Hey guys!

 

As the title says, I would like to know if anyone has managed to passthrough NVIDIA GTX 1070 to Windows 11 VM on Unraid 6.10-rc2? I would really need some help. I can't seem to find a way to pass it through. I tried almost everything with no success, the drivers still spit out the infamous error code 43.

 

I think the main thing to point out is that the GTX 1070 is installed in the 4th PCIe slot as a secondary GPU, with the primary one being some old MSI ATI RADEON. In addition to that, without ACS overwrite, the GPU is split into two components, the GPU one and the sound one, both being in the same IOMMU group.

 

What I have already tried:

• dumping the vBIOS
• deleting the "VM detection"
• disabling Hyper-V
• enabling ACS overwrite
• changing the underlying machines (between i400fx and Q35)
• booting Unraid with "bind to VFIO" enabled
• reinstalling Windows 10 and 11 in VM
• basically all possible combinations of those.

 

That's why my question here is: has anyone managed to pass the GTX 1070 through to Windows 11 VM lately on new Unraid version (or to Windows 10 VM on the latest stable Unraid 6.9.2)? Any help is truly appreciated, I already spent more than two weeks trying to get this to work.

 

Have a great one guys and stay cool!

 

Thanks!

------------------------------------------------------------------------------------------------------------------------------

Keywords: windows, vm, gpu, passthrough, nvidia gtx 1070, secondary gpu, IOMMU group, error code 43

Edited February 20, 20224 yr by bxnny
Markdown

Where is diagnostics?

After long day finnaly figured it out. The key was using NVC as primary graphic card and 1070GTX as secondary. Than i downloaded latest drivers for graphic card and vola.. It works both on Q35 and i440fx.

 

 

Edited March 5, 20224 yr by shibby1825