GUIDE How to Enable AMD RX 6800, RX 6800XT and RX 6900XT on macOS Big Sur and Later

[EliteMacx86]

How to Enable AMD RX 6600, RX 6600XT, RX 6800, RX 6800XT and RX 6900XT Graphics on macOS Big Sur and Later​

An EliteMacx86 Exclusive Guide - This guide covers the implementation of AMD Navi RDNA2 GPU on macOS Big Sur and later. By following this guide, you'll be able to achieve full QE/CI on your system.

Overview

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Apple has been using a wide range of AMD Graphics Card for a long time. The good news is with the release of macOS Big Sur, version 11.4, will include the drivers for AMD Navi RDNA 2 architecture lineups, which include AMD RX 6800, RX 6800XT, and 6900XT GPU variants. This means from macOS Big Sur 11.4 and future macOS versions, we can have the GPU working, as long as macOS supports it.

Surprisingly, with macOS Monterey 12.1, AMD RX 6600 and 6600XT are supported too.

With such good support for AMD GPUs, it's quite easy to get AMD graphic cards working on macOS Big Sur 11.4 and later which requires only a few steps. The sleep/wake function also works normally without any restarts or crashes. Also, you don't need to use any helper cards or IGPU.

Before using this guide, we recommend you perform a clean installation of macOS.

Requirements

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Graphics	AMD NAVI RDNA 2
Kexts	Original Graphics kexts in S/L/E.
macOS	Big Sur 11.4 and later. For RX 6600 and RX6600XT, macOS Monterey 12.1 or later is required.

Compatibility

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For more information on GPU compatibility, refer to the thread linked below.

AMD GPU Compatibility List for macOS

AMD GPU Compatibility List for macOS HD 2000 Series Vendor Model Metal Compatible Sierra High Sierra Mojave Catalina Big Sur Monterey Ventura AMD Radeon HD 2350 AMD Radeon HD 2400 PRO AMD Radeon HD 2400 XT AMD Radeon HD...

www.elitemacx86.com

STEP 1: Setup BIOS
The very first step is to set up BIOS to have the AMD GPU Enabled on your System. Follow the steps below to set up your BIOS for AMD GPU.

1. On your target computer, boot to BIOS. Refer to your user manual for the BIOS Key
2. Set the following parameters as shown.

Settings	Value	Notes
Initial PCIe Output Display	PCIe/Auto/Enabled	Depending on your System's BIOS, use one of the Values available
Intel Processor Graphics	Disabled

3. Save & Exit Setup

NOTES:

• The above settings are for Graphics only. See BIOS Settings for more information.
• If there is no option to disable IGPU and IGPU loads under macOS, disable it using -wegnoigpu boot arg.
• If your system does not have any of the above settings in BIOS, ignore such settings.

STEP 2: Remove Outdated Kexts, Injections, and ACPI Renames
Once you have set up the BIOS, the next step is to remove the kexts, injections, and ACPI renames that can interfere with the Graphics implementation. To remove such, follow the steps below.

Kexts Removal
If you're using any of these kexts listed below, it is recommended to remove them. See notes below.

1. Mount your ESP
2. Remove the following kexts.

• IntelGraphicsFixup.kext
• NvidiaGraphicsFixup.kext
• CoreDisplayFixup.kext
• Shiki.kext
• IntelGraphicsDVMTFixup.kext
• AzulPatcher4600.kext
• AppleBacklightFixup.kext,
• FakePCIID_Intel_HD_Graphics.kext
• FakePCIID_Intel_HDMI_Audio.kext
• FakePCIID.kext

NOTES: If you're using OpenCore, you'll also need to remove the kext entries from your kernel section in your config.plist For Mojave and prior, make sure these kexts don't exist in Library/Extensions or System/Library/Extensions. Do not remove FakePCIID.kext if you're using any other FakePCIID plugins.

Clover Properties and Injections
If you're using Clover, you need to disable Clover properties and injections.

1. Mount your ESP
2. Open your config.plist and disable and/or remove the following from their respective sections

Disable DSDT Fixes
The DSDT fixes can be disabled in Acpi>Fixes section.

• AddHDMI
• FixDisplay
• FixIntelGfx
• AddIMEI
• FixHDA
• AddPNLF

Remove Fake IDs
The Fake IDs can be disabled in the Devices>Fake ID section.

• ATI
• IntelGFX
• NVidia
• IMEI

Disable injection properties
The injection properties can be disabled in the Devices>Properties section.

• Inject
• UseIntelHDMI
• HDMIInjection
• SetIntelBacklight
• SetIntelMaxBacklight

Disable Graphics Injection
The Graphics injection can be disabled in the Graphics section

• ATI
• Intel
• NVidia

Remove ig-platform-id
The ig-platform-id can be removed in the Graphics section

ACPI Renames
If you're using any ACPI renames, you'll need to disable or delete the ACPI renames as these can conflict with WhateverGreen's automatic renames.

1. Mount your ESP
2. Open your config.plist and remove the following ACPI renames. For Clover, it's in Acpi>DSDT>Patches section, and for OpenCore, it's under ACPI>Patch section.

