Apparently all fixed -- issue is that all igpu ports are mapped to display port not HDMI. Below patch in opencore fixed it! Believe last thing for me to do is fix front USB ports, but not super urgent
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "
http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>DeviceProperties</key>
<dict>
<key>Add</key>
<dict>
<key>PciRoot(0x0)/Pci(0x1B,0x0)</key>
<dict>
<key>AAPL,slot-name</key>
<string>Internal@0,27,0</string>
<key>device_type</key>
<string>Audio device</string>
<key>hda-gfx</key>
<string>onboard-2</string>
<key>layout-id</key>
<data>
AwAAAA==
</data>
<key>model</key>
<string>8 Series/C220 Series Chipset High Definition Audio Controller</string>
</dict>
<key>PciRoot(0x0)/Pci(0x2,0x0)</key>
<dict>
<key>AAPL,ig-platform-id</key>
<data>
AwAiDQ==
</data>
<key>AAPL,slot-name</key>
<string>Internal@0,2,0</string>
<key>device_type</key>
<string>VGA compatible controller</string>
<key>framebuffer-con0-enable</key>
<data>
AQAAAA==
</data>
<key>framebuffer-con0-type</key>
<data>
AAgAAA==
</data>
<key>framebuffer-con1-enable</key>
<data>
AQAAAA==
</data>
<key>framebuffer-con1-type</key>
<data>
AAgAAA==
</data>
<key>framebuffer-con2-enable</key>
<data>
AQAAAA==
</data>
<key>framebuffer-con2-type</key>
<data>
AAgAAA==
</data>
<key>framebuffer-patch-enable</key>
<data>
AQAAAA==
</data>
<key>hda-gfx</key>
<string>onboard-1</string>
<key>model</key>
<string>Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller</string>
</dict>
</dict>
</dict>
</dict>
</plist>