problem displaying with shh: xauth list empty

Code:

ubuntu@server2:~$ xeyes&
[1] 26074
ubuntu@server:~$ Error: Can't open display:

Code:

ubuntu@server2:~$ export DISPLAY=:0.0
ubuntu@server2:~$ echo $DISPLAY
:0.0
ubuntu@server:~$ xeyes&
[1] 26912
ubuntu@server:~$ No protocol specified
Error: Can't open display: :0.0

Code:

ForwardAgent yes
ForwardX11 yes
ForwardX11Trusted yes

Code:

X11Forwarding yes
X11DisplayOffset 10
X11UseLocalHost no
UseLogin no

Code:

cd /home/machine
mv .Xauthority .Xauthority.old
touch .Xauthority
Chown ubuntu:ubuntu .Xauthority
*restar*
ubuntu@server:~$ xauth listubuntu@server:~$

Code:

ubuntu@server:~$ sudo startx


_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already ruing
(EE)
Fatal server error:
(EE) Caot establish any listening sockets - Make sure an X server isn't already ruing(EE)
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE)
(EE) Server terminated with error (1). Closing log file.
Invalid MIT-MAGIC-COOKIE-1 keyxinit: giving up
xinit: unable to coect to X server: Interrupted system call
xinit: server error