This boot arg can be useful but I doubt that thanks to it the RX is well recognized, its purpose is another.
As long as it is not well detected, VRAM 7mb is displayed and it has no graphics acceleration.
What surprises me is that you
@Middleman have RX550 (it is in the Hack called Arcee, right?) well installed and from what you say this is achieved with SSDT-GPU-SPOOF.aml + DeviceProperties in config.plist. But
@ifreddy already has this setting and yet it is not well detected. What is wrong?
@ifreddy
Read this post:
Hello, Finally, I manage to install High Sierra and after that, I updated OS to Mojave. Now I'm trying to run RX550 but without luck. I read a few threads where RX550 was used and there it works without any problem. SPECS: MB: MSI x299 SLI Plus CPU: I7-7820x GPU: RX550 2GB (0x699F) -...
www.tonymacx86.com
The full thread can be helpful for the problem you have.
I can only came up with the idea of trying 3 different settings:
- SSDT-GPU-SPOOF.aml + DeviceProperties in config.plist -> dGPU not well detected
- SSDT-GPU-SPOOF.aml without DeviceProperties in config.plist
- DeviceProperties in config.plist without SSDT-GPU-SPOOF.aml.
I guess settings 2 and 3 aren't going to work either, but I'm saying this to try something different.