How to set up xdmcp on Ubuntu 10.04 LTS

1. gdm.schema 수정 

$ sudo vi /etc/gdm/gdm.schema

.

.

 <schema>

       <key> security / DisallowTCP </ key>

       <signature> b </signature>

       <default> true </default> -> false 로변경

 </ schema>

.

.

 <schema>

       <key> xdmcp / Enable </ key>

       <signature> b </ signature>

       <default> false </default> -> true 로 변경

  </ schema>

2. custom.conf 수정(생성)

$ sudo vi /etc/gdm/custom.conf

[daemon]

RemoteGreeter = /usr/lib/gdm/gdm-simple-greeter

[security]

DisallowTCP = false

AllowRemoteRo​​ot = false

[xdmcp]

Enable = true

DisplaysPerHost = 2

[gui]

[greeter]

[chooser]

[debug]

[servers]

3. restart gdm

$ sudo /etc/init.d/gdm restart

  or reboot :)

출처 : http://d.hatena.ne.jp/zqwell-ss/20100812/1281594005