MacOS Sonoma: Setting up NVIDIA GPU + Intel HD630 GPU mode Help Please

[rhinca2026]

Please help on what Device Properties make sense for a very unique system configuration. I am aware that the NVIDIA GPU is not supported by MacOS Sonoma.

Tried the following Device Properties, but get a black screen. The only way around this for completing the installation was to add -igfxvesa in the boot argument.

Device Properties:

PciRoot(0x0)/Pci(0x2,0x0)
├── AAPL,ig-platform-id → 07009B59 (Data) // Desktop with connectors
├── device-id → 16590000 (Data)
├── framebuffer-patch-enable → 01000000 (Data)
├── framebuffer-stolenmem → 00004001 (Data) // 256MB (to match BIOS settings)
├── framebuffer-con1-enable → 01000000 (Data)
├── framebuffer-con1-type → 00040000 (Data) // DisplayPort

The system configuration is basically capable of operating in two distinct modes (see system diagram below):

1. NVIDIA GPU–only mode (Default Configuration)
2. NVIDIA GPU + Intel GPU mode.

In the BIOS I can select and enable Intel graphics on DisplayPort port #4 (mux shown in the system block diagram below) in the BIOS and also configure the Video Memory. Its quite possible the the Intel GPU doesn't get started until after the OS get loaded....

 

[rhinca2026]

Tried going through all the connectors but still have a black screen on DP#4 which is driven by the iGPU. The NVIDIA Quadro Display Port show the boot log up until the point where the iGPU is supposed to take over.

Key	Value	Status	Purpose
AAPL,ig-platform-id	00001259	Correct	Headless framebuffer with hidden connectors
device-id	16590000	Correct	Spoofs to native ID 0x5916
framebuffer-fbmem	00009000	Correct	9MB framebuffer memory
framebuffer-patch-enable	01000000	Correct	Enables patching
framebuffer-stolenmem	00004001	Correct	256MB (matches your BIOS)
disable-external-gpu	01000000	Correct	Device-level NVIDIA disable
framebuffer-con0-enable	01000000	Correct	Enables connector 0 for testing
framebuffer-con0-type	00040000	Correct	Sets connector 0 as DisplayPort