using laptop as second monitor?

[Mark Morschhäuser]

> Display managers often start the local Xserver with -nolisten tcp. So
> the Xserver won't accept TCP connections. You said you were running KDE
> on both machines? If I understand the idea correctly you should run a
> naked X server on both machines instead (that listens to TCP) and run
> KDE on Xdmx.

yeees! "-nolisten tcp" was activated in startx. Together with the xhost 
command I was able to make the first step:

A new display :1 is created, with the grey background of X and I can move the 
mouse cursor between both machines

Now I'll see how to connect KDE to the new display, or better: how to use xdmx 
per default.


Thanks @all

Mark