x2x configuration

[rat007]

Has anyone tried installing x2x on Fedora 3? I've tried it but don't know how to configure it, the man pages doesn't help me very much. How do I select a display? How do I configure the server side?

[drakebasher]

Maybe this will help:http://www.ubuntulinux.org/wiki/X2xHowto

[rat007]

Thanks, but I didn't get much futher. When running x2x I'm getting the following error message

$ x2x -to 192.168.0.2:0.0 -east
Xlib: connection to "192.168.0.2:0.0" refused by server
Xlib: No protocol specified

x2x - error: can not open display 192.168.0.2:0.0

I've added on the other computer xhost +192.168.0.1 but it seems that it;s looking for a deamon or service which is not running ..

[potato]

I'm not sure if anyone reads this thread any more, but I found it via google and have some suggestions as to how to get this working..

First off, since at least Fedora 6 (and possibly earlier, judging by OP asking about FC3), the X server has disabled listening on TCP/IP sockets by default.

It's easy to fix however..

If you use the standard GDM greeter (the default on install), you need edit:

/etc/gdm/gdm.conf

and change DisAllowTCP to False.

If you use KDE as your greeter (i.e.: /etc/sysconfig/desktop has DISPLAYMANAGER="KDE" set inside), you edit:

/etc/kde/kdm/kdmrc

Find the line that says ServerArgs and delete the string '-nolisten TCP'

At this point, either rebooting, restarting the X server (ctrl-alt-backspace if DontZap isn't enabled in xorg.conf, or do it from the greeter), or switching from init 5 to init 3 and then back to 5 should do the trick.

You can verify that it's working by typing the following as root:

lsof -i TCP

And you should see a couple of lines that look like this:

X       3548   root    1u  IPv6  16717       TCP *:x11 (LISTEN)
X       3548   root    3u  IPv4  16718       TCP *:x11 (LISTEN)

Now x2x should work over ssh!

Here are some URL's I found helpful...

Musings of a Graduate Student - Pradeep's blog: x2x - a cool X hack
Keunwoo Lee : About x2x: Sharing input devices between X11 servers in software
Share mouse and keyboard using x2x and ssh

For reference:

Essentially, I just SSH into the box I want to control, and type:

x2x -east -to 0:

That's it! Everything's secured over SSH, and no mucking around with xhost.

enjoy!

--edit:

I use my .ssh/config file for everything. My host entry looks something like this:

host potato
   hostname potato.localdomain
   ForwardX11  yes
   ForwardX11Trusted yes

Note also that /etc/ssh/sshd_config needs to have AllowTCPForwarding set to 'yes' and X11Forwarding set to 'yes' for any of this to work. By default, AllowTCPForwarding is enabled, but X11Forwarding is NOT.