@axiom00 No I was not able to get it working.

@olivierlambert
The Quadro P400 is the entry level and have some limitation for exemple max of 2 encoding streams.

Maybe I'm doing something wrong like not blacklisting the nouveau driver correctly, but when it is still active the Nvidia Driver won't install and say you still have the nouveau driver active

anyone else as tried or have some thought about this ?

@olivierlambert
Hi,
I'm trying to get it work,

Ryzen 3900x 64gb ECC, with a Quadro P400
Windows 10 VM 20H2 with the driver R465 U2 (466.11) code 43 when I boot then I remove the driver from the manager and click on the search for new and it is installing the driver correctly without code 43.
Each time I reboot I need to do it.

In a ubuntu 20.04 vm with the latest driver from ubuntu 460
nvidia-smi
Unable to determine the device handle for GPU 0000:00:06.0: Unknown Error

Ubuntu 20.04 with 465.24.02 directly from Nvidia website
nvidia-smi
No devices were found

I also tried on 20.10 with the same result with or without a desktop