han310

I've been around some other threads around here and one came up with this just now. I've been able to boot up almost every time. 

Drivers are already installed. 

eGPU is already powered on but not connected. Macbook is powered off. 

Boot into windows, but insert the thunderbolt cable into mac right after the windows logo appears. 

This is in win8.1. 

I'm gonna try it in win10 maybe tomorrow. 

Do you mind sharing your boot process? 

Hi. Sorry if this has been answered somewhere but it's still a little unclear to me... 

Is it possible to get an eGPU running on the 2015 rMBP 15" without the dedicated AMD card in BootCamp? 

I ask this because I had everything working with my old 2014 rMBP 13" in Win10. Except I can't seem to get it working on this new 15".. 

and I've seen people who've gotten it working here with a 2015 13" and 2015 15" with dGPU, so it's probably something I'm doing wrong? 

edit.

whoops think i posted this in the wrong place. 

Try starting the Macbook, immediately closing it after pressing the power button. My configuration shows the following behavior: the background light is activated and stays turned on, however the internal screen is not rendered. Neither does it show anything (staying in Apple Logo) nor does it appear in the system profiler / monitor settings. So I conclude that (though the display light is activated) that I can use something like a clamshell mode.

Thanks for the suggestion! Just tried it and it doesn't work... Everything else is working so I guess I can just live with it for now.

So I took a look running a few games on the OSX side and found that unless I make my external monitor my "main monitor" it will be opening them on the internal screen running with the Intel Iris Pro. As soon as I set my external monitor to the main monitor in the displays tab "about this mac" it now has both monitors coming up as my gtx970. Unfortunately, mine does not revert back to the iGPU when I adjust settings, so I can't really comment on that :/. If you are simply trying to "turn off" the internal screen all you have to do is turn your brightness to 0 and your internal screen is off.

Normally, when you would close the lid, it goes into clamshell mode. But that doesn't seem to be working with eGPU. What I really want is for the internal screen to not be rendered at all, so turning down the brightness isn't really an option :/

When I say that it reverts back to the iGPU, all signs point to the fact that the dedicated card is working, except when I run heaven benchmark. Normally I get around 22fps on high settings with the GTX 960, but when I change any display settings (like mirroring the internal display to the external display), the benchmark goes down to 4fps. So yeah....

I have a question.. After I run the script, the displays tab in "about this mac" shows my gtx960 for both the internal display and external. How come it's different from yours? Running 10.10.4 as well.

Also, is there any way to disable the internal display so that only the external display is working? If I mess with any display settings, I think it switches back to the iGPU.

edit. i have a 2014 rMBP 13". And the egpu is currently working.

Hey guys! Pretty awesome work you guys are doing here!

My setup is a 2014 rMBP with Akitio Thunder2, GTX 960, and Dell DA2.

My question is: Is there a way to get clamshell mode working? Or disable and reenable the internal display easily?