Ubuntu server xmanager ubuntu is a typical multi-user multi-task operating system. XDMCP allows remote users to log on to ubuntu tasks at the same time. solution for www.2cto.com [version 10.04]: 1. sudo gedit/etc/TPD/gestational disease. schemas finds the Xml Code <schema> <key> xdmcp/Enable </key> <signature> B </signature> <default> false </default> </schema> <schema> <key> security/DisallowTCP </key> <signature> B </signature> <default> false </default> </schema>: www.2cto.com <schema> <key> xdmcp/ Enable </key> <signature> B </signature> <default> true </default> </schema> <key> security/DisallowTCP </key> <signature> B </signature> <default> true </default> </schema> after www.2cto.com is saved, restart ubuntu. Then, use Xmanager in windows to connect to the ubuntu server. [Version 12.04]: it is relatively easy to enable xdmcp server in Ubuntu 12.04. You only need to run the sudo vi/etc/lightdm command. conf, and in lightdm. add the following content to the end of the conf file: [XDMCPServer] enabled = true. After the modification is completed, restart the system and use xmanager to remotely log on. However, with this modification, the root user cannot be remotely logged on. You must perform the following operations: set a password for the root user to activate the root user. Run sudo passwd root in the terminal to enter the current user password, and then enter the password you want to set for the root user. Run sudo vi/etc/lightdm. conf: Add greeter-show-manual-login = true at the end of the file. restart the system now. On the logon page, you can enter the user name and password by adding the "Logon" option, in this step, you know how to do it.