Specs:

Gigabyte Z170 HD3P

Sapphire R9 390

I7 6700k

My only issue is that the HDMI output isn't working.

I got everything going great on my home setup with displayport. But when I took my computer to work I only have hdmi monitors. Everything seems to be working until about half way loading OS X El Capitan. The screen goes black and the monitor says no signal.

The hdmi on my r9 390 works fine if I don't inject an ATI FakeID. But I only have 7mb of vram if I do that so I need a better workaround. I'm injecting the r9 290x/390x for the record.

I think an easy fix would be to try a display port to hdmi cable but then I for sure can't use two monitors. Even though I'm only using one now.

I've tried PCIRootUID=0 and =1. And I've tried booting into safemode. Neither of those work.

submitted by /u/LoafsBread
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