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

[Tobias Kraus <tobias.kraus@stud.tu-muenchen.de>]

> 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

alternatively you can do this in the root home directory (/root):

ln -s ~userThatRunsX/.Xauthority .

This will work as long as you don't log in in X as root. Then, the .Xauthority 
file will be overwritten.

Tobias

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