Hi
I'm experiencing unsolved problem trying to install a non-EFI GTX 980Ti in my 2009 Mac Pro with Yosemite 10.10.5
I of course installed the latest WebDriver 346.02.03f01.
All I get is a black screen.
I have tried several processes, thanx to all the info I got here :
- Uninstalled the previous Nvidia Driver and Cuda Driver
- Booted using a GT120
- Did the "nv_disable=1" trick described in point 24) of the first post of the thread
- Tried to uninstall and re-install the driver using a AMD card
- Reseted NVRAM
- Followed what was described in
this thread by DMCDesign, using my AMD card
Well, after a whole day of trying different solutions, I still have the same result: black screen from the 980 Ti
(I have only connected my screen to the DVI port as I don't have any Displayport adaptator at the moment)
The 980Ti is plugged via two cables from the motherboard, one is a 6-Pin, one is a 6-to-8-Pin.
The card green letters lighting is working
In system info, the card appears as NVIDIA Chip Model with... 256 Mo of VRAM (!!)
In NVIDIA Driver MAnager, the slot where the card is says pci10de,fb0
(well actually it's very strange, as the GT120 is in slot 1 but presented in the manager as in slot 3, and same vice-versa with slot 3 where is the 980Ti)
Here is my setup :
Mac Pro 2009 4,1 upgraded to 5,1 / 12X3,46
OS X 10.10.5
Apple HD Displays 30" / 23"
EVGA Standard GTX 980Ti
I have an extra GT120, a GTX 480 from Macvidcards, and another Radeon, if that can help for a process..
I really don't know what to do now, if someone has encountered the same issue and found a way out, please let me know, thanx!