How to use XDMCP+GDM and Xnest?
11,037
Solution 1
Wait for this bug to be fixed: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/669670
Solution 2
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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Author by
João Pinto
Updated on September 17, 2022Comments
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João Pinto over 1 year
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 ?
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João Pinto over 13 yearsOh another regression :(