I have created a very detailed guide on installing mojave on my 'HP EliteDesk 800 G2 TWR i7-6700'. It is located on github along with all the files @ sakoula/HP-EliteDesk-800-G2-6700 .
I am currently using two monitors on my setup out of the stock HD530 (Display Ports) by just doing some Framebuffer patching on 10.14.2. I will update the guide once I am not having any side effects. The guide as it is, is working fine for one monitor.
I have also did some ACPI HotPatching in order to be 'hackintosh friendly'. My way of patching things are a bit different of what is being used in this thread. I am still learning here and I tried to keep the guide as simple as possible but also justify all the moves that I have made.
BTW why don't we move the thread under mojave?
Let me know if you have any issue or question.
Did you use Displayport for both monitors? As far as I read, using VGA is impossible.Your guide looks amazing. Would you mind to teach me how to make HD530 working with two monitors? I am using a Pro Desk 600 G2, everything else works all right except one monitor keep having no signal.
Yes, it has 3 ports (2xDP and 1xVGA). I am using 2 DP to HDMI adaptors . it is funny that the starting apple icon is on one screen but after that the second screen shows login picture and stay on.Did you use Displayport for both monitors? As far as I read, using VGA is impossible.