Waiting for /dev for fully populated

[mcflym]

Hi,

i got a new Board (Supermicro X10SL7 with LSI 2308 SAS Controller (disabled on boot)).

After grub ist starting proxmox i get this error:



But proxmox is reachable by Web-GUI!

If i enable the LSI Controller the same error occures.

Some idea?

thanks..

Edit:

Even if i passthrough the LSI Controller to a debian VM the VM won't boot:



The Controller/HDDs is shown up at the installation of debian and gparted etc..

If i passthrough to a Windows VM the VM boots and recognizes the Controller (but missing drivers).

Edit2:
Flashed the Controller in IR-Mode. Now it is working with debian VM. But the proxmox host still hangs on "Waiting for /dev for fully populated".