If you are trying to run Robot Overlord or Arduino from Linux and the list of connected devices is empty you may need to add permissions. The link above describes the process. To quote,
Note for Linux users: Serial port access is limited to certain users and groups in Linux. To enable user access, you must open a terminal and enter the following commands before SerialComm will be able to access the ports on your system. (Note, this must only be done once for each user):
sudo usermod -a -G uucp username
sudo usermod -a -G dialout username
Replace the username parameter with your current username. (If you are not sure what your username is, type ‘whoami’ and it will tell you.) If you are using SUSE 11.3 or higher, replace the ‘-a -G’ flags with a single ‘-A’ flag. Log out and you should have access to the serial port after logging back in.
Basically just add yourself to the dialout and uucp group. This while permissions and control is one of the beauties of linux. 🙂
