valkjsaaa

On 4/13/2015 at 10:36 PM, MVC said:

goalque,

Great work and discovery ! The 980 won't work as there are no drivers in 10.9.5 for it.

And as far as the guy who asked about 2015 MB, there is no TB port.

I still think that some component of the more difficult eGPU has something to do with the physical machines. For instance, my 2012 rMBP does eGPU with the greatest of ease, I can run 4 displays form the Titan-X, or combine 2 DP ports and run a Dell 5K. Same thing on a Mini or nMP is currently impossible, and they run the same OS. As far as Intel frame buffer kexts, this might yield interesting results in comparing which one is used by my 2012 rMBP versus which one is used by 2014 Mini and your machine.

I think that the work we are both doing is heading in different directions to get to same result, and what you may find may help everyone. Right now I can't get display output on Maxwell cards in eGPU in TB2 machines I have in OS X. With Kepler cards I can get one display going. The display that works is the one that fires up right after the start chime via the EFI. Any further displays don't get detected. It is as if the machine is held back by a rule of some sort about number of displays, or displays present at boot time.

Anyhow, the smarter half of my development team will be joining the effort soon since we have gotten EFIs working for Classic Mac Pro for all released Kepler cards.

I don't know if you read at Mac Rumors but in the Mac Pro forum over there I detail a hack to enable Nvidia cards to run 4K 60Hz on MST displays. Buried deep in a kext there is a "blacklist" of machines that are NOT to run 4K/60Hz via MST. The Mac Pros pre-trash can are on the list. Also on the list is my 2012 rMBP. Removing a 4,1 Mac Pro from the list allows it to run 4K 60Hz MST displays from an Nvidia card. Conversely, it messes up how an AMD card deals with Hi Def displays. In short, I don't fully understand how that blacklist works, I just know that I can't run my Asus PQ-321Q properly without taking my Mac Pro off the list.

It is quite likely that Apple has more such blacklists hidden away to keep eGPU problematic. I just can't believe that it is a coincidence that with the models where eGPU could double it's bandwidth, there are new problems. (i.e., TB1 vs TB2)

I wonder if there is any chance that I can run 4K 60Hz MST with eGPU on 2012 MacBook Pro (retina)?

Thanks!

I have set up a eGPU system using Akitio Box and GTX 980Ti reference card. With the help of `automate-gpu.sh` I'm able to set the system up and running.

However, I have encountered a few glitches which makes the system not good for daily use.

1. Internal display won't close when the lid closes. I use disableDisplay to manually disable the internal display, but it still appears in the display menu. See attached 1.

2. Safari glitches. Safari somehow not working at all when eGPU is attached. See attached 2.

3. Minor problem. I have a UP2414q display which only support 4K@60Hz using MST. However, I can't find a way to make eGPU to support MST.