[Solved] Sierra update 10.12.5 + GTX670 + HD4000 = blank screen on GTX670. Help?

[jayw8888]

FIXED..

Hi;

My setup is ASROCK Z77Pro3 i7-3770 with GTX670 running three monitors, one on HD4000 and two on the GTX670. They have been working fine for the past few years up till now.

I installed the combo update for 10.12.5 couple of days back and that started the problem.

The HD4000 is still running fine and is the first monitor that is booted into.

The GTX670 is detected in the system report menu but somehow refuses to connect to the two monitors that they are attached to.

What I have done:
- Tried to rename the graphic adaptors HD4000: GFX0 to GFX2 and GTX670: PEG0 to GFX1 using Clover patch... No go, even with other permutations IGPU, PEGP to GFX1(or 0)....
- install Nvidia web drivers and with negative results...
- recompiled kexts
- unplugged GTX670 and replugged..
- unplug monitors connected to GTX670 and replugged while system running

I see that the system detects the GTX670 but its not enabling the monitors.. is there something I missed? Any advice and help will be appreciated!

Other info:
- clover v4077
- SSDT for power management
- MacMini6,2 profile MAC-F65AE981FFA204ED


Thanks in advance

 

[jayw8888]

OK I seem to have fixed it by using the Lilu.kext and NvidiaGraphicsFixup.kext into EFI/Clover/kexts/Other

Odd I thought that this was for Nvidia cards 7xx and above.

I am glad its fixed though..

 

[slim.jim]

OK I seem to have fixed it by using the Lilu.kext and NvidiaGraphicsFixup.kext into EFI/Clover/kexts/Other

Odd I thought that this was for Nvidia cards 7xx and above.

I am glad its fixed though..

It is for any NVIDIA GPU when using the web drivers and some select SMBIOS.