Quadro 4000 for Mac Issue (Both Apple and Nvidia are stumped)

[Marc Clancy]

Yea, me too.

… “Welcome to Whit’s End. If you take a look to your right you can catch a glimpse of PCIe Slot # 2 …”

Mac Pro 5.1
Atto Celerity FC
DeckLink HD Extreme 3D+
Quadro 4000 for Mac
ATI 5770

[Toby Risk]

Wow, this is a real stinker.

The one config you don’t say you’ve tried is the Nvidia on it’s own in slot 2.
Without the ATI occupying the power or bandwidth I wonder what the result is. I wonder also if by just doing that, it will kick the PCIe firmware hard enough that if it shows up as x16 on it’s own, it may remember that setting for slot 2 when you replace the ATI back into slot 1.

Otherwise i think you are into trying different card combinations.

Toby

Colourist | Editor | Post-Production Consultant — 23 years at the post-production coalface, and still loving it.

[Margus Voll]

I have 4000 in slot 1 and it is perfect.

It did not show up in slot 2.

Did you get it runing like 4000 in 1 and ati in 2 ?

My initial plan was to put 4000 to 1 and 2 and 120 to 3 😉

—

Margus

https://iconstudios.eu

[John-michael Seng-wheeler]

As someone who practically troubleshoots for a living, (Video production is my trade, but I seem to get hired for my troubleshooting oftener then not.) i have a few suggestions that haven’t been mentioned yet in this thread.

0) I also would like to know what happens when just the Quadro is installed in slot 2.

1) from all that you’ve said I’d have to conclude that it is the number 2 pci slot that it the problem. Ether the power coming from it is slightly out of spec, (not enough to through off the ATI card, but only the higher end Quadro) or possibly, though less likely, something in the data (Again, only the Quadro is affected for the same reason.)

2) did you try resetting the NVRAM with only the Quadro installed?

Also, I wouldn’t advise this exept as a last resort, cause weird stuff can happen when you do stuff like this, but try starting the Mac with NO GPUs at all.

If I think of anything else helpful I’ll let you know.

Is the Mac Pro under warranty?

[Marc Clancy]

Yea, the Mac Pro is under warranty and Apple begrudgingly offered to get me a new board… But I’m working on some non-Resolve stuff too and it is gonna take them over a week to get the computer back to me. So it’s an option, just not right at this second.

Quadro all by itself in slot #2 is the same: x1 PCIe lane.

I’ve got another MacPro 5.1 with a 4000 coming back to me on Tuesday, so I can then check slot #2 with that card and that computer with this 4000… Hopefully that will pin-point the problem.

I haven’t reset the NVRAM with only the Quadro in it, but I’ll give it a try.

Marc

… “Welcome to Whit’s End. If you take a look to your right you can catch a glimpse of PCIe Slot # 2 …”

Mac Pro 5.1
Atto Celerity FC
DeckLink HD Extreme 3D+
Quadro 4000 for Mac
ATI 5770