Well I have installed 2.0.05.81 and mimic'd you settings exactly, with no luck. Not sure if it helps, but this is the trace when I click init:
?
04:07:47.433 : closeRig()
04:07:47.434 : close serial port
04:07:47.434 : ClosePort(): fd = 14
04:07:47.439 : serial port closed
04:07:47.439 : clear frequency list
04:07:47.440 : initialize title bar
04:07:47.440 : start tranceiver serial port
04:07:47.442 : /dev/serial/by-id/usb-Silicon_Labs_CP2102N_USB_to_UART_Bridge_Controller_0e2a0f816687ed11965525d7a603910e-if00-port0 opened: fd = 14
04:07:47.447 : D: startXcvrSerial:?
Serial port:
? ? Port ? ? : /dev/serial/by-id/usb-Silicon_Labs_CP2102N_USB_to_UART_Bridge_Controller_0e2a0f816687ed11965525d7a603910e-if00-port0
? ? Baud ? ? : 4
? ? Stopbits : 2
? ? Retries ?: 2
? ? Timeout ?: 50
? ? Loop ? ? : 250
? ? RTSCTS ? : 0
? ? CATptt ? : 0
? ? RTSptt ? : 0
? ? DTRptt ? : 0
? ? RTS+ ? ? : 0
? ? DTR+ ? ? : 0
04:07:47.448 : initialize transceiver
04:07:47.449 : selrig->initialize()
04:07:47.449 : init_rig()
04:07:47.449 : selrig->check()
04:07:47.449 : get info S: ? ?R: ?
04:07:47.449 : WriteBuffer: ?00 00 00 00 10
04:07:47.602 : ReadBuffer [51.143000 msec]:?
04:07:47.604 : S: ?00 00 00 00 10 ?R: ?
04:07:47.604 : FAILED
