I just got my Arduino UNO delivered and I wanted to see if it's working properly or not.
I tried following this page to create a simple program and the program compiled successfully.
But when I tried to select the serial port on IDE, the port option was grayed out. I searched for the problem and I landed on this page. It says
Linux includes the drivers necessary to use Arduino, and no additional install is needed. However, permissions might need to be configured. For current instructions on how to set up these permissions, visit this page.
An alternative method is to run Arduino as root in the terminal.
But I still see the port option grayed out even as a root user. Any idea?