root@a1200:~$ /etc/init.d/udev restart ; udevtrigger 
Stopping the hotplug events dispatcher udevd
root@a1200:~$ /etc/init.d/xserver-nodm restart
Stopping XServer
root@a1200:~$ Starting Xserver

_XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
_XSERVTransOpen: transport open failed for inet6/a1200:0
_XSERVTransMakeAllCOTSServerListeners: failed to open listener for inet6
error: Invalid argument

Fatal server error:
no screens found
giving up.
xinit:  Connection refused (errno 111):  unable to connect to X server
xinit:  No such process (errno 3):  Server error.