As the title says, I have a dGPU (Sapphire PULSE Radeon RX 580 8GB GDDR5) installed on an ASUS Prime z390-a (latest BIOS 1401) mobo running macOS 10.14.6 and there's no output via DP or HDMI from the card. I'm getting display out from the mobo though. That has no issues. I've followed all of the usual settings for my BIOS based on others with same board.
When the system starts, the fans on the card spin up and everything just no video out form it. I even tried it in different PCIE slot on the mobo...same thing.
Sidenote: I was on Catalina with this same setup before running fine with the card but somehow something broke when I updated to latest version and system wasn't booting. Decided to go back down to Mojave with a fresh install.
I have my EFI folder here: https://www.dropbox.com/s/npyabsbx8ll4ai2/EFI.zip?dl=0
Any help is appreciated. Thanks 🙏
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