LightDM
LightDM is a cross-desktop display manager whose aim is to be the standard display manager for the X server.
The key features (as listed by upstream) include:
- A well-defined greeter API allowing multiple GUIs.
- Support for all display manager use cases, with plugins where appropriate.
- Low code complexity.
- Fast performance.
安装
USE 标记
USE flags for x11-misc/lightdm A lightweight display manager
audit
|
Enable support for Linux audit subsystem using sys-process/audit |
elogind
|
Enable session tracking via sys-auth/elogind |
gnome
|
Add GNOME support |
gtk
|
Pull in the gtk+ greeter |
introspection
|
Add support for GObject based introspection |
non-root
|
Use non-root user by default |
qt5
|
Add support for the Qt 5 application and UI framework |
systemd
|
Enable use of systemd-specific libraries and features like socket activation or session tracking |
vala
|
Enable bindings for dev-lang/vala |
Emerge
安装lightdm:
root #
emerge --ask x11-misc/lightdm
配置
The (global) configuration file for LightDM can be found at:
/etc/lightdm/lightdm.conf
GTK+
The GTK+ greeter configuration can be modified by manually editing the following file:
/etc/lightdm/lightdm-gtk-greeter.conf
RazorQt
The RazorQt greeter currently does not offer any configuration options.
启动服务
OpenRC
把 LightDM设置为默认显示管理器:
/etc/conf.d/xdm
DISPLAYMANAGER="lightdm"
要在启动时启动LightDM,请将dbus和xdm添加到默认运行级别:
root #
rc-update add dbus default
root #
rc-update add xdm default
现在启动LightDM:
root #
/etc/init.d/dbus start
root #
/etc/init.d/xdm start
systemd
启动LightDM时启动:
root #
systemctl enable lightdm
现在启动LightDM:
root #
systemctl start lightdm
命令行工具
LightDM includes a command-line tool, dm-tool, which can be used to switch user sessions, lock the current seat, etc. To see a list of available commands, use the --help
option:
user $
dm-tool --help
例如,锁定当前位置:
user $
dm-tool lock
Tips
Running commands at log-in
A user can run some programs automatically when logging in using LightDM by adding commands in ~/.xprofile, which will be sourced by LightDM. For example:
~/.xprofile
# Starting redshift, setting the dpi with xrandr and set the brightness to 50% with xbacklight xrandr --dpi 192 & redshift-gtk & xbacklight -set 50 &
Unlock GNOME Keyring
To unlock your GNOME Keyring (gnome-base/gnome-keyring) automatically on login, edit /etc/pam.d/lightdm to look as follows. Note: Lines ending with the comment #keyring
should be added.
/etc/pam.d/lightdm
auth include system-local-login auth optional pam_gnome_keyring.so #keyring account include system-local-login session include system-local-login session optional pam_gnome_keyring.so auto_start #keyring
故障排除
光标主题不工作
As of March 28, 2015, the stable versions of lightdm (lightdm-1.10.3) and lightdm-gtk-greeter (lightdm-gtk-greeter-1.7.0) have a bug that affects some DEs such as XFCE with setting the mouse cursor. Applications will apply the new mouse theme, but the root window where the window manager draws on does not. To get around this, simply unmask the latest versions (lightdm-1.13.2 and lightdm-gtk-greeter-2.0.0 at the time of writing) and the cursors will be set correctly.
更多信息可以在 Ubuntu's bug #1024482.找到
See also
- SDDM — a modern display manager that supports both the X11 server and the Wayland protocol.
- XDM