From project home page:
- The "Lightweight X11 Desktop Environment" is an extremely fast-performing and energy-saving desktop environment. Maintained by an international community of developers, it comes with a beautiful interface, multi-language support, standard keyboard short cuts and additional features like tabbed file browsing. LXDE uses less CPU and less RAM than other environments. It is especially designed for cloud computers with low hardware specifications, such as, netbooks, mobile devices (e.g. MIDs) or older computers.
- 1 Installation
- 2 Starting the desktop
- 3 Tips and tricks
- 4 Troubleshooting
- 5 See also
LXDE requires at least installed. The group contains the full desktop., and (or another window manager) to be
GTK 3 version
An experimental GTK 3 build of LXDE can be installed with thegroup.
Starting the desktop
To use startx, add to xinitrc:
See also Start X at login.
Tips and tricks
The application menu works by resolving the
.desktop files located in
~/.local/share/applications/. To add or edit a menu item, see desktop entries. Third party menu editors can be found in the AUR (e.g. AUR). There also official ones like (gnome), (mate)
Applications can be automatically started in a couple of ways:
LXDE implements XDG Autostart.
- Via LXsession
Each line in
~/.config/lxsession/LXDE/autostart represents a command to be executed. If a line starts with
@, and the command following it crashes, the command is automatically re-executed. For example:
There is also a global autostart file at
Mouse and key bindings (i.e. keyboard shortcuts) are implemented with Openbox. LXDE users should follow the Openbox wiki to edit
An optional GUI for editing the key bindings is provided by the
rc.xml by default, you can direct it to the LXDE configuration as follows:
$ obkey ~/.config/openbox/lxde-rc.xml
See  for more information.
GTK look and feel, including the cursor theme. Settings configured with LXAppearance are written to
~/.icons/default/index.theme. See also Cursor themes.
Digital clock applet time
You can right click on the digital clock applet on the panel and set how it displays the current time using the strftime format. Seefor details.
The Screen Lock icon executes a script (located at
/usr/bin/lxlock) which searches for a number of well known screen lockers and uses the first one it finds to lock the screen. See lxlock on GitHub.
/etc/xdg/lxsession/LXDE/autostart (from the package) lists XScreenSaver which will be launched automatically.
See DPMS on how to control the screen saver without external programs.
Default icons used by LXpanel are stored in
/usr/share/pixmaps/ and any custom icons should be saved there as well.
To change default icons for applications, see Desktop entries#Icons.
The panel's menus can be configured in
/etc/xdg/menus/lxde-applications.menu as per the xdg-menu format to work with applications from other sessions (notably MATE) to add some of the function-ability that LXDE lacks.
Use a different window manager
openbox-lxde in either file with a window manager of your choice:
WM --replace as defined in #Autostart, where WM is the name of the window manager executable being started. This means that openbox will be started first on each login and will then immediately be replaced. Note that Openbox and LXDE do not share the same
rc.xml and keyboard shortcuts may differ. See xbindkeys.
Using a composite manager
LXDE doesnt enable compositing by default that leads to screen tearing problem. If you not okay with this, you can sacrifice a little bit more resources to enable window compositing either by installing compositing manager or you can also subtitute lxde with another window manager that support compositing.
Some apps unable to start
Recent shift of LXDE to gtk3 introduce some bugs that may cause segmentation fault and preventing application to start (most notably the customize look and fell settings or known as lxappearance). Until this problem fully fixed, you can try using JWM to bypass gtk3 segfault:
- install JWM
$ sudo pacman -S jwm
- subtitute LXDE with jwm, open terminal and run:
- this may cause a little glitch but now you should be able to open segfault app normally
- after you are done, relogin to refresh LXDE desktop
NTFS with Chinese characters
For a storage device with an NTFS filesystem, you will need to install the NTFS-3G package. Generally, PCManFM works well with NTFS filesystems, however there is one bug affecting NTFS users that if you have files or directories on an NTFS filesystem, the names of which contain non-latin characters (e.g. Chinese characters) may disappear when opening (or auto-mounting) the NTFS volume. This happens because the lxsession mount-helper is not correctly parsing the policies and locale options. There is a workaround for this:
Create a new
/usr/local/bin/mount.ntfs-3g with a new Bash script containing:
#!/bin/bash /usr/bin/ntfs-3g $1 $2 -o locale=en_US.UTF-8
And then make it executable:
# chmod +x /usr/local/bin/mount.ntfs-3g
With some GTK themes, launching lxpanel will lead to the following error:
lxpanel: cairo-scaled-font.c:459: _cairo_scaled_glyph_page_destroy: Assertion `!scaled_font->cache_frozen' failed.
In this case install.
If lxpanel crashes when browsing particular unicode web pages, install.
LXPanel Task Bar icon size
The icons of running applications do not match the set Icon size in Panel Settings > Geometry but are 4px smaller which makes some of them blurry. To have clear looking 32px icons in the Task Bar the set Icon size has to be 36px which would blur the icons of the rest of your active Panel Applets. To get around this create additional panel(s) and have them collectively make a single continuous looking panel by adjusting the Alignment and Margin in Panel Settings > Geometry.
Fake transparency in LXTerminal
The latest version of VTE terminal widget library requires a compositing window manager for background transparency. The unmaintained, legacy GTK 2 version of VTE has fake transparency, where the desktop background image will show through the terminal. It you prefer fake transparency, the GTK 2 version of LXTerminal can be installed with the AUR package.