Now I am able to see the display:1 of the box. When I try to run
vncserver :0 I get an error saying that my display is already locked. So I
installed x11vnc which will help me see the display:0, this time I did not
get a complaint. Locally on the machine I am able to see the screen using
vncviewer localhost:0, however when I try to access it remotely I get the
same problem like vino server (Black screen).