Mac Pro 5,1 doesn't show anything about my Quadro 4000 which was working fine until yesterday.

[Guest alexkalibur]

Hi,

My Mac Pro 5,1 has two GPUs:

Nvidia GForce GT 120 512Mo

Quadro 4000

 

I have a dual boot, one to boot on 10.9 (with the GT120), and another one to boot on 10.13.6 (with the Quadro).

Until yesterday, it was working correctly.

Now, I noticed that I have to plug my displays in the GT120 to use the MacPro. The Quadro is no longer showed in the system infos, everything shows only the GT120 as if I would have only one GPU inside.

 

How could I check what's going on ?

What could I test to...

 

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Source: MacRumors