View Full Version : [ubuntu] X11 forwarding via SSH causes terminal to hang

October 14th, 2009, 10:05 PM
Hi all,
Sorry if this is the wrong forum, I couldnn't find anything that seemed more appropriate. I'm having a bit of a problem with SSH forwarding. I'm connecting to a CentOS server, and then running the Xnest command with the following script.


if [ "$#" -ne 1 ]
echo "You must specify a display number. Try any number > 0"
exit -1

/usr/bin/Xnest ":$1" -ac -geometry 1024x768 -once -query localhost &> /dev/null &

So, I start the script on my server with the command "XnestStart 1". This works well when I'm connecting from OS X clients, as well Fedora desktops. However, whenever I connect with Ubuntu, my X session starts, then after 1 to 2 minutes my remote X11 screen turns black and my SSH session hangs. Any idea's what's going wrong? I've verfied it's not the server by connecting with other clients, and I'm not getting the same problem. I'm connecting with ssh with these options.

ssh -X -C todd@foo.bar.com