6

I have been trying to enable XDMCP on GDM without much success. Following some instructions I have edited /etc/gdm/custom.conf and added:

[daemon]
RemoteGreeter=/usr/lib/gdm/gdm-xdmcp-chooser-slave
[xdmcp]
Enable=true

Then restarted gdm and tried to connect both locally and from a remote system with:

Xnest :1 -query localhost
Xnest :1 -query remote_system_hostname

I just get a black screen instead of the GDM window as expected. I am missing something ?

2 Answers 2

3

Wait for this bug to be fixed: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/669670

1
  • Oh another regression :( Nov 4, 2010 at 8:30
1

For LightDM which is in the latest Unity based Ubuntus I used this answer: XDMCP setup for lightdm, ports not listening

And you will probably need to also add the SeatDefaults setting in the answer i.e.

[SeatDefaults]
xserver-allow-tcp=true

And you may also need to enable access to your local server by using

xhost +<remote hostname> 

or just

xhost + 

to disable it completely

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