Can't start vm after adding GPU: failed to set group container: invalid argument

Hi, I have a scale installation on a supermicro mini it’s board with an epyc 3201 CPU. Now, I have a docker vm and would like to pass a GPU for plex. The GPU is a Intel arc a310.

After installing the GPU on the system, I’ve proceeded to set the the GPU isolated (I have 2 GPU: onboard from ipmi and the arc) and rebooted.
One strange thing is that when I have isolated the GPU I had to refresh manually the page because I didn’t see any confirmation message.

Then I’ve added the GPU to the VM but the VM won’t start anymore. The error is:

Failed to start VM Ubuntu_Docker: [EFAULT] internal error: qemu unexpectedly closed the monitor: 2024-09-19T20:22:53.202365Z qemu-system-x86_64: -device {“driver”:“vfio-pci”,“host”:“0000:08:00.0”,“id”:“hostdev0”,“bus”:“pci.0”,“addr”:“0x9”}: vfio 0000:08:00.0: failed to setup container for group 23: Failed to set group container: Invalid argument

Any hint?