[TriLUG] SSH display variable being set incorrectly

[Joseph Tate]

I find it useful to use the -v option to ssh to debug connectivity problems.


On Mon, 29 Nov 2004 12:24:49 -0500, Owen Berry
<trilugbucket at berrybunch.net> wrote:
> On Mon, Nov 29, 2004 at 12:07:51PM -0500, Tanner Lovelace wrote:
> 
> 
> > On Mon, 29 Nov 2004 11:29:44 -0500, Owen Berry
> > <trilugbucket at berrybunch.net> wrote:
> > > I have this problem recently where when I connect to my home machine
> > > via SSH the DISPLAY variable gets set according to the host I came
> > > from (example dargo.trilug.org:0.0) instead of using the SSH tunnel
> > > (example localhost:10.0). If I set the DISPLAY manually everything
> > > works fine, so it's not that X forwarding is not working.
> > >
> > > Any suggestions on why this would be happening?
> >
> > 1. It's turned off in the X-server
> 
> No, it's turned on and works correctly if the DISPLAY variable is set
> correctly.
> 
> $ grep X11Forwarding /etc/ssh/sshd_config
> X11Forwarding yes
> 
> > 2. It's turned off as a default option for the ssh client
> 
> Host *
>     ForwardX11 yes
> 
> > 3. You didn't specify -X on the ssh command-line?
> 
> I tried that, even though it's the default on the client side.
> >
> > Try running ssh with the -X and -vvv options to see what's happening.
> 
> Couldn't figure anything out from that. Relevant lines:
> 
> debug2: x11_get_proto: /usr/X11R6/bin/xauth list :0.0 2>/dev/null
> debug1: Requesting X11 forwarding with authentication spoofing.
> debug1: channel 0: request x11-req
> 
> So it seems to be trying to do the right thing.
> 
> Thanks for the suggestions, but no luck so far. Note that it used to
> work correctly. I don't usually use it so I'm not sure exactly when it
> stopped working, otherwise I would penalize the relevant update.
> 
> Thanks,
> Owen
> 
> 
> 
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-- 
Joseph Tate
Personal e-mail: jtate AT dragonstrider DOT com
Web: http://www.dragonstrider.com