Re: Xlib: connection to ":0.0" refused by server ???

[Erik Steffl <steffl@bigfoot.com>]

daves debian wrote:
> When i am logged in as a user, I want to execute an X program as 
> root, I type 
> su
> <password>
...

> The X library has been refused by the X server, because root is not 
> autherised to connect to the server ??
...

  only authorized user can connect to X server, just because you are 
root doesn't mean you can connect to X server on given machine (just 
like you cannot connect to other services - e.g. you'd still need 
password for database, ...)

  you have few options:

  1) xhost (see man xhost), don't do that though!

  2) as root run: xauth merge ~userThatRunsX/.Xauthority

  option 2 will give you access to X server without compromising 
security (while it's running, if you restart X you have to run xauth again)

	erik