ConBee II not working on 2021.7.2

Configuration
1

Hi,

I just set up HA for the first time a few days ago, which still was Core 2021.7.1. I set up the ConBee II stick and paired a Zigbee enabled lamp (Paul Neuhaus Q LED panel), which worked fine - I could turn it on and off, change colors, etc.

I then updated to 2021.7.2 and the stick stopped working and the integration showed an error. I reinstalled everything from scratch today with the same results.

Hardware is an ODROID N2+ 4 GB model with a 64 GB SanDisk Extreme SD Card and the data partition moved to an external Samsung EVO 970 256 GB SSD.

This is the error from the log:

2021-07-14 17:25:44 ERROR (MainThread) [zigpy.application] Couldn't start application
2021-07-14 17:25:44 ERROR (MainThread) [homeassistant.config_entries] Error setting up entry ConBee II, s/n: XXXXXXXXX - dresden elektronik ingenieurtechnik GmbH for zha
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/config_entries.py", line 293, in async_setup
result = await component.async_setup_entry(hass, self) # type: ignore
File "/usr/src/homeassistant/homeassistant/components/zha/__init__.py", line 102, in async_setup_entry
await zha_gateway.async_initialize()
File "/usr/src/homeassistant/homeassistant/components/zha/core/gateway.py", line 152, in async_initialize
self.application_controller = await app_controller_cls.new(
File "/usr/local/lib/python3.9/site-packages/zigpy/application.py", line 74, in new
await app.startup(auto_form)
File "/usr/local/lib/python3.9/site-packages/zigpy_deconz/zigbee/application.py", line 80, in startup
await self.form_network()
File "/usr/local/lib/python3.9/site-packages/zigpy_deconz/zigbee/application.py", line 151, in form_network
raise Exception("Could not form network.")
Exception: Could not form network.
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2

I had the same issue when I tried to update to 2021.7.2 and today on 2021.7.3. I wanted to update this thread in case anyone else landed here after a Google search. I sought help from the HA Discord and found a solution. The recommendation from user ‘feyo’ did the trick:

Have you completely removed the usb passthrough in unraid, shutdown the vm, rebooted, then shutdown again and attached the device again? Sometimes passthrough is a bit finicky.

I am running Hassio in an Unraid VM. I followed these instructions and now the Conbee II is connecting fine and my ZHA Integration is working again.

3

Thanks, but I am using a physical machine (Odroid N2+) with the ConBee II directly attached via USB (using an extension cable).

I just fixed things another way though, should anybody stumble upon this:

  1. conneced the ConBee II to my Windows 10 machine (Enterprise x64, 21H1)
  2. downloaded deCONZ from Index of /win/ and installed it
  3. ran deCONZ to check if ConBee II was recognized (it was)
  4. ran the Phoscon web app and checked the firmware version (Menu → Settings → Gateway), Phoscon said I was on the latest version
  5. checked for more current firmware anyway at Index of /deconz-firmware/ and found one dated 7/13 (0x266f0700)
  6. manually flashed the latest firmware (instructions at Update deCONZ manually · dresden-elektronik/deconz-rest-plugin Wiki · GitHub)
  7. plugged the ConBee II back into the Odroid, booted up, device was recognized and usable again

TLDR: flashed latest firmware to ConBee II on another machine, everything working again

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