Getting Cannot obtain unbindLock for 0000:25:00.0 when trying to enable vGPU

Hello,

I am having trouble getting vGPU setup for some of our newer systems. Specifically these are Dell PowerEdge R7525 with AMD EPYC processors and 3x Nvidia A40 GPUs.

The OS is Ubuntu 20.04 and I am using the latest NVidia vGPU driver: 510.108.03

root@srv-p24-14.cloud.ccr.buffalo.edu:~# nvidia-smi 
Fri Dec  2 19:35:29 2022       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 510.108.03   Driver Version: 510.108.03   CUDA Version: N/A      |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA A40          On   | 00000000:25:00.0 Off |                    0 |
|  0%   30C    P8    30W / 300W |      0MiB / 46068MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
|   1  NVIDIA A40          On   | 00000000:81:00.0 Off |                    0 |
|  0%   29C    P8    32W / 300W |      0MiB / 46068MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
|   2  NVIDIA A40          On   | 00000000:E2:00.0 Off |                    0 |
|  0%   30C    P8    29W / 300W |      0MiB / 46068MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|  No running processes found                                                 |
+-----------------------------------------------------------------------------+

I am following the guide that comes with the driver and when I try to enable them with the sriov-manage utility I get the following error:

root@srv-p24-14.cloud.ccr.buffalo.edu:~# /usr/lib/nvidia/sriov-manage -e ALL
Enabling VFs on 0000:25:00.0
Cannot obtain unbindLock for 0000:25:00.0

I verified that srv-io and iommu are enabled in the BIOS and I used the displaymodeselector --gpumode and disabled the display ports.

I am stumped here.

Any help would be greatly appreciated.

Thank you,

Salvatore