R9 270X multi screen problem with Mojave

I have an hackintosh with a Radeon R9 270X and I recently upgraded from High Sierra to Mojave, and the only problem I have now is that I can't use two screens at once anymore, but only one. If I use both of them one becomes green for a few seconds and goes black and the other one is always black. Is there a way to fix this?

submitted by /u/gsoftwares
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