[Success] AMD RX6000 Series working in macOS

[oli.mathieu]

@CaseySJ @MysticalOS
Thanks
I apology It is indeed an RX 6600 XT !!!

Here is GPUZ

and HWinfo

So it seems that the ID 100273FF right ?
Do I need to spoof it with another one ?
How ?

 

[CaseySJ]

@CaseySJ @MysticalOS
Thanks
I apology It is indeed an RX 6600 XT !!!

Here is GPUZ
View attachment 536271
and HWinfo
View attachment 536272
So it seems that the ID 73FF1002 right ?
Do I need to spoof it with another one ?
How ?

Device 0x73FF is natively supported in Monterey 12.1 (beta).

Some questions:

• Is Resizable BAR Support enabled or disabled in BIOS? Best to leave it disabled for now.
• Just to confirm: Are you running Monterey 12.1 beta?
• Are you booting from the correct EFI partition?
• Have you tried CMOS Reset followed by configuring BIOS parameters?

 

[oli.mathieu]

Device 0x73FF is natively supported in Monterey 12.1 (beta).

Some questions:

• Is Resizable BAR Support enabled or disabled in BIOS? Best to leave it disabled for now.

It disbale in the BIOS

• Just to confirm: Are you running Monterey 12.1 beta?

Yess I Update Yesterday this drive with Monterey 12.1b4

• Are you booting from the correct EFI partition?

Yess, When enable/disable the verbose mode in the boot arg it acts accordingly

• Have you tried CMOS Reset followed by configuring BIOS parameters?

I Update the BIOS with the latest and Load the default preset and I configure the BIOS as usual

FYI If I boot from the installer I get to UI ... but due to lack of NVRAM support the installation process never ends ....

 

[MysticalOS]

How long are you waiting after black screen?

I just want to add that between the verbose boot and window server starting, even my 6900XT screen goes black...Since it has no mac EFI it will be black when it's transitioning out of bios/OC boot and into macOS window server driven driver. Especially on display port since that takes a bit longer to initialize. I use two displays so I always watch the DP display take several seconds longer to come on over the DVI one.

 

[oli.mathieu]

How long are you waiting after black screen?

1 min or Two
After that I do a Hard Turn Off

 

[MysticalOS]

Ok yeah it shouldn't take that long.

 

[CaseySJ]

1 min or Two
After that I do a Hard Turn Off

Are there any SSDTs in the OpenCore folder for other GPUs? If so we should of course disable them. We should also remove or disable any Device Properties related to previous GPU.

 

[oli.mathieu]

Are there any SSDTs in the OpenCore folder for other GPUs? If so we should of course disable them. We should also remove or disable any Device Properties related to previous GPU.

I don't think there is ...
Here my EFI (serials are random)
Many Thanks

 

[CaseySJ]

I don't think there is ...
Here my EFI (serials are random)
Many Thanks

Does your BIOS contain Above 4G Decoding? If so, try this:

• BIOS --> Above 4G Decoding --> enabled
• config.plist --> NVRAM --> boot-args --> remove "npci=0x2000"

Strongly recommend copying EFI folder to EFI partition of USB flash disk and making the changes there. Then boot from USB flash disk.

 

[oli.mathieu]

Does your BIOS contain Above 4G Decoding? If so, try this:

• BIOS --> Above 4G Decoding --> enabled
• config.plist --> NVRAM --> boot-args --> remove "npci=0x2000"

Stuck at "PCI configuration end, ..."

Strongly recommend copying EFI folder to EFI partition of USB flash disk and making the changes there. Then boot from USB flash disk.

That what I'm doing
Thanks