Lightdm の概要
lightdm は GTK
に基づいて構築されている、軽量なディスプレイマネージャーです。
![[注記]](../images/note.png)
注記
LFS や依存パッケージが本ブックに示す最新安定バージョンでなかった場合には、BLFS
開発版においては、パッケージのビルドや処理実行が適切に行われないことがあります。
Lightdm パッケージ情報
追加のダウンロード
注記
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.
Lightdm の依存パッケージ
必須
Exo-4.18.0 (for the greeter), libgcrypt-1.10.3, itstool-2.0.7,
Linux-PAM-1.5.3, and Xorg-Server-21.1.10 (Runtime)
推奨
gobject-introspection-1.78.1,
libxklavier-5.4, Vala-0.56.14
任意
AccountsService-23.13.9 (run time),
at-spi2-core-2.50.0, GTK-Doc-1.33.2, (Qt-5.15.11 または qt-alternate-5.15.11), libido, libindicator
Lightdm のインストール
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/*
以下のコマンドを実行して lightdm をビルドします。
./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
このパッケージにテストスイートはありません。
root ユーザーになって以下を実行します。
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
次に greeter をビルドします。
tar -xf ../lightdm-gtk-greeter-2.0.8.tar.gz &&
cd lightdm-gtk-greeter-2.0.8 &&
./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-2.0.8 &&
make
root ユーザーになって以下を実行します。
make install
注記
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
コマンド説明
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.
lightdm の設定
設定ファイル
/etc/lightdm/{lightdm,users,keys}.conf
ブートスクリプト
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-20231119 package and adjust
/etc/inittab by running as the
root user:
make install-lightdm
Starting lightdm
The lightdm greeter
can be started from the command line as the root user:
telinit 5
Available
Sessions
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.