Thank you for hints,
I recheked on clear installation 2.5.9 on Debian 10. No logs regarding serial/Z-Wawe under /var/log, either under /var/log/openhab2. Last events.log contains:
2020-11-05 22:54:35.704 [hingStatusInfoChangedEvent] - âzwave:serial_zstick:ac6c6e88â changed from OFFLINE (BRIDGE_OFFLINE): Controller is offline to ONLINE
2020-11-05 22:54:35.742 [me.event.ThingUpdatedEvent] - Thing âzwave:serial_zstick:ac6c5e88â has been updated.
2020-11-05 22:54:35.754 [me.event.ThingUpdatedEvent] - Thing âzwave:serial_zstick:ac6c5e88â has been updated.
I can only check mosquitto.log where Arduino client reconnecting every ~ 20 seconds:
1604613393: New client connected from 10.0.0.231 as arduino_A1 (c1, k15, uâopenhabianâ).
1604613423: Socket error on client arduino_A1, disconnecting.
1604613423: New connection from 10.0.0.231 on port 1883.
1604613423: New client connected from 10.0.0.231 as arduino_A1 (c1, k15, uâopenhabianâ).
1604613453: Socket error on client arduino_A1, disconnecting.
1604613453: New connection from 10.0.0.231 on port 1883.
1604613453: New client connected from 10.0.0.231 as arduino_A1 (c1, k15, uâopenhabianâ).
1604613483: Socket error on client arduino_A1, disconnecting.
1604613483: New connection from 10.0.0.231 on port 1883.
1604613483: New client connected from 10.0.0.231 as arduino_A1 (c1, k15, uâopenhabianâ).
1604613513: Socket error on client arduino_A1, disconnecting.
I already did under console:
log:set DEBUG org.openhab.binding.zwave
but openhab2.log does not get any updates.
Test environment is simple. Clear 2.5.9 on Debian 10, RPi 3 B+, USB SSD boot, Z-Wave USB Controller ZMEEUZBB, Arduino Mega via USB. Arduino reconnecting every 20 seconds. Disable Z-Wave Controller thing solve problem immediately.
PS: When I edit Z-Wave controller to choose path, Arduino gets disconnected in same way. This is normal I guess and it was presented in previous revisions⌠But from 2.5.1 - 2.5.9 after choosing right /dev/path, all devices still reconnecting every 20 sec.
Thank you for your time guys.