- Disabling unsupported GPUs(Desktops)
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+Last modified: Tue Apr 14 2020 01:19:11 GMT+0000 (Coordinated Universal Time)
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+Disabling unsupported GPUs(Desktops)
So this is mainly needed for GPUs that are not supported in macOS, mainly this will be Nvidia users who wish to pair an AMD GPU for macOS use. While WhateverGreen does support the boot-arg -wegnoegpu, this only works when running on iGPU so for the rest of us we'll need to make an SSDT.
So to disable a specific GPU, we need to find a couple things:
-Finding the ACPI Path of the GPU
+Finding the ACPI Path of the GPU
To find the PCI path of a GPU is fairly simple, best way to find it is running Windows:
- Open Device Manager
@@ -418,7 +443,7 @@
Now converting this to an ACPI path is quite simple, remove the #ACPI and #PCI(0000):
`_SB_.PC02.BR2A.PEGP
And voila! We've found our ACPI path, now that we have everything we're ready to get cooking
-Making the SSDT
+Making the SSDT
To start grab our SSDT-GPU-DISABLE and open it up. Here there's a couple things to change:
External (_SB_.PCI0.PEG0.PEGP, DeviceObj)
Method (_SB.PCI0.PEG0.PEGP._DSM, 4, NotSerialized)
@@ -428,11 +453,27 @@ Method (_SB.PCI0.PEG0.PEGP._DSM, 4, NotSerialized)
PEG0 with BR2A
Hint: If your ACPI path is a bit shorter than the example, this is fine. Just make sure the ACPI paths are correct to your device, some users may also need to adapt _SB_ to their path
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