Non-root users cannot run Xwindow

[Aaron White]

We were able to get xclock to display one the local machine using VNC
Viewer, after following your suggestions. Thanks!

Is it possible to get an xwindow to display directly to a windows XP
laptop connected remotely?  If so, does the XP machine need additional
software to display it?

I've tried setting the display variable to that of my laptop; running
xclock seems to pause my remote session until I ctrl-c out of it, but it
does not display anything.


-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Rhugga Harper
Sent: Friday, 11 November 2005 9:11 AM
To: General Red Hat Linux discussion list
Subject: Re: Non-root users cannot run Xwindow

That means that user doesn't have permission to use the local xserver.
Typically the user that logs into the console 'owns' the display.

The easy fix is this:

As the user logged into the console:
xhost +

Then as the using you want to run the X app:
export DISPLAY=localhost:0.0 (probably not needed but depends on
envrionment)
xterm &

That should do it for you.

If you are using to access this box, check if the sshd server has
X11Forwarding enabled (I believe it is by default for most distro's)

Then login an enable X tunnelling:

ssh -x <server>

Note: You can permanently enabled this in the ssh_config file on your
client
system, or by creating a $HOME/.ssh/config file.

-CC


On 11/10/05, Aaron White <awhite at ioppolo.com.au> wrote:
>
> Hi,
>
> I have a user trying to run windowed apps from command line, without
> success. It seems to work okay with root access, but our current
> situation does not allow for this.
>
> For example, trying to open xclock as non-root user gives the error:
> Xlib: connection to ":0.0" refused by server
> Xlib: No protocol specified.
>
> Error: Can't open display: :0.0
>
> We are connected using VNC Viewer (or remote shell) and do not have
> access to the local site.
>
> Another windowed program gives a java error:
> ~/jre/1.4.2/lib/i386/libawt.so: /usr/X11R6/lib/libXp.so.6:
> undefined symbol: _Xsetlocale
>
> I'm not sure if the two are related, but our installation docs
suggested
> using xclock to help troubleshoot
> this problem. Alas, the docs did not mention what to do if xclock did
> *not* start.
>
> Regards,
>
> Aaron White
> Ioppolo & Associates
>
>
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