[Success] AMD RX6000 Series working in macOS

[Gigamaxx]

So far no luck on my end on 11.4. My 6900XT is not recognized.
I switched off WEG and moved to MacPro7,1 but no dice.

Did you remove any SSDTs for the previous graphics card? Disable IGPU?
Device Properties section?
Is it all vanilla? No prior graphics settings or fixes? NVRam reset.

 

[byteminer]

Did you remove any SSDTs for the previous graphics card? Disable IGPU?
Device Properties section?
Is it all vanilla? No prior graphics settings or fixes? NVRam reset.

Yeah, I'm only running minimal SSDT's, no GPU-related ones.
No Device Properties for that part either and my CPU does not have an iGPU.
NVRAM reset was also done, but unfortunately did not help.
I'll try and experiment some more, maybe I'll happen across something else eventually.

 

[Andy1983]

Yeah, I'm only running minimal SSDT's, no GPU-related ones.
No Device Properties for that part either and my CPU does not have an iGPU.
NVRAM reset was also done, but unfortunately did not help.
I'll try and experiment some more, maybe I'll happen across something else eventually.

I see you were running a RX580, have you added boot flag agdpmod=pikera you will need that now I think.

 

[Gaulomatic]

@Andy1983 Yes, it's set to normal. I even tried to set it to a value below 1 in the corresponding .plist file, but 1 is the lowest value possible.

 

[byteminer]

I see you were running a RX580, have you added boot flag agdpmod=pikera you will need that now I think.

I've tried booting with WEG (with and without the agdpmod argument) and completely without WEG, but none of these combinations led to success. I can see it has the correct device ID in system info, but for some reason it's not actually detected as a 6900XT.

 

[fwardsbc]

I've tried booting with WEG (with and without the agdpmod argument) and completely without WEG, but none of these combinations led to success. I can see it has the correct device ID in system info, but for some reason it's not actually detected as a 6900XT.

Reference AMD card?

 

[onemorething]

Is there an way to disable SAM for macOS (which wont work?) but keep it enabled for Windows?

I'm also having issue with Resizeable bar. MacOs cannot boot when it's enabled.
It's a pain to toggle when I want to boot Windows to play some games.
I hope it can get fixed.

 

[Cyberneticist]

Updated to 11.4.1 beta yesterday, installed a new card today. Everything is working fine (including my Sound Blaster Audigy RX which is using a custom kext) except 1. USB 3.0 ports on the front panel 2. Bluetooth dongle (it may be not supported by Big Sur, will try to change it via https://www.tp-link.com/in/home-networking/adapter/ub400/

P.S. I have outdated CPU & MB which have PCI-E 3.0 slots only so my benchmarks may not be so good

 

[dehjomz]

I wonder if the usb-c port on the 6000 series needs port mapping and proper power properties similar to how we have to do it for the onboard USB ports?

 

[TheBloke]

I wonder if the usb-c port on the 6000 series needs port mapping and proper power properties similar to how we have to do it for the onboard USB ports?

It looks like the new drivers disable the USB ports. It shows up with an AppleAMDUSBXHCIPCI entry, but with no ports:

And whereas in earlier Big Sur versions you could plug in a USB stick or other device into the USB-C port and it'd work, and sleep was broken even with the GPU disabled unless the controller was disabled, neither is true now.