I want to be able to connect to one of my Linux systems (Debian 7, 64 bit, KDE4 etc) from another Linux system using Xnest:

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Xnest :1 -query serveraddress

I have removed "-nolisten tcp" from kdmrc:

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ServerArgsLocal=-br -nolisten tcp

and from xserverrc:

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exec /usr/bin/X -nolisten tcp "$@"

and I have enabled xdmcp in kdmrc:

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[Xdmcp]
Enable=false
Port=177
Willing=/etc/kde4/kdm/Xwilling


However, when I try to connect:

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# Xnest :1 -query 192.168.0.7
[dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
[dix] Could not init font path element /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, removing from list!

Fatal server error:
XDMCP fatal error: Manager unwilling Host unwilling


This used to be quite simple - have I just forgotten something, or has it been disabled by somebody who knows better what is good for me?

Please check the relevant /etc/X11 configuration files - various distributions usually restrict XDMCP on a per-host basis even if TCP connections have been enabled for security reasons.

Hi bcooksley,

Sorry if I sounded rather negative in my original post - it is sometimes frustrating when things don't work, and you think you have covered everything. In the end it turned out to be Xaccess, I believe. Thanks for helping.

Not a problem - thanks for posting the solution.