I have not yet tried updating to OC 0.7.2 which is the current version. This is my main work from home machine and it is working without issue, so I'm not chasing the releases. The Open Core guide does have a troubleshooting section which should be the first place to review. Beyond that, opening a new thread here would be your second.
Thanks fpr the reply! Can I just ignore Wifi and Bluetooth? I don't need it. I am planning to build a music production workstation. I will use external audio interfaces and Ethernet.
For the built-in Wifi and Bluetooth you can disable them in the BIOS and I think you will be ok. I do not know what having the plist settings and kext files in place for non-existent hardware will do.
First of all, thanks very much for the thorough writeup, excellent and thorough. I have just installed Monterey on this board with a i9-10850K processor and RX6800XT video card using opencore 7.6. Everything is working EXCEPT my USB ports. Your information, so far, has given me some insight to how they are laid out on the board that I haven't found anywhere else. I'm going to take a closer look at the USBMap kexts you provided and will probably use them to solve this issue. But, my real question is how did you figure this out? I have tried the Opencore recommendations for configuring the ports using both the USBMap Tool and manually, but some of my ports are nowhere to be seen. I have not tried the SSDT-RHUB route yet, and it isn't normally recommended for this board. But I am still at a loss and USBInject-all doesn't work on Monterey. Otherwise, this setup is a real screamer so far. This is getting a bit deeper than I have had to dig before, so if you have any references on the process of digging up port definitions, or suggestions on how best to approach this using your USBMap files (never edited these before), feel free to chime in.
My understanding is that; everything beyond Big Sur 11.2 has completely broken the usual methods of USB configuration. This is explained (somewhat) in the Dortania guide covering Big Sur and Monterey.
Apparently what is broken is the USBInjectAll kext. Even though it is broken, I managed to get everything working on GA-Z170X-UD5, GA-Z170MX-Gaming 5, and GA-Z270X-Gaming 5 motherboards running Monterey. But, this particular motherboard (GA-Z490 Elite) is very different in what was detected. On the others, I just went ahead and used the manual discovery method and it ended up working fairly well. I think the only issue I had was one port short on the GA-Z170X-UD5 motherboard. For the Z490 board, what I did with the EFI provided by MrPopman was I used his USBMap_InUse kext and on my Fractal Design R7 case, the only things that do not work are the two blue ports underneath the ethernet port, and the USB-C port on the front of the case. I opened his USBMap_InUse kext with ProperTree and can understand the logic of what it represents and will do more experiments to see if I can get the USB-C front port working and sacrifice the USB 2.0 function ("personality") of the two front USB 3.0 ports and if that will work, I'll be a very happy camper. That will keep it at 15 ports and I'll have every practical thing I need. But, it was actually really easy to install Monterey using Opencore 0.7.6. I stuck strictly to the guidelines and the only hitch was to get the RX6800XT video card working I had to add the agdpmod=pikera to t he boot-args line. Then it zipped right through the install, all but the USB ports. And the USBMap_InUse kext added nearly all that. I just really want to understand how it is actually done.
