Comment 0 for bug 1421325

xdmcp server ubuntu 14.04 LTS
Client side displays server log in screen correctly, however when a user name is selected or manually entered the server will not accept any password, displays authentication error and returns to main log in screen

I believe it is a configuration file issue on the server side, not sure which configuration file though.
I have tried remmina and xepher from a client Ubuntu 14.04 LTS with same results.

 apt-cache policy xdm
xdm:
  Installed: (none)
  Candidate: 1:1.1.11-1ubuntu1
  Version table:
     1:1.1.11-1ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages