU to the first.
But the screen is always black,I was try to fix the framebuffer, it's not work,too.
There is my config.could you help me fix it?
When is input wrong gpu fakeid = 0x9639. It can enter system but no driver.
View attachment config.plist

 

[Fl0r!an]

From my current knowledge your card can't be used without iGPU. You'll always boot to a black screen, with or without framebuffer patch.