XDMCP, which stands for "X Display Manager Control Protocol"
1. 首先配置Ubuntu使之允许远程访问
点击 System -> Preference -> Remote Desktop,允许远程连接即可。
2.修改gdm配置文件
sudo cp /usr/share/doc/gdm/examples/custom.conf /etc/gdm/
fengyun@fengyun-server:~$ vi /etc/gdm/custom.conf
# GDM configuration storage
[daemon]
[security]
[xdmcp]
Enable=true
DisplaysPerHost=2
[greeter]
[chooser]
[debug]
3、重启gdm
sudo /etc/init.d/gdm restart
参考链接: