*OS is Ubuntu 16.04
*Arduino Uno
*Running as root
*This Uno board ran on a Windows system a couple of years ago but has been unused since
When I attempt to select a port from the tools menu, the only choice available is /dev/ttyACMO. Examination of the /dev directory shows there is no /dev/ttyACMO or other drivers as referred to in the Arduino Troubleshooting Section. Inquires at Ubuntu/Linux sites only get "inappropriate question, go away."
Any information on where I can get the correct driver, as well as any insights on making it work, would be greatly appreciated.
Thanks in advance.