LightDM installation instead KDM

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Switch from KDM to LightDM on existing KDE installations.

Starting with the 2013.2 release "December" siduction uses LightDM as login manager for KDE. If you want to switch to the same on an older system still using kdm, you can easily do this.

Installation

An overview of existing LightDM packages, namely greeters, shows apt-cache search lightdm. If we want the kde-greeter for KDE we just do(ridersonthestorm as example):

apt-get update
apt-get install lightdm lightdm-kde-greeter siduction-art-lightdm-ridersonthestorm

(Note: siduction default would be lightdm-gtk-greeter instead, so that is what is officially supported. Advantage of kde-greeter is integration in KDE's systemsettings, but some people reported this package to be buggy).

If you are asked to configure the default display manager, choose lightdm. The alternatives-system sets the default greeter to gtk, so after installation you have to choose the lightdm-kde-greeter option at

update-alternatives --config lightdm-greeter

After installation, go to KDE systemsettings -> login screen, here is the configuration for LightDM. Select a background picture, a theme (userbar or classic), or configure autologin and guestlogin on the advanced-tab.

Clean up

If your system successfully reboots using lightdm, you might remove kdm

apt-get purge kdm

Screenshots

http://paste.siduction.org/20140108102811.png
http://paste.siduction.org/20140108102917.png
http://paste.siduction.org/20140108102937.png


Further Configuration

Some wikis (arch[1], ubuntu[2]) mention the tool lightdm-set-defaults to configure LightDm instead of directly editing /etc/lightdm/lightdm.conf, which in debian sid and testing has to be run from the path:

32-bit: /usr/lib/i386-linux-gnu/lightdm/lightdm-set-defaults
64-bit: /usr/lib/x86_64-linux-gnu/lightdm/lightdm-set-defaults

Ref

--Der bud (Diskussion) 15:10, 8. Jan. 2014 (CET)