Z2M died inexplicably :(

Configuration Zigbee
1

OK has anyone any ideas on why my USB dies inexplicably every few months?

I got home yesterday and realised, again, my landing lights are not working. Then realised pretty much all my zigbee devices are dead.

Here’s the z2mqtt start up logs…

[23:11:44] INFO: Preparing to start...
[23:11:45] INFO: Socat not enabled
[23:11:46] INFO: Starting Zigbee2MQTT...
Zigbee2MQTT:info  2023-02-15 23:11:50: Logging to console and directory: '/config/zigbee2mqtt/log/2023-02-15.23-11-50' filename: log.txt
Zigbee2MQTT:info  2023-02-15 23:11:50: Starting Zigbee2MQTT version 1.30.1 (commit #unknown)
Zigbee2MQTT:info  2023-02-15 23:11:50: Starting zigbee-herdsman (0.14.89)
Zigbee2MQTT:error 2023-02-15 23:11:50: Error while starting zigbee-herdsman
Zigbee2MQTT:error 2023-02-15 23:11:50: Failed to start zigbee
Zigbee2MQTT:error 2023-02-15 23:11:50: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start.html for possible solutions
Zigbee2MQTT:error 2023-02-15 23:11:50: Exiting...
Zigbee2MQTT:error 2023-02-15 23:11:50: Error: Error while opening serialport 'Error: Error: No such file or directory, cannot open /dev/ttyUSB0'
    at SerialPort.<anonymous> (/app/node_modules/zigbee-herdsman/src/adapter/z-stack/znp/znp.ts:146:28)
    at SerialPort._error (/app/node_modules/@serialport/stream/dist/index.js:76:22)
    at /app/node_modules/@serialport/stream/dist/index.js:112:18

I mentioned it previously (here) but surely I’m not going to have to keep reflashing the dongle every other month?

2

Which sonoff dongle?

Does dmesg give you any hardware clues?

3

Is your dongle plugged in directly or via a decent length of cable?

4

Via 2mtr cable & elevated up around 1.8mtrs from the NAS (which runs the VM for HA).

This one!

Huh? Sorry, I have no idea what dmsg is…

5

Cheap solution discovered… restored my VM from a few days before it went weird. Now working again as normal. Thanks for the help folks :slight_smile:

6

Have you tried using the id instead of TTYUSB ? There’s a post here about it

7

Thanks for this… so I’ve collected the ID but do not know where I am supposed to paste it?

/dev/serial/by-id/usb-ITead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_xyz123123123-if00-port0

8

Where you previously had the address, like /dev/ttyUSB0

9

Yep, I found it in the configuration.yaml and hashed out the /ttyusb0 and replaced it with the fuller ID. Thanks again :slight_smile: