I thought I'd seen this kinda annoying goofyness before.  Looky:

[steve@zippy steve]$ ssh -X -C an.irrelevent.host
steve@an.irrelevent.host's password:
Last login: Thu May 24 15:36:13 2001 from some.other.place
bash$ xcalc
bash$ su
Password:
[root@asdf steve]# xcalc
[root@asdf steve]# exit
bash$ su -
Password:
[root@asdf /root]# xcalc
X connection to an.irrelevent.host:10.0 broken (explicit kill or server
shutdown).
[root@mail /root]#

Summarizing: as a normal user X is AOK.  If I become root with 'su' it
also works.  If, however, I use 'su -' it doesn't.  

-- On the phone with Kevin and he seems to have the answer:  you have to
be the same user on both ends of the connection for it to work.  Give
that a try.

Steve

proudhawk@uswestmail.net wrote:
> 
> well, I added accoring to directions. the probem still persists..
> 
> I still get Gdk-ERROR***: X connection to <hostname>:10.0 broken
> (explicit kill or server shutdown).
> 
> this is starting to get frustrating. how the hell am I supposed to
> remotely administer systems using X apps when I can't even get X
> to access the connections?
> 
> q: could a firewall script be responsible for the problem here as well?
> 
> I do appreciate the help. sometimes X just isn't worth working in.
> 
> Technomage Hawke
> 
> On Sat, 26 May 2001, "foodog" wrote:
> 
> >
> > Did you give the remote host permission with xhost?  As in:
> >
> >   xhost +the.host.name
> >
> > You want to be sure not to leave a space between the '+' and host name;
> > just "xhost +" means everyone's welcome, probably not a good idea.
> >
> > Steve
> > proudhawk@uswestmail.net wrote:
> > >
> > > ok,
> > > I've run into this enough and found virtually nothing in either the howto's or online documentation.
> > >
> > > it appears to be a permissions problem with teh X server.
> > >
> > > even though I have X forwarding through ssh tunnle turned on, the X server locally will not accept remote connections from anywhere through ssh (unless they originate from a "root" account).
> > >
> > > This problem did not exist with the version of X under 3.3.5 but cropped up with version 4.x.
> > >
> > > any suggestions would be greatly appreciated.
> > >
> > > one of the errors I get is:
> > > GTK Error: Connection to <hostname>:10.0 broken (explicit kill or server shutdown).
> > >
> > > I would like to be able to use X apps without having to resort to Xvnc on the remote system
> > > (why tie up more cpu cycles and bandwidth?).
> > >
> > > HEEEEELP!
> > >
> > > Techomage Hawke