The lightdm package contains a lightweight display manager based upon GTK.
This package is known to build and work properly using an LFS 12.2 platform.
Download (HTTP): https://github.com/CanonicalLtd/lightdm/releases/download/1.32.0/lightdm-1.32.0.tar.xz
Download MD5 sum: e62a5da6c35f612e4d9575eda5c8d467
Download size: 508 KB
Estimated disk space required: 20 MB
Estimated build time: 0.2 SBU
The greeter is a program to present a graphical login screen. There are several alternative greeters, but the gtk+ package is the reference implementation. For a list of other greeters, see https://en.wikipedia.org/wiki/LightDM.
Download (HTTP): https://github.com/Xubuntu/lightdm-gtk-greeter/releases/download/lightdm-gtk-greeter-2.0.9/lightdm-gtk-greeter-2.0.9.tar.gz
Download MD5 sum: 35752d730f39293c2bbe884ef6963830
Download size: 592 KB
Estimated disk space required: 5.2 MB
Estimated build time: less than 0.1 SBU
Exo-4.18.0 (for the greeter), libgcrypt-1.11.0, itstool-2.0.7, Linux-PAM-1.6.1, and Xorg-Server-21.1.13 (Runtime)
GLib-2.80.4 (with GObject Introspection), libxklavier-5.4, and Vala-0.56.17
AccountsService-23.13.9 (run time), at-spi2-core-2.52.0, GTK-Doc-1.34.0, qt5-components-5.15.14, libido, and libindicator
First, create a dedicated user and group to take control of the
lightdm daemon after
it is started. Issue the following commands as the root
user:
groupadd -g 65 lightdm && useradd -c "Lightdm Daemon" \ -d /var/lib/lightdm \ -u 65 -g lightdm \ -s /bin/false lightdm
Then change the Linux-PAM configuration files so that elogind is used:
sed -i s/systemd/elogind/ data/pam/*
Install lightdm by running the following commands:
./configure --prefix=/usr \ --libexecdir=/usr/lib/lightdm \ --localstatedir=/var \ --sbindir=/usr/bin \ --sysconfdir=/etc \ --disable-static \ --disable-tests \ --with-greeter-user=lightdm \ --with-greeter-session=lightdm-gtk-greeter \ --docdir=/usr/share/doc/lightdm-1.32.0 && make
This package does not come with a test suite.
Now, as the root
user:
make install && cp tests/src/lightdm-session /usr/bin && sed -i '1 s/sh/bash --login/' /usr/bin/lightdm-session && rm -rf /etc/init && install -v -dm755 -o lightdm -g lightdm /var/lib/lightdm && install -v -dm755 -o lightdm -g lightdm /var/lib/lightdm-data && install -v -dm755 -o lightdm -g lightdm /var/cache/lightdm && install -v -dm770 -o lightdm -g lightdm /var/log/lightdm
Now build the greeter:
tar -xf ../lightdm-gtk-greeter-2.0.9.tar.gz && cd lightdm-gtk-greeter-2.0.9 && ./configure --prefix=/usr \ --libexecdir=/usr/lib/lightdm \ --sbindir=/usr/bin \ --sysconfdir=/etc \ --with-libxklavier \ --enable-kill-on-sigterm \ --disable-libido \ --disable-libindicator \ --disable-static \ --disable-maintainer-mode \ --docdir=/usr/share/doc/lightdm-gtk-greeter-2.0.9 && make
Now, as the root
user:
make install
If you installed Xorg in /opt, you will need to create a symbolic
link so lightdm can find the Xorg server. As the root
user:
ln -sf /opt/xorg/bin/Xorg /usr/bin/X
sed ... /usr/bin/lightdm-session: This command ensures that the initial login via the greeter sources /etc/profile and ~/.bash_profile. Without this, commands that depend on different environment variables may not work as expected.
/etc/lightdm/{lightdm,users,keys,lightdm-gtk-greeter}.conf
The configuration files offer many options. If, for instance, you
have a multiple monitor setup but prefer the login window to be
displayed on only one monitor, set
'active-monitor=<monitor-name>' in lightdm-gtk-greeter.conf
. For example you could
use active-monitor=HDMI-1
. You can
determine the monitor-names with xrandr --listmonitors. Note
that the monitor names may change if you change the graphics
driver and you may have to adjust the configuration accordingly.
To start lightdm
automatically when the system is switched to runlevel 5, install
the /etc/rc.d/init.d/xdm
script and
the /etc/sysconfig/xdm
configuration file included in the blfs-bootscripts-20240416 package and
adjust /etc/inittab
by running as
the root
user:
make install-lightdm
The lightdm greeter
can be started from the command line as the root
user:
telinit 5
The greeter offers a list of available sessions, depending on the
Window Managers and Desktop Environments installed. The list
includes sessions which have a corresponding .desktop
file installed under /usr/share/xsessions
. Most of the Window
Managers and Desktop Environments automatically provide those
files, but if necessary, you may include a custom one.