ASUS Radeon R9 280 Dual Monitor not working

Doctor Breen

New member
May 11, 2020
Hi guys,

I've been running AMD OSX on my R9 280 smoothly for a while now. Just recently I decided to hook up my second monitor for a dual monitor setup.

Unfortunately though, the second screen does not recieve a signal. It is recognized by macOS (I can change the Arrangement in Settings) but the monitor stays dark.
The main monitor is connected via HDMI and the second one is connected to one of the two DVI-Ports with a DVI to HDMI adapter.

Has anyone had the same issues and was able to resolve them?

I have tried changing some Clover settings (I'm still running 15.1 because I don't have the time to read into OpenCore right now) but to no avail.

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