Enable HW Encoder on AMD RX 6800/6900XT macOS Big Sur

[sammy2k8]

Good Morning Guys

at first I want to say thank you to all guys out there with many interesting stuff, troubleshooting and detailed tutorials!

since some days im again at the place with a Hackintosh build:
Intel 10900
Gigabyte z490 Aorus Ultra (iGPU is disabled)
32 GB RAM
1TB XPG NVMe Flashdisk
Intel WiFi AX201 (onboard)
AMD RX 6900XT
macOS Big Sur 11.6.2 (OpenCore 0.7.7)

Nearly everything is working perfectly (Wifi, Bluetooth, AirDrop, iMessage...) except hardware accelerated encoding with my graphics card.
I've read many sites and tutos here and at MacRumors about enable this thing -> renaming, patching, use boot args like -radcodec. With a short overfly I don't get it. maybe im blocked.

everything seems to be in place, GFX0, correct recognizing from the graphics adapter (no N/A at systeminfo), use of the original Apple drivers but I can't use video toolbox and video proc doesn't see any hw acceleration in my system.

maybe you guys could help me out with a second view on it?
I attached some infos and my serial cleared config.plist.


!thanks a lot for your patience and help!




Update:
added the macrumors url
added screener from video proc

 

[jan2ooo]

Sorry, no hint on that. But did you find a solution?

 

[zappy39]

I had the same prob with iMac 20,2 SMBIOS so I changed to Mac Pro 7,1 now all good.you could try 7,1 might work

 

[sammy2k8]

Hey there!
Ive tested the hint with the MacPro 7,1 setting, but no change at all. Still no accelerator available.

Is it maybe because of the disabled igpu?

(I want to use the amd gpu for both mainscreen and hevc accel. encoding)

 

[Edhawk]

Did you reset the Nvram when you made the SMBIOS change?

 

[sammy2k8]

hi guys & hi @Edhawk

now with the MacPro7,1 setting and the last hint (reset Nvram) its shown - its really there!
thank you very much for that.

I should never mind now the message about the memory banks I get after every startup? something like: "there is more than the max. supported memory installed...."

 

[Edhawk]

Add a copy of RestrictEvents.kext to your /OC/Kexts folder and a corresponding entry to your config.plist.

See if that helps regarding the MacPro7,1 Memory issues.

 

[awert_65]

you should try with smbios imacpro1,1 if you wanna have all graphic acceleration, including encoding and decoding on discrete card (with igpu disabled in bios)

 

[awert_65]

should also work on macpro7,1