<< Solved >> z370m ds3h Sapphire RX 580 Pulse Black Screen

[WizMeister]

Hello, always nice to hear from this helpful community.

I recently made my Hackintosh with Mac OS Catalina 10.15.1 (SMBIOS iMacPro1,1)

Mobo: Gigabyte z370m ds3h (F10 Bios)
CPU: Intel i3-8350K

Everything was working great using the iGPU (Only had to fix HDMI connection type in Device Properties to get rid of purple screen)

Today I bought an RX 580 Pulse by Sapphire which is supposed to work OOB. But not for me, it seems.

I installed it, selected the PCIe Slot as Graphics Card on BIOS, connected the display to the HDMI port of the RX 580 and rebooted.
Clover bootloader shows up, then the classic loading console logs, but then the monitor flashes white and the screen then becomes black.

I disabled CSM from BIOS -> No result
I changed ig-platform-id to headless mode (0300923E) -> No result
I tried different HDMI ports on the GFX Card and also DisplayPort -> No result
I tried changing the SMBIOS to iMac18,3 -> No result
I tried disabling the iGPU from BIOS -> No result

I am starting to think that there is something wrong with my Motherboard, but I have seen Successful builds with the same motherboard and Graphics Cards.

You can find my EFI folder attatched. I will appreciate any help as I am this close to pulling my remaining hair off

 

[WizMeister]

Adding WhatEverGreen 1.3.4 and Lilu 1.3.9 Fixed the problem

 

[ahtlv]

Fine! Your EFI was perfect for me. Thanks.