GPU display help

I have a Huawei Mateview 4K plugged into DP 1 of my GPU. When I try and plug in a 4K TV to HDMI 1, the TV reads "No signal". It works fine in Windows, the HDMI port used to work with an older non-4K TV. The cable is fine and displays perfectly from my MBP. How would I fix it on the hackintosh?

Broadcom BCM4352Z Gigabyte Z270 Gaming 5 i7 6700 MSI Radeon RX580 EFI: https://drive.google.com/drive/folders/1H6To5GFGJrF1awmpKRqELf1Z3q_kbyJe

submitted by /u/Negative-Put3179
[link] [comments]