External display not working (laptop open core)

Hey !

I'm facing an issue with my Hackintosh.

I have the matebook 13 (2019 - i5 / UHD 620) running Catalina 10.15.3) with open core.

I followed a guide for this specific laptop, made by a guy named Edoardo (can find the guide searching for "Edoardo matebook 13 GitHub").

Everything is working fine (mic, BT, Wifi, etc) except external display.

When I plug in my 1440p external monitor via DP, it detects it but screen keeps on flickering as it was detected then disconnected, and then detected again then disconnected, etc.

External display remains black, but laptop display shows and I can see in monitor properties that the external monitor is detected.

I'd like to fix this, as I know it can work (it worked in the past, when I was using Clover instead of Opencore).

Please let me know what additional info I can provide to help you help me :)

Thanks !

submitted by /u/mibsow
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