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MacPro 2019

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@CaseySJ the maximum I can get for now is to inject device GFX1@0 through SSDT. Attached is the latest EFI folder.
1654009788316.png


Code: 
DefinitionBlock ("", "SSDT", 2, "Apple", "AMD6950", 0x00000000)
{
    External (_SB_.PC03, DeviceObj)
    External (_SB_.PC03.BR3A, DeviceObj)
    External (_SB_.PC03.BR3A.US00, DeviceObj)
    External (DTGP, MethodObj)    // 5 Arguments

    Scope (\_SB.PC03.BR3A)
    {
        Scope (US00)
        {
            Name (_STA, Zero)  // _STA: Status
        }

        Device (EGP2)
        {
            Name (_ADR, Zero)  // _ADR: Address
            Device (EGP1)
            {
                Name (_ADR, Zero)  // _ADR: Address
                Device (GFX1)
                {
                    Name (_ADR, Zero)  // _ADR: Address
                    DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                    Return (Local0)
                }
            }
        }
    }
}
 

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Last edited:
zirkaiva said:
@CaseySJ the maximum I can get for now is to inject device GFX1@0 through SSDT. Attached is the latest EFI folder.
Click to expand...
Two points:
  1. Have you tried SSDT-AMD6950-V2.aml?
  2. It's best not to use the 'search' field in IORegistryExplorer because it collapses the device tree (we can fix this by clicking 'x' on the right side of the search field after the search is done). Instead, simply scroll down to PC03.BR3A and post a screenshot.
 
CaseySJ said:
Two points:
  1. Have you tried SSDT-AMD6950-V2.aml?
  2. It's best not to use the 'search' field in IORegistryExplorer because it collapses the device tree (we can fix this by clicking 'x' on the right side of the search field after the search is done). Instead, simply scroll down to PC03.BR3A and post a screenshot.
Click to expand...
1654012896771.png

1654013211109.png


The patch is still there as you can see from the config file.
 

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