I seem to have run into a situation with the 970- here is a brief backstory of how I got into it:
I used unibeast/multibeast/chameleon and managed to boot perfectly with the 970, had all ports working, card was displayed in "about this mac" and showed up in system report, good benchmarks, etc.
I just switched from chameleon to Clover in hopes of fixing iMessage and Appstore, as well as learning a bit more about clover since I've heard its a more in-depth boot loader (maybe this is a bad thing for a noob like me...) I was able to boot into clover just fine.
NOW back to the 970... The card still works well as far as benchmarks go, actually I have a 1fps increase in cinebench (go figure lol), BUT
the HDMI port no longer sends signal AND it doesn't display in "about this mac" - when i go into system report and look under Graphics/Displays it says:
Chipset Model: Unknown
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 0 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x13c2
Revision ID: 0x00a1
ROM Revision: 84.04.1F.00.70
I basically just want the card to show up and be recognized along side it working.
Below is what I think may be relevant parts of my build, and below that is my config.plist... I'm hoping I just made a simple check box mistake in the clover configurator, but I'm going to post here in hopes someone with more experience can spot the error before I go tinkering on my own. Infinite thanks for any help
BUILD
CPU: i7-4790k
MB: GA-Z97X-GAMING-GT
MEMORY: 32g HyperX Savage 1866
STORAGE: 1TB Samsung 850 PRO
CONFIG.PLIST
View attachment config.plist
If you are being so kind as to take the time to help me and you need more information just let me know and I'll share it as soon as I can (chemistry lab coming up so I'll be gone for the next 3 hours
Edit: It appears I'm not getting any sound from front ports either... maybe I shouldn't have messed with clover