The Kepler series of Nvidia Cards are natively supported in macOS, all recent versions up to and including Big Sur. There is no need to add any boot arguments, SSDT's, or additional kexts and they never needed the NVIDIA Web Drivers.
I run quite a few of these Kepler series cards on my hacks and even on a real Mac. The cards I use including the following:
- GTX 780 Ti - Mojave and Catalina (Haswell Hack)
- GTX 690 - Catalina & Big Sur (AMD FX hack)
- GT710 - Catalina (Server/HTPC Hack)
- Quadro K4200 - Catalina and Big Sur (Haswell Hack)
- 2 x Quadro K600 - Catalina (Pair of HP Microserver Gen8 Hacks)
- Quadro K1100m - Mojave (2010 iMac i7-870 (real Mac) Hacked with OC)
Depending on the system they are installed in to some don't require WhateverGreen.kext, in fact they won't work correctly with WhateverGreen installed. This was most prevalent with the Quadro K4200 card when it was installed in a Skylake HP Server.
I would recommend
@HackG521 do the following:
- Remove and and all Nvidia based boot arguments, kexts and patches from the system.
- Run the system with just WhateverGreen.kext providing Graphics fixes for the Titan card.
- If that doesn't help, remove WhateverGreen.kext and see if that changes anything.
I think I used
Inject Nvidia=true graphics option at some point for a couple of the cards, when running Mavericks, Yosemite and El Capitan, possibly Sierra too.
OpenCore doesn't have an equivalent quirk for this Nvidia graphics setting. If the Titan card is running on an OC booted system that fix is not an option.
I used to run the Haswell/GTX 780 Ti system with every version of OSX and macOS, from Mavericks to Catalina inclusive, on two SSD's until recently. One SSD formatted HFS+ running Mavericks to Sierra, the other formatted APFS with three containers for High Sierra, Mojave and Catalina. The system ran using Clover and the iMac 14.2 SMBIOS. They all worked just fine with no need for NVIDIA Web Drivers or any Nvidia specific boot arguments.
Let's see what HackG531 is using before we go any further.