[Solved] Can you mix 9 series with 10 series? (2x 980Ti + 1x 1080Ti, nMP) - YES... BUT...
Previously I had 2 x 980Ti working with the nMP and I wanted to test if all 3 cards work together. It doesn't appear to be the case.
If I boot with the 2 x 980Ti and the 1080Ti macOS won't startup - no chime.
If I detach the 1080Ti and boot with the 980Tis connected it all works as before.
My question is: Is it possible to mix the 9 series with the 10 series cards?
It may well be that I need to update the 980Tis to 10 series cards in order to get them all working...
Has anyone else run into this or has a fix / workaround?
What a stupid &*$%ing mess eGPU is. Any reasonable number of cards from any manufacturer should be plug and play. Shame on Apple.
Check some of Mcarver316 posts on this board for at least some more information, if not a solution (yet). Also MVC has stated that they will be selling cards to work specifically on the nMP soon. No idea if this EFI will address your issue, however.
MP 6,1 | 4c | d700
MP 6,1 | 6c | d500
Certain MBPs can drive up to 3 eGPUs from different families, including AMD, and I have been reported the nMP can drive up to 4 Nvidia eGPUs with my script. It's 6 GPUs in total.
Yes, the -a mode solves the startup issue. I can't much help with systems to which I have no access to.
Thanks! I appreciate the reply and I'll give it a try on Monday.
It seems very odd that you couldn't mix the cards.
The 1080Ti is an EVGA Founders Edition and the 980Tis are both EVGA FTW - not sure if that would make the slightest bit of difference but noting it anyway.
-a mode does not solve the startup issue. Still won't get past the Apple loading screen with any combination of 980Ti and 1080Ti connected.
However, I moved my 980Ti eGPUs to different ports and moved my Thunderbolt Display to the lower left port and now I can boot with the 980Tis connected and I don't have to plug the Thunderbolt Display in once I get to the login screen so some good has come out of these tests.
Just need to figure out why the 1080Ti is blocking the boot process.
Any suggestions welcomed.
It does solve the startup issue (POST) and shows Apple's startup manager, right? That's what I meant.
The kext loading after that is another problem. An extra delay might be necessary.
Try a boot delay on the 1080 Ti enclosure. You can leave the Thunderbolt cable plugged in with the power to the 1080 Ti enclosure off. After the boot chime ends, count to three and power it on.