XDMCP is not listening on FC5

[kurifu]

I just recently upgraded to FC5, using a bunch of old config file from FC4 I managed to preserve my system set up. One thing though I can not get working again is XDMCP.

The problem seems to be that X-Windows is not listening... netstat -l reveales that there is nothing bound to that port, though xfs is bound fine on all interfaces.

Further research (ps -ef | grep gdm) shows this as one of its results:


root 2164 2103 0 17:31 tty7 00:00:00 /usr/bin/Xorg :0 -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7


Somwhere it seems that XOrg is still being told not to bind, I can not figure out where on my system to change this. I have already updated my /etc/gdm/gdm.conf so that [xdmcp] has Enabled=true;

Can anyone possibly tell me what I am missing? I have no access to a graphical terminal so please don't tell me to run gdmsetup :S

I think you also need to change:

#DisallowTCP=true

to

DisallowTCP=false

[Firewing1]

See my Server Setup howto, if you just ignore the VNC part it *should* work. I'm currently using XDMCP over VNC and it's working great. A little note that check you're kernel version and update to the newest: I believe it was version 2.6.16-1.2007_FC5 that broke my VNC (I could connect but just got a blank screen) and then the update to ...2111_FC5 fixed it.
Please note additionaly that you'll need to have port 177:UDP open for it to work properly.
Firewing1

[kurifu]

DisallowTCP is to allow incoming connections from applications... that would be something to have enabled on my client machine, but not on my linux server.

Firewing, as nice as your guide is I can not use it because configuring GDM in your system means using gdmsetup, I do not have access to a graphical terminal until I get XDMCP working, so I am sure you can see why this option is ruled out. I have to figure out where the config file is stored in FC5 and work it from there.

I deleted the /etc/X11/gdm and noticed the GDM still loads without any problems, does this mean that the file is located elsewhere? I couldn't find anything else by the name of gdm.conf so I am not sure, maybe gdm just works without a config file.

[kurifu]

Well in FC5 I just happened to notice that everything appears to be in /etc/gdm instead of /etc/X11/gdm, and there was no link to the first directory from the second. I have a feeling this is going to finally fix my problem.

[Firewing1]

Well, I have it working and here's my /etc/gdm/custom.conf:

# GDM Configuration Customization file.
#
# This file is the appropriate place for specifying your customizations to the
# GDM configuration.   If you run gdmsetup, it will automatically edit this
# file for you and will cause the daemon and any running GDM GUI programs to
# automatically update with the new configuration.  Not all configuration
# options are supported by gdmsetup, so to modify some values it may be
# necessary to modify this file directly by hand.
#
# To hand-edit this file, simply add or modify the key=value combination in
# the appropriate section in the template below.  Refer to the comments in the
# gdm.conf file for information about each option.  Also refer to the reference
# documentation.
#
# If you hand edit a GDM configuration file, you should run the following
# command to get the GDM daemon to notice the change.  Any running GDM GUI
# programs will also be notified to update with the new configuration.
#
# gdmflexiserver --command="UPDATE_CONFIG <configuration key>"
#
# For example, the "Enable" key in the "[debug]" section would be specified by
# "debug/Enable".
#
# You can also run gdm-restart or gdm-safe-restart to cause GDM to restart and
# re-read the new configuration settings.  You can also restart GDM by sending
# a HUP or USR1 signal to the daemon.  HUP behaves like gdm-restart and causes
# any user session started by GDM to exit immediately while USR1 behaves like
# gdm-safe-restart and will wait until all users log out before restarting GDM.
#
# For full reference documentation see the gnome help browser under
# GNOME|System category.  You can also find the docs in HTML form on
# http://www.gnome.org/projects/gdm/
#
# NOTE: Lines that begin with "#" are considered comments.
#
# Have fun!

[daemon]
RemoteGreeter=/usr/libexec/gdmgreeter

[security]
DisallowTCP=false

[xdmcp]
Enable=true
DisplaysPerHost=4

[gui]
AllowGtkThemeChange=false

[greeter]

[chooser]

[debug]
Enable=true

[servers]

Firewing1

[kurifu]

Thank guys, I got it all figured out... problem was that config file location changed between FC4 and FC5 as I recall which cause the file I was editing to not be the right one, lol.