Conbee on Proxmox VM not creating /dev/ttyUSBx or ttyACM0

Hoping someone can help (I’ve also got an issue raised with deconz but don’t really think it’s their issue).

I’m running proxmox 5.4 on an intel NUC. On top of that I have a VM (not an LCX container) running Ubuntu 18.04 server. On that, I’m running docker and with a hass and a couple of other things. All good so far.

I’ve got a Conbee-II plugged in, and I’ve passed it through to the VM. In the VM O/S the stick is showing up when I run lsusb, I can see entries in dmesg, but it’s not in /dev (assuming it should be /dev/ttyACM0 or /dev/ttyUSB0) - I have no other USB devices.

lsusb output

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 1cf1:0030 Dresden Elektronik
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

dmesg output

[ 9.464250] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[ 9.922364] usb 3-1: New USB device found, idVendor=1cf1, idProduct=0030
[ 9.922926] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 9.923596] usb 3-1: Product: ConBee II
[ 9.923941] usb 3-1: Manufacturer: dresden elektronik ingenieurtechnik GmbH
[ 9.924588] usb 3-1: SerialNumber: DE1963697

So, 1st question is has anyone got a Conbee working in a proxmox VM?
2nd question did it “just work” or did you need to do something?
3rd question any ideas what else I can try?

thanks in advance

See is there is amything in here.

ls /sys/bus/usb-serial/devices

that folder doesn’t exist on my system

I have a /sys/bus/usb with a number of sub-folders

Not sure where to go from here.

lol, nor me - thanks for taking an interest though.

This is my USB hardware setup:

And I use this script: https://github.com/whiskerz007/proxmox_hassos_install

With this I have this hardware configuration in HassOS:

It is rather old - but I have the same problem (also on NUC).
I asked for advice in other posts/forums, but none is helping.

@doubleUSA - Do you also use IntelNUC? Or other kind of PC?

I also have this problem with a CC2531 Zigbee stick. It shows up on the host as /dev/ttyACM0 but when I pass it through it doesn’t appear in the VM.

Debian 10 Cloud Init.
lsusb is empty and dmesg shows nothing about USB on the VM.