How to restart X server

[Edward]

Huan Deng wrote:
> hi,
>    I changed resolution and should restart X server for the changes to take effects.I don't know how to restart X server except rebooting the computer.Some users have connected to the server,and rebooting will cause some trouble. 
>    How to restart X server without rebooting.
>    Thank you very much 
> 

Ctrl-Alt-Backspace will get you out. 'startx' will get you back in.

P.S. I did answer part of this already today. Make sure you read before
you post. It is too busy here to answer everything twice.

Regards,
Ed.