[K12OSN] Cant VNC to server after installing Fl_TeacherTool

[Wilson Chan]

> Did you install fl_tt manually (tarball/compile) or with yum?
> Which vncviewer are you using to connect? tightvnc or realvnc?
> 
Installed via Yum and used the instructions below. As for the viewer im using RealVNC. 

      1) Edit the file /opt/ltsp/i386/etc/lts.conf and uncomment
         (remove the "#") from the following line:

                 X4_MODULE_02 = vnc

      2) Now you'll have to make a password for the vnc-session. Run this
         command as root:

                /usr/bin/vncpasswd

      3) Copy the password file into the ltsp-tree

               cp -R -p /root/.vnc /opt/ltsp/i386/root/


When I SSH to the server I run "service vncserver start" I get the errors below but the status shows Xvnc as stopped. 

[root at server howto]# service vncserver start
Starting VNC server: no displays configured                [  OK  ]

[root at server howto]# service vncserver status
Xvnc is stopped

If I run "vncserver" from the CLI then "service vncserver status" then its running but I only get the black screen with a cursor. 

[root at server howto]# vncserver

New 'server.ltsp:6 (root)' desktop is server.ltsp:6
Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/server.ltsp:6.log

[root at server howto]# service vncserver status
Xvnc (pid 8531) is running...
[root at server howto]# ps aux |grep vnc
root      8531  1.5  0.4  27780  9932 pts/1    S    16:19   0:00 Xvnc :6 -desktop server.ltsp:6 (root) -httpd /usr/share/vnc/classes -auth /root/.Xauthority -geometry 1024x768 -depth 16 -rfbwait 30000 -rfbauth /root/.vnc/passwd -rfbport 5906 -pn
root      8578  0.0  0.0  57052   700 pts/1    S+   16:19   0:00 grep vnc
[root at server howto]#