<p>March 27, 2013</p>

<p>if you get exception similar to the following: Can’t connect to X11 window server</p>

<p>check your DISPLAY env variable : &gt; echo $DISPLAY<br />
fix it if not correct : &gt; export DISPLAY=:0</p>

<p>if it’s correctly set but you have the problem. May your linux user you have using don’t have rights to the xhost.<br />
check this closure by typing: &gt; xhost</p>

<p>if your user is not in the list, give it the right to connect to the X11 window server by typing: &gt; xhost +SI:localuser:jboss</p>