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Translation(s): English - Français - Italiano - Svenska
LightDM is a cross-desktop Display Manager. It was built as a relatively light-weight and highly customizable alternative to GDM. It's developed at Canonical by Robert Ancell and all contributors are required to asign the their copyright to Canonical through a Contributor License Agreement that allows proprietarization.
- No Gnome dependencies
- Uses webkit to render themes
- Supports Gtk and Qt
Highly customizable (basic gtk theme, unity theme in Ubuntu Precise)
LightDM was introduced in Wheezy, it's stable enough for use also in Jessie and Sid.
To install lightdm in Wheezy, run as root
aptitude install lightdm
Configuration
LightDM configuration file is found at /etc/lightdm/lightdm.conf. Making a backup of the original configuration file is recommended.
To change the current default Display Manager, run
dpkg-reconfigure lightdm
If you're new to LightDM, it's recommended to have GDM, slim or another Display Manager installed as a backup.
Enable autologin
Look up these lines in lightdm configuration file, uncomment them and customize to your preference.
[SeatDefaults] #autologin-user= #autologin-user-timeout=0
Change the greeter's background
Debian's LightDM GTK greeter is configured in /etc/lightdm/lightdm-gtk-greeter.conf. There, we find that the background image points to /usr/share/images/desktop-base/desktop-background, which is a symlink managed by update-alternatives.
So, to change the greeter's background, the best way is to find some images that you like from /usr/share/images/desktop-base/, then use update-alternatives to change the desktop-background group:
update-alternatives --config desktop-background
See also
lightdm - Debian packages
LightDM at freedesktop.org, Launchpad