Various boot errors when GTX 660 is installed

[jackinthebox11]

Specs:
Mobo: ASRock Z77 Extreme4
GPU: Gigabyte GTX 660 OC

I can get a perfect installation (audio, ethernet, sleep/wake, integrated graphics, etc.) using UniBeast and MultiBeast without the GPU plugged in.
However, when it comes time to install the GTX 660 I get various errors during boot and I cannot make it to the OS at all.

- I have tried with and without the NVIDIA drivers, but everywhere I've searched I've seen that the GTX 660 is compatible with 10.8.4, natively.
- I've tried using the different drivers that come with MultiBeast to no avail.
- I have tried (3 times now) re-creating my boot USB with UniBeast and going through the install, setup, etc. all with the exact same result.
- I have tried many common boot flags in various combinations (GraphicsEnabler=Yes/No and nvda_drv=1 mainly.)

Here is the verbose boot with only the -v flag:


Any idea on how to get past this would be greatly appreciated. Cheers.

 

[cjgarof]

Maybe try npci=0x3000 in your kernel flags of boot.plist (I don't have nvda_drv=1 because I'm using the official driver on my gtx 770 instead of web drivers)

<key>Kernel Flags</key>
<string>npci=0x3000 darkwake=0</string>

 

[jackinthebox11]

Thanks for your suggestion.

These are the flags I just tried (combinations of the one you suggested):
-v npci=0x3000
-v npci=0x3000 darkwake=0
-v npci=0x3000 nvda_drv=0 graphicsenabler=no



They all end up "waiting for remote debugger connection."

 

[jackinthebox11]

Some more hopefully helpful details:
- I have installed 10.8.4.
- ML is running on a Samsung 840 Series SSD.

 

[jackinthebox11]

SOLVED:
I had followed several guides that provided a DSDT file that enabled sound for the motherboard. I removed this file and now everything runs perfectly.

Credit: http://www.osx86.net/10-8-mountain-...-i-have-radeon-7950-gpu-low-res-screen-6.html