Passthrough Primary Nvidia 1070 to windows 10 not working

[TheSkaz]

I have a virtual machine that I am trying to pass one of my GPUs to. this GPU is the main one that unraid uses when it boots. the other GPU is used for plex. I have downloaded and modified the ROM from techpowerup and am utilizing it. 

 

This is how it presents in windows:

 

here is my relevant part of the VM Config:

 

when attempting to install nvidia drivers through windows, I get this:

 

and when I try through nvidia:

 

and if I follow those instructions:

 

Windows Version:

Edited August 11, 2020 by TheSkaz

[meep]

If you check the properties in device manager for the basic display adapter, you’ll likely find a -43 error.

 

nvidia drivers do not play nice when they detect the host is a vm.

 

please check the steps outlined in the link in my sig to get started resolving this.

 

 

[TheSkaz]

This is what I got:

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

 

ill try seabios (as per your link)

Edited August 3, 2020 by TheSkaz

[meep]

11 minutes ago, TheSkaz said:

This is what I got:

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

 

ill try seabios (as per your link)

Also for troubleshooting, try to not have vnc and gpu assigned at the same time. Use splashtop or some  other remote access software (not rdp). 

Edited August 3, 2020 by meep

[TheSkaz]

so far seabios has caused the windows install to take 12 hours or so....

 

I also just realized that I was installing the RTM version of windows 10.... that could have been an issue. 

[TheSkaz]

it was, in fact, the RTM version that was causing the issue... installed the 1909 version and it worked.

[TheSkaz]

ok, after upgrading to 6.9.0-beta25, and using Windows 10 2004, It showed correcly as above, but is not functional within the VM. Here is what GPU-Z shows:

 

it shows 0 memory here, and 4GB memory elsewhere. its an 8GB card. I am using the correct ROM. EVGA 1070 SC ACX 3.0