My Zigbee network used to run fine for many months (using ZHA). Last week, I’ve upgraded my OS from 13.1 to 13.2. Immediately after booting, HA crashed. The last entry in the homeassistant.log file is:
ERROR (bellows.thread_0) [ bellows.uart] Lost serial connection: SerialException('device reports readiness to read but returned no data (device disconnected or multiple access on port?)')
Even after rolling back to version 13.1 of the OS, the issue is not resolved. I’ve ruled out an issue with the Sonoff Zigbee stick itself by connecting it to spare RPI4 with HA. That just worked fine.
I’ve tried different USB ports, but without luck. Sometimes the Zigbee network is up for a few minutes untill HA crashes again with the above log entry in the logfile.
I am not sure anymore what to do next.
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