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Radeon RX 4XX/5XX standalone system, AMDRadeonX4250.kext (GVA support H264) does not support HEVC HW

UtterDisbelief

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Joined
Feb 13, 2012
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7,456
Motherboard
ASUS Z490-G Gaming (Wi-Fi) - OC 0.6.8
CPU
i3-10320
Graphics
RX560
Mac
  1. iMac
  2. Mac mini
Classic Mac
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  2. iBook
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I will try. Thank you very much

Section 3.5.2 of the ASUS User Manual in English, shows you how to choose the GPU.
 
Joined
Mar 26, 2011
Messages
10
Motherboard
Asrock Z490 Extreme4
CPU
i7-10700K
Graphics
RX 580
Mac
  1. iMac
Section 3.5.2 of the ASUS User Manual in English, shows you how to choose the GPU.
I saw that but there is nothing about iGPU, PEG (PCi Express Graphic) and PCI ...
I tried both variants, same thing...
 
Joined
Mar 26, 2011
Messages
10
Motherboard
Asrock Z490 Extreme4
CPU
i7-10700K
Graphics
RX 580
Mac
  1. iMac
-wegnoigpu
With this flag no crashing but uses only 20% of GPU, That is on Monterey
Same bootloader, on Mojave (I have dual system) same version on Davinci Resolve use 100% GPU and rendering in a blink of an eye... Is there a way to fix this?

Edit:

Davinci no crashing, but FCPX freeze and crash. So again, not working even with bootflag
 
Last edited:
Joined
Jan 28, 2014
Messages
162
Motherboard
Asus Rog Strix Z370-G Gaming (WI-FI AC)
CPU
i7-9700K OC'd @ 5.0GHz
Graphics
Vega 56
Mobile Phone
  1. Android
Hi!, I've a system similar to you.
Check my EFI configuration (I'm using OpenCore instead Clover).

Geekbench 4 results: avg 138K OpenCL / avg 116K Metal
DRM: Safari OK (Netflix without issues), Music, Apple TV, etc. OK.
AirPlay: OK
HVEC: OK
H.264: OK
FCPX: No issues

My video card is a Gigabyte Radeon RX 580 G1 with 8GB, and I'm spoofing the ATY,Part/ATY,Card/ATY,Rom/Vendor/Device in conjunction with WEG (I include a copy from config.plist file with these configs, check the file config-with-vga-config.plist); I heard that the Sapphire are natively recognised by macOS (plus WEG), so maybe you'll not need it.
Hi @familygw , I have the same problem and am trying to solve, I would like to use your solution, but I don't know where to start. I've seen your config-with-vga-config.plist multiple times ... those Aty values I don't know how to get them back. I have been using Vega injection on my MSI Radeon RX Vega 56 Air Boost.
I'm on iMacPro1,1 and I use OpenCore 0.7.9
In the BIOS settings, no IGPU, only PCIE.
Thanks for any help.

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