Can't connect to X11 window server in EAP

Issue

• JBoss EAP fails to start throwing the exception in the log:

java.lang.InternalError: Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable.
  at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
  at sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52)
  at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155)
  at java.security.AccessController.doPrivileged(Native Method)
  at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
  at java.lang.Class.forName0(Native Method)
  at java.lang.Class.forName(Class.java:169)
  at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
  ...
  at java.lang.Thread.run(Thread.java:662)

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment
  at java.lang.Class.forName0(Native Method)
  at java.lang.Class.forName(Class.java:169)
  at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
  at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1135)
  ...
  at java.lang.Thread.run(Thread.java:662)

• Error in the log :

    Servlet.service() for servlet default threw exception
    java.lang.InternalError: Can't connect to X11 window server using ':1' as the value of the DISPLAY variable.
            at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
            at sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52)
            at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155)
            at java.security.AccessController.doPrivileged(Native Method)
            at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
            at java.lang.Class.forName0(Native Method)
            at java.lang.Class.forName(Class.java:169)
            at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
            at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1135)
            ...