Also, check to make sure your localhost is set in /etc/hosts. I had a
similar problem and found that the hosts file was missing the localhost
entry thanks to Craig's help.


On Thu, 2006-08-24 at 04:53 -0700, der.hans wrote:
> Am 23. Aug, 2006 schwätzte Mark Phillips so:
> 
> > I cannot figure out what is wrong. Everything I have read on the net and in
> > O'Rreilly's SSH book say I am doing it right, but it doesn't work!
> >
> > Machine - monkey
> > Debian stable
> > /etc/ssh/ssh_config has
> >   ForwardX11 yes
> >   ForwardX11Trusted no
> 
> debian defaults to ForwardX11Trusted set to yes.
> 
> > Machine - stingray
> > Debian stable
> > kde desktop is running
> > /etc/ssh/ssh_config has
> >   ForwardX11 yes
> >   ForwardX11Trusted no
> >
> > I can ssh from monkey to stingray (and vice versa)
> >
> > When I try ssh -X stingray from monkey, I get Error: Can't open display.
> >
> > In debug mode, I see the following:
> > debug1: Authentication succeeded (keyboard-interactive).
> > debug1: channel 0: new [client-session]
> > debug1: Entering interactive session.
> > debug1: Requesting X11 forwarding with authentication spoofing.
> > Linux stingray 2.6.8-2-386 #1 Tue Aug 16 12:46:35 UTC 2005 i686 GNU/Linux
> >
> > mark@stingray:~$ echo $DISPLAY
> 
> stingray is the remote host in this situation, correct?
> 
> What do you have for DISPLAY on the localhost?
> 
> Let us see the following scenerio:
> 
> local:$ echo $DISPLAY
> :0.0
> local:$ ssh -X remote
> you@remote's password:
> .
> .
> remote:$ echo $DISPLAY
> localhost:10.0
> 
> > mark@stingray:~$ xeyes
> > Error: Can't open display:
> 
> Yup, not having DISPLAY set will do that to you :).
> 
> ciao,
> 
> der.hans
> 
> > mark@stingray:~$ exit
> > debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
> > logout
> > debug1: channel 0: free: client-session, nchannels 1
> > Connection to stingray closed.
> > debug1: Transferred: stdin 0, stdout 0, stderr 32 bytes in 87.1 seconds
> > debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.4
> > debug1: Exit status 1
> >
> > FWIW, I can do "X -query stingray" from monkey and get the gdm login
> > and my kde desktop from stingray to monkey.
> >
> > What am I doing wrong?
> >
> > Thanks!
> >
> 
> -- 
> #  https://www.LuftHans.com/        http://www.CiscoLearning.org/
> #  Join the League of Professional System Administrators! https://LOPSA.org/
> #  Take a razor to your throat
> #  and a noose to your neck,
> #  then follow that up with a cup of poison.
> #  Not a good way to start the day. - der.hans
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