Rfxtrx433 not working

I’m having problems with my RfxTrx433 USB devices in hassio.
I’ve installed hassio according to the instructions here: https://github.com/home-assistant/hassio-build/tree/master/install#install-hassio on my docker server (running ubuntu).

And my z-wave USB stick works fine, but I’m not able to get my rfxtrx433 working, it shows up in dmesg (as shown below), but it does not work in HA (I’ve added it as /dev/ttyUSB0). Any suggestions would be greatly appreciated!

/dev dmesg | grep tty
[    0.000000] console [tty0] enabled
[    0.676785] 00:06: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[   24.417211] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
[   25.889657] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0

What is the ouput of hass logging?
cat ~/.homeassistant/home-assistant.log

config example:
rfxtrx:
device: /dev/ttyUSB0
debug: True
dummy: False

logger:
  default: error
  logs:
    rfxtrx: debug
    homeassistant.components.rfxtrx: debug

Strangly nothing appears in the log file with your suggested config. I would assume it should give some sort of error at least…

Indeed, if you deliberately configured something that would not work for the rfxtrx you should receive an error message in the log.
Then back to basic:
see if your rfxtrx is able to be reached from your dock manually.

btw,
I just found out for the rfxtrx on 868 mhz, I don’t see any new sensors in the logging.
But if you press the < > (states) button in the web-ui, you’ll find new sensors, at least in my case.