PROXMOX/DOCKER | FATAL: rtlsdr: error querying device #0: No such file or directory

[einzelfabrik]

Hello everyone,
I have a special constellation - and am failing to pass the hardware through to the container.
About the setup: I have a Proxmox Host VE 8.2.2 - the RTLSDR stick is connected to it.

root@proxmox:~# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
Bus 001 Device 004: ID 0bda:2832 Realtek Semiconductor Corp. RTL2832U DVB-T

I have an LXC container running with Docker + Portainer. I have adapted the config of the LXC container:

lxc.cgroup2.devices.allow: c 189:* rwm
lxc.mount.entry: /dev/bus/usb/001/004 dev/bus/usb/001/004 none bind,optional,create=file

So the USB port(001-004) is available in the container - but how can I then pass it on to the ultrafeeder Docker container?
The corresponding part in my compose file:

        "Devices": [
            {
                "CgroupPermissions": "rwm",
                "PathInContainer": "/dev/bus/usb/001/004",
                "PathOnHost": "/dev/bus/usb/001/004"
            }
        ],

All attempts ended in FATAL: rtlsdr: error querying device #0: No such file or directory - can you give me tips?

[kx1t]

We generally don't provide support for ProxMox or container-in-container configurations (meaning: it may work but you're on your own); however:

• if you have made your USB port available to the ProxMox environment, then you can either use the devices: directive, or expose the cgroup directly to the Ultrafeeder container as shown here lines 11-12 and 109
• we have heard about issues with people having USB passthrough issues on ProxMox - best would be for you to ask on our Discord server where there are other ProxMox users who may be able to assist