From: rich@example.invalid   
      
   Harold Johanssen  wrote:   
   >        I have a Slackware 15.0 host A running a TigerVNC session on   
   > display 1. I can connect to that session from another Slackware 15.0   
   > system with vncviewer tunneled within an sshSSH channel. I can also ssh   
   > into B from a terminal emulator in A.   
   >   
   >        What I would like to do is the following:   
   >   
   >        1. In the TigerVNC session in A launch a terminal emulator and   
   > ssh from it into B.   
      
   You are telling this ssh here to perform X forwarding, right?  Or are   
   these systems on the same network such that B can contact A without   
   being carried over the ssh tunnel?   
      
   >        2. At the ssh session in B created above send some graphical   
   > output to the TigerVNC session in A.   
   >   
   >        Step two does not work - I keep getting 'Can't open display: A:   
   > 1.0'.   
   >   
   >        I thought that the way to do pull this off consisted of executing   
   > the following commands in a terminal emulator in the TigerVNC session in   
   > A:   
   >   
   >        $ export DISPLAY=A:1.0   
   >        $ xhost +B   
      
   The xhost +B has to happen on A.  You need to tell A "allow B to use   
   your display", which is what "xhost +B" does, when run on A.  This   
   above looks like you are doing the xhost on B.   
      
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