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Mac Pro 5,1 RX580 Display Issue

Joined
May 17, 2020
Messages
1
Motherboard
Mac Pro 5,1
CPU
3.46
Graphics
RX580
Mac
Mac Pro
Hi,

This is my first post on this forum. I recently purchased a Mac Pro 5,1 and upgraded it to a brand new RX580. My Mac is connected to my Marantz SR5011 receiver which is then connected to a Optoma HD243x projector. I initially bought a Sapphire RX 580 Nitro+ and it had no issues with the display, but I had to replace it with the Pulse as the Nitro+ blocked one of my PCIe ports.

Since switching to the RX 580 Pulse, my Mac doesn't display on the projector until I unplug the HDMI and plug it back in again. The display sometimes comes on when I restart it but most of the times, even when restarting, I have to unplug and replug the HDMI cable. I have tried with the display port and still no dice. All my HDMI cables (HDMI 2.0) and display port cables are high quality and are all HDCP 2.2 compliant. I am running Mojave with no additional kexts, which was also the case with the Nitro+.

Is there anyway to fix this?

Thanks
 
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