Hello, Finally the problem is not here : https://github.com/domoticz/domoticz/tree/development/hardware/serial but is here : https://github.com/contactless/domoticz/blob/master/main/Helper.cpp in function "GetSerialPorts" and I think LXC is not detected as normal system, may be is posible to created ...

Hello, Exact same error here ! Empty list in serial port dropdownlist for all new hardware created : - LXC container with Proxmox - Domoticz ultimate beta version (v 4.10303) - I see in command line /dev/ttyUSB0 and seem to have the good users/right - Domoticz start as root user I try verbose mode ...