RX 550 - Correct Spoofing but no H264/Hardware Acceleration - Help Fix DRM

Jumper981

New member
Joined
Jan 13, 2022
Messages
6
Hi to All!
First post here, hope it's fine!

My Config:
B550 Master
RX 550 Pulse 2GB (LEXA)
16gb 3600 Ram
NVMe 970 Evo Plus

My Config it's not getting H264.
Tested with VideoProc, VDADecoderCheck.
videoPro.png

VDA Error:

-12473

Already followed Opencore Guide for fixing DRMs.
Spoofing using SSDT.
no-gfx-spoof entered, device id 67FF

Attached EFI,IOReg.

If someone have any suggestions it's much appreciated.
 

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  • EFI.zip
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Edhawk

Member
Joined
May 2, 2020
Messages
96
That's because you are using an unsupported Lexa core RX550 card. There are no drivers in macOS for the Lexa series of AMD dGPU's

Spoofing the device-id for the card so it matches a Baffin LE core RX550 (0x67FF) isn't going to make your card work with full acceleration or H264.

Suggestions: purchase a Baffin LE core RX550 card, and sell your Lexa core card.
 

Law_ri

Donator
Donator
Joined
Dec 3, 2021
Messages
15
Hi, I have RX 550 Lexa card and gfx spoof for Radeon Polaris.
Also no hw acceleration in VideoProc.
What is -radcodec boot arg, how did you get it to work?
 

Edhawk

Member
Joined
May 2, 2020
Messages
96
@Jumper981 nice fix, if it works as the VideoProc screenshot shows.

I had seen some Real Mac users mention the -radcodec boot argument over at MacRumours, but never anyone running an Intel or AMD Hack. Wasn't sure what it was meant to do when I saw it in the WhateverGreen.kext list of boot arguments, if I am honest.
 

Jumper981

New member
Joined
Jan 13, 2022
Messages
6
Hi, I have RX 550 Lexa card and gfx spoof for Radeon Polaris.
Also no hw acceleration in VideoProc.
What is -radcodec boot arg, how did you get it to work?
You could enter them under NVRAM/XXX-XXXX-XXXXXXXX (There are 3 codes, choose one of them, it should be an option called Boot Args.
shikigva based on your config (=80 if using iMacPro1,1 =128 if using MacPro7,1)
Schermata 2022-01-15 alle 17.52.11.png

Also, you should add:

Schermata 2022-01-15 alle 17.52.38.png

unfairgva (for fixing Apple TV Green Screen)

This should be added to your GPU Device Properties (you can find it in hackintool (PCI Devices))
 

Jumper981

New member
Joined
Jan 13, 2022
Messages
6
@Jumper981 nice fix, if it works as the VideoProc screenshot shows.

I had seen some Real Mac users mention the -radcodec boot argument over at MacRumours, but never anyone running an Intel or AMD Hack. Wasn't sure what it was meant to do when I saw it in the WhateverGreen.kext list of boot arguments, if I am honest.
Unfortunately now only Sleep/Wake doesn't work (It's going into sleep mode but wake immediately; caused by GPP0 (in my config is a Samsung NVMe 970 Evo Plus))
 
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