- Joined
- Dec 23, 2020
- Messages
- 13
- Motherboard
- Gigabyte X299 Designare EX
- CPU
- i9-10940X
- Graphics
- RX 580
- Mac
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- Mobile Phone
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X299 Big Sur Support
Interestingly on this board it simply won't boot past the picker if the NPCI=0x2000 argument is not present. Boot arguments are case sensitive, NPCI=0x2000 is nonsense and will have no effect. It should be npci=0x2000 (or npci=0x3000).

So I was able to start completely over and I tried using iMacPro1,1 and MacPro1,1 and iMac19,1 so what I've found is that I get better GPU performance with iMac19,1 with my setup when benchmarking (which is a great troubleshooting tool to see what's working properly.) ex. iMacPro1,1 34830 Metal score vs. iMac19,1 51600 Metal score. When the only thing that changed is the SMBIOS. Super odd... Granted I have a brand new RX580 8GB, even though it's older tech, if you have one in a x299 board, try it yourself and see what scores you get on iMac19,1 vs iMacPro1,1 or MacPro1,1 prove me wrong?
Now on to my #1 issue: I've used USBInjectAll.kext and set the XHCIPortLimit properly, but when viewing in Hackintool v3.5.3 to view all the ports. The issue is that I see 2 controllers, but when plugging in things 1 port at a time, most times, I insert the USB stick and it NEVER shows in Hackintool where it's located (but mounts the volume on the desktop), super frustrating to say the least... Like phantom USB ports that aren't listed...
I'm going to attach my EFI file in case someone can check or see what's wrong... Thanks in advance!
Here is the screenshot from Hackintool, FYI it used to show at the top PXSX and 4 ports listed but now nope...
The saga continues....