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# The Light Display Manager (LightDM)


## Description

LightDM is a cross-desktop display manager. A display manager is a daemon that:
* Runs display servers (e.g. X) where necessary.
* Runs greeters to allow users to pick which user account and session type to use.
* Allows greeters to perform authentication using PAM.
* Runs session processes once authentication is complete.
* Allows remote login options

Key features are: 

* Cross-desktop - supports different desktops
* Supports different display technologies
* Lightweight - low memory usage and fast performance
* Remote login features
* Comprehensive test suite
* Low code complexity

## Download

LightDM is available in the following distributions:

* [[Arch|https://www.archlinux.org/packages/?name=lightdm]]
* [[Debian|http://packages.qa.debian.org/l/lightdm.html]]
* Elementary OS
* [[Fedora|https://apps.fedoraproject.org/packages/lightdm]]
* [[Mageia|http://mageia.madb.org/package/show/name/lightdm/application]]
* [[OpenSUSE|http://software.opensuse.org/package/lightdm]]
* [[Ubuntu|https://launchpad.net/ubuntu/+source/lightdm]]

Development is hosted on [[Launchpad|https://launchpad.net/lightdm]]. [[Tarball releases|https://launchpad.net/lightdm/+download]] are available. 

## Usage

To produce a new greeter, see the [[API reference|http://people.ubuntu.com/~robert-ancell/lightdm/reference/]].  To test new greeters run `lightdm --test-mode`. 

## Contact

Discussion should be done on the [[LightDM mailing list|http://lists.freedesktop.org/mailman/listinfo/lightdm]]. [[File bugs|https://bugs.launchpad.net/lightdm]] for problems/feature requests.