NVIDIA GPU Passthrough - working then: Failed to initialize NVML: Unknown Error

[stormy27]

Hi all!

My problem: GPU Passthrough (GTX1070) is working some minutes then proxmox disable/deactivate it! Only reboot can re-enable for short amount of time....


Using PROXMOX 8 server I'm trying to enable my NVIDIA GTX 1070 in passthrough mode to one of my VM.
(followed the thread here: https://gitlab.com/polloloco/vgpu-proxmox )

Everything was correctly done, with confirmed 'nvidia-smi vgpu' enabled and so on under PROXMOX. I used the patch driver also, latest release 16.






It's working on the VM Windows is correctly detecting the NVIDIA card
BUT after some short time the driver TOTALLY disappears directly on PROXMOX.



root@pve:~# nvidia-smi vgpu Failed to initialize NVML: Unknown Error

root@pve:~# mdevctl types gives no answer


And under the (previous) working VM with GPU passthrough the NVIDIA is no more showing MEDIATED "YES" .....




Of course everything was fine before....

My motherboard is using a RYZEN 5700G CPU, 128GB RAM. IOMMU enabled and all BIOS options (SVM etc)

Impossible to retrieve a working NVIDIA system. I've read many many things but I feel lost.
Only rebooting the PROXMOX server and I find again the working answer to the commands "nvidia-smi", "mdevctl types" and "nvidia-smi vgpu".

For a short amount of time again.... because it's staring again.

I don't know what to do know. So weird!


Could you please help me?? How can I test ? Check ? Thanks !


I found this in the /var/log/kernel file




Here are some screencopy showing the GPU NVIDIA correctly shown under my Windows VM using the GPU passthrough (here is an AI object recognition project)