title: Arduino Tools > Serial Port greyed out
body: <p>I am running Debian 7 (Linux Crunchbang) and wanted to use The Arduino IDE to program my Arduino UNO. To do that I installed the package <code>arduino</code>. When I started the Arduino I was asked to add my user to the <code>dialout</code> group. So I did with <code>sudo usermod -a -G dialout &lt;my-username&gt;</code>. </p>
  
  <p>However when I start the Arduino IDE using <code>arduino</code> in the commandline the IDE opens but I am not able to load my program to the Arduino. The  error message is "Serial port COM1 not found. Did you select the right one from the Tools > Serial Port menu?" And when I went to select the Serial Port, the option "Tools > Serial Port" is greyed out. </p>
  
  <p>I thought it is because I did not grant read and write permissions on my usb port (ttyACM0). So I did <code>sudo chmod a+rw /dev/ttyACM0</code> but the option is still greyed out.</p>