[CLUE-Tech] exporting linux display to a different system

[Timothy C. Klein]

* Ski Dawg (skidawg at smcorwine.com) wrote:
> I am trying to send the X-Windows display from one linux system to
> another. For sake of the explanation, I will call the system where I
> want to view X on sys1 and the remote system sys2. All typed commands
> are quoted for clarity, but entered in the console sans quotes.
> 
> Here are the steps that I have done:
> 1) On sys1, I type "xhost +"
> 2) From sys1, ssh into sys2
> 3) On sys2, type "export DISPLAY=sys1:0"
> 4) On sys2, try to run "xeyes" to test it.
> 5) I get the error: "Error: Can't open display: sys1:0"
> 
> Both systems are RH9, running XFree86 4.3.0-2. Also, both machines are
> configured with static ip addresses and are listed in each other's
> /etc/hosts file. Exporting to the system name or the ip address doesn't
> make a difference. X11Forwarding is set to "yes" on sys2 in
> /etc/ssh/sshd_config.
> 
> Does anyone have any thoughts about why this is happening and how to fix
> it? I have tried googling for the answer, but haven't come up with
> anything yet.

Does RH9 disable TCP  listening in the X Server?  Debian does
this by default, and until you re-enable it, none of this will work.  I
don't know how Redhat does the configuration, but if the server is
launched with the '-nolisten' tcp option, then you will not get a remote
display no matter how hard you try.

For me, I don't need to do the xhost magic, nor the exporting of the
display.  I simply have ssh export the Xsession for me.  Use the -X
option to ssh.

Tim