• GFX0 to IGPU
• PEGP to GFX0
• HECI to IMEI
• MEI to IMEI
• HDAS to HDEF
• B0D3 to HDAU

STEP 3: Add Required kexts

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The next step is to add the required kexts to enable AMD Graphics. WhateverGreen doesn't work standalone. WhateverGreen and Lilu are needed together to work in conjunction in order to enable AMD Graphics and prevent any errors.

1. Download WhateverGreen and Lilu from the downloads section of this forum.
2. Mount your ESP.

For Clover:
If you're using Clover, copy both the kexts to EFI/Clover/Kext/Others

For OpenCore:
If you're using OpenCore, copy both the kexts to EFI/OC/Kexts. You'll also need to add the kext entries in the Kernel section of your config.plist.

NOTES: Download the latest version for better support. Download only the RELEASE.zip file. If the kext is already present in the directory, replace them with a new version Do not use WhateverGreen.kext.dSYM, WhateverName.app and Lilu.kext.dSYM

STEP 4: Add Boot Arg

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The next step is to modify your config.plist and add a boot flag to prevent black screen after macOS finishes loading.

For Clover

1. Mount your ESP.
2. Open config.plist from EFI/Clover directory
3. Go to the Boot section. Add -agdpmod=pikera under Boot Arguments.
4. Save config.plist

For OpenCore

1. Mount your ESP.
2. Open config.plist from EFI/OC directory.
3. Go to the NVRAM section. In the UUID "7C436110-AB2A-4BBB-A880-FE41995C9F82" add -agdpmod=pikera under boot-args.
4. Save config.plist

STEP 5: Restart your System

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After performing all the above steps, restart your system for the applied changes to take effect.

Verify your Card
Look for the information of your card under About this Mac and verify the VRAM. For more information about your Card, navigate to System Information and navigate to Graphics/Displays Tab.

NOTES: If you get a black screen, make sure to update your BIOS and switch from Legacy to UEFI boot mode. If your BIOS has CSM option, disable it. If your BIOS has PCI ROM Priority, set it to UEFI/UEFI ROM. If your BIOS has Legacy Option ROMs, set it to UEFI/UEFI Only.

Problem Reporting

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Details:

1. macOS version
2. Copy of IOReg
3. Kextcache output

Screenshots:

• Hackintool>PCIe Export
• About This Mac
• System Information/Graphics/Displays

Files:

• For Clover, compress EFI/Clover, and exclude the themes folder.
• For OpenCore, compress EFI/OC.

Notes:

• Do not include the complete EFI folder.
• Put all files in a folder with your name, compress files as Zip and attach files using site attachments only.
• Do not use any external links.

Sample Attachment

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The AMD RX 6800 and 6900XT from AMD are used as examples in this guide.

AMD RX 6800

AMD RX 6900XT

Video Demonstration:

Credits:
mooseknuckleboi

 

[recep.67]

where are the kexts?

 

[EliteMacx86]

where are the kexts?

Check the post. It has been updated. The post already mentions "WhateverGreen and Lilu" are the required kexts.

 

[deedee]

thanks for this tutto, just one thing, i'm not sure rx6700 are op with 11.4
The 6700XT has a different device ID

 

[EliteMacx86]

thanks for this tutto, just one thing, i'm not sure rx6700 are op with 11.4
The 6700XT has a different device ID

Yes, that's correct. We're still testing it.

 

[utilman]

Hello, i have one question. I just bought a graphics card accidently
(ASRock Radeon RX 6700XT Challenger Pro 12GB OC)
and I wanted to ask now, if i should return this card, because i was reading in some forum that this card is not compatible with BigSur. Should I now return the card or will there be good hope for support in the near feature?
Thanks,
utilman

​

 

[EliteMacx86]

Hello, i have one question. I just bought a graphics card accidently
(ASRock Radeon RX 6700XT Challenger Pro 12GB OC)
and I wanted to ask now, if i should return this card, because i was reading in some forum that this card is not compatible with BigSur. Should I now return the card or will there be good hope for support in the near feature?
Thanks,
utilman

​

There might be a support in the future, but as of now, this is not supported.

 

[utilman]

Hello, i have one question. I just bought a graphics card accidently
(ASRock Radeon RX 6700XT Challenger Pro 12GB OC)
and I wanted to ask now, if i should return this card, because i was reading in some forum that this card is not compatible with BigSur. Should I now return the card or will there be good hope for support in the near feature?
Thanks,
utilman

There might be a support in the future, but as of now, this is not supported.

All right, yes, what i was reading on the internet is that the Device ID of the 21 (?) is still part of the kext and in the last update there was no support, maybe in the next. Anyway, i will return the card and wait if Apple release the drivers anytime. But i think they will not. But we will know anytime later. Thanks for response

 

[killingspree]

Thanks for this. My 6800 XT works but everytime i need to change the bios Re-Bar support to disabled instead of Auto. Is there a way to fix it ?

 

[EliteMacx86]

Thanks for this. My 6800 XT works but everytime i need to change the bios Re-Bar support to disabled instead of Auto. Is there a way to fix it ?

If your BIOS settings is changing, replace the CMOS.