[Novalug] ssh X forwarding stopped working

[Jon LaBadie]

On Tue, Oct 20, 2009 at 03:37:44PM -0700, Bryan J. Smith wrote:
> What's the output when you pass "-vvv" option with the SSH client?
> Does it tell you why the X tunnel is not setup?

I tried all three levels of -v.  Did not see anything obvious.
The -vvv output is quite long, here is the end piece where all
"X" entries are found.


debug1: Requesting no-more-sessions at openssh.com
debug1: Entering interactive session.
debug2: callback start
debug2: x11_get_proto: /usr/bin/xauth  list unix:10.0 2>/dev/null
debug1: Requesting X11 forwarding with authentication spoofing.
debug2: channel 0: request x11-req confirm 0
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug3: tty_make_modes: ospeed 38400
debug3: tty_make_modes: ispeed 38400
debug1: Sending environment.
debug3: Ignored env QTINC
debug3: Ignored env TxtGrn
debug3: Ignored env JONPATH
debug3: Ignored env TxtBlk
debug3: Ignored env METAMAIL_PAGER
  < lots of other env variables 'Ignored' >
debug3: Ignored env PAGER
debug3: Ignored env ENV
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug3: Ignored env MUTT
debug3: Ignored env TxtBld
debug3: Ignored env SDL_AUDIODRIVER
debug3: Ignored env HOME
debug3: Ignored env JONMANPATH
debug3: Ignored env MAIL
debug3: Ignored env SSH_TTY
debug3: Ignored env KDEDIRS
debug2: channel 0: request shell confirm 1
debug2: fd 3 setting TCP_NODELAY
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel_input_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug2: channel_input_confirm: type 99 id 0
debug2: shell request accepted on channel 0
Last login: Tue Oct 20 20:00:50 2009 from mums.jgcomp.com


One thing I just noticed is the entry on the 4th line
above calling /usr/bin/xauth.  On Solaris 9 xauth is
located in /usr/openwin/bin.  But I put a symlink in
/usr/bin and there was no change in behavior.

Jon

>  
> ----- Original Message ----
> 
> From: Jon LaBadie <novalugml at jgcomp.com>
> 
> I'm working at a Fedora 9 desktop ("mums") and ssh'ing
> into a Solaris 9 x86 box ("butch").  I have been doing
> this for years and if I run a graphical command on butch,
> X forwarding has been displaying properly on the mum's
> screen.  Both machines are on the same LAN.
> 
> It has stopped working for unknown reasons.
> 
> When I login to butch the DISPLAY variable is not set.
> Graphical programs report "Can't open display".
> If I manually set and export DISPLAY to mums:10.0,
> mums:0.0, or use the equivalent FQDN or IP addresses,
> the graphical programs "seem to be working" (i.e.
> no errors and "jobs" reports they are "running"),
> but there is no display on mums.
> 
> I've checked the xhost settings on mums, added all
> clients I can think of and even disabled access control
> to no avail.
> 
> Any ideas?
> 
> Jon
> -- 
> Jon H. LaBadie                  jon at jgcomp.com
> JG Computing
> 12027 Creekbend Drive        (703) 787-0884
> Reston, VA  20194        (703) 787-0922 (fax)
> _______________________________________________
> Novalug mailing list
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> 
>>> End of included message <<<

-- 
Jon H. LaBadie                  jon at jgcomp.com
 JG Computing
 12027 Creekbend Drive		(703) 787-0884
 Reston, VA  20194		(703) 787-0922 (fax)