[SOLVED] Weird artifacts when installer loads with B550 board

[rohowsky]

Hi guys! I just built a new PC to start with my first ryzentosh, but I am having some issues. I am a beginner and at the moment I just managed to make work a highly compatible configuration like the HP 8300 both with Clover and Opencore. My new configuration has the following components:

Mainboard Gigabyte B550M DS3H
CPU Ryzen 3 3100
GPU RX460
RAM G.Skill 2x8Gb 3200

I set up Opencore by following the guide by Cortania. The installer loads but it shows weird artifacts, like in the picture I posted. Any idea what the problem might be?
In the link, you can also find my EFI folder and my config.plist file.

EFI folder

 

[RyzeCooker]

Add agdpmod=pikera in your boot arguments to see if it helps.

 

[Shaneee]

Update to the latest BIOS revision. It seems to be related to AGESA.

 

[rohowsky]

Update to the latest BIOS revision. It seems to be related to AGESA.

Thanks man! It worked.

Now everything seems to be working. The only issue is an error that I get every time I run macOS . It's about mismatched RAM modules and maximum supported memory (see picture below). Should I change the ram modules' position on the motherboard?
Currently, I am using the slots suggested on the mainboard's manual for the first two modules.

 

[Shaneee]

From that I can say you are using MacPro7,1 SMBios. Change it to iMacPro1,1 and you'll fix that issue.

 

[rohowsky]

From that I can say you are using MacPro7,1 SMBios. Change it to iMacPro1,1 and you'll fix that issue.

That worked as well. Many thanks!

I would say this thread is solved.