A bit of NVidia 970M weirdness on an ASUS RoG G751JT

So I've been running my G751JT for a couple months now and I can vouch for it being a great laptop for hackintoshing. It's a gaming laptop with a 970M but without Optimus, so full GPU acceleration works. The issue I'm running into is with external displays.

• Plugging in an HDMI monitor works most of the time
• Plugging in a VGA monitor works most of the time
• Unplugging an HDMI or VGA monitor causes the internal display to freeze on a static image and it's no longer recognized by the system. If I plug the external display back in, the external display will still work. I have to reboot to get the internal display back.
• With some HDMI monitors, the internal display will go dark from the start and will not be available , I have to reboot to get it back.
• The Thunderbolt port doesn't work with mdp->hdmi adapters at all. That's okay.

I'd like to use this for VJing without having to set up a desktop at venues, but I need at least 2 predictable outputs and can't lose my internal display. I've been able to make do with a triplehead2go from the VGA port, but it's not ideal. If possible I'd rather not have to depend on VGA at all.

• I'm running the latest web drivers, nvidia seems to have pushed out a second update today
• I use Clover
• Acceleration does seem to work well on all ports when they work
• The internal display is listed as being Displayport rather than LVDP
• The backlight controls aren't available for the internal display, possible because it's connected by an internal displayport or possibly because I need to edit my DSDT to control it. This may be related to the main problem.
• I've tried injecting the EDID of the internal display through Clover, but then Clover itself won't load. I haven't tried overriding the EDID in any other way yet.
• I've tried using a custom EFI string in Clover
• I've tried setting the number of ports to 4 in Clover
• I've tried the NvidiaGeneric flag
• I haven't tried the display-config string in Clover as I haven't found a good guide for it

Any ideas?

submitted by preacherk
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What is missing? Please comment to help!

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