Hi Shilohh,
I just purchased a second 780GTX for my setup and I have the same issue as Poine did like 20 threads back...
I have my first GTX780 in Slot1 on the MB and the 2nd GTX780 in slot 3 on my MB. I also have the Extreme IV like yourself. So I'm using Slots 1 and 3 for SLI config according to the manual.
Now when I boot the system simply halts on PCI configuration (I noticed this doing a verbose boot) and then the system keeps rebooting... btw, it totally resets all your BIOS settings.
I managed to get into my MACOSX by disabling slot 3 on the Lane Switch, great tip!
Can you please help me with creating new SSDTs?
Thanks so much in advance.
Let me know if you need any input from me?
Thanks.
[UPDATE]
I applied the same SSDT1 and SSDT3 files like you prepared for Poine and now I got both GPUs working at the same time (Switches 1 and 3 ON).
However, I only got this to work after deleting the DSDT from the EFI.
I tried making a new DSDT but that causes issues. It won't go to the logon screen.
Am I doing something wrong here?
[ FIXED !]
Dang i got it to work, thanks to your TIP to force the DEVICE to INJECT TRUE in the CONFIG.PLIST.
This did the trick. I also created a new DSDT and all booted up perfectly fine now.