Mount Options
Chapter 5 The X Window System
5.7 Desktop Environments
Contributed by Valentino Vaschetto.
This section describes the different desktop environments available for X on FreeBSD. A “desktop environment” can mean anything ranging from a simple window manager to a complete suite of desktop applications, such as KDE or GNOME.
5.7.1 GNOME
5.7.1.1 About GNOME
GNOME is a user-friendly desktop environment that enables users to easily use and configure their computers.
GNOME includes a panel (for starting applications and displaying status), a desktop (where data and applications can be placed), a set of standard desktop tools and applications, and a set of conventions that make it easy for applications to cooperate and be consistent with each other. Users of other operating systems or environments should feel right at home using the powerful graphics-driven environment that GNOME provides. More information regarding GNOME on FreeBSD can be found on the FreeBSD GNOME Project (http://www.FreeBSD.org/gnome)’s web site. The web site also contains fairly comprehensive FAQs about installing, configuring, and managing
GNOME.
5.7.1.2 Installing GNOME
The software can be easily installed from a package or the Ports Collection:
To install the GNOME package from the network, simply type:
# pkg_add -r gnome2
To build GNOME from source, use the ports tree:
# cd /usr/ports/x11/gnome2
# make install clean
Once GNOME is installed, the X server must be told to start GNOME instead of a default window manager.
The easiest way to start GNOME is with GDM, the GNOME Display Manager. GDM, which is installed as a part of the GNOME desktop (but is disabled by default), can be enabled by addinggdm_enable="YES"to
/etc/rc.conf. Once you have rebooted, GNOME will start automatically once you log in — no further configuration is necessary.
GNOME may also be started from the command-line by properly configuring a file named.xinitrc. If a custom .xinitrcis already in place, simply replace the line that starts the current window manager with one that starts /usr/local/bin/gnome-session instead. If nothing special has been done to the configuration file, then it is enough simply to type:
% echo "/usr/local/bin/gnome-session" > ~/.xinitrc
Next, typestartx, and the GNOME desktop environment will be started.
Note: If an older display manager, like XDM, is being used, this will not work. Instead, create an executable .xsessionfile with the same command in it. To do this, edit the file and replace the existing window manager command with /usr/local/bin/gnome-session:
% echo "#!/bin/sh" > ~/.xsession
% echo "/usr/local/bin/gnome-session" >> ~/.xsession
% chmod +x ~/.xsession
Yet another option is to configure the display manager to allow choosing the window manager at login time; the section on KDE details explains how to do this for kdm, the display manager of KDE.
5.7.1.3 Anti-aliased Fonts with GNOME
X11 supports anti-aliasing via its “RENDER” extension. GTK+ 2.0 and greater (the toolkit used by GNOME) can make use of this functionality. Configuring anti-aliasing is described in Section 5.5.3. So, with up-to-date software, anti-aliasing is possible within the GNOME desktop. Just go toApplications−→Desktop Preferences−→Font, and select eitherBest shapes,Best contrast, orSubpixel smoothing (LCDs). For a GTK+ application that is not part of the GNOME desktop, set the environment variableGDK_USE_XFTto1before launching the program.
5.7.2 KDE
5.7.2.1 About KDE
KDE is an easy to use contemporary desktop environment. Some of the things that KDE brings to the user are:
• A beautiful contemporary desktop
• A desktop exhibiting complete network transparency
• An integrated help system allowing for convenient, consistent access to help on the use of the KDE desktop and its applications
• Consistent look and feel of all KDE applications
• Standardized menu and toolbars, keybindings, color-schemes, etc.
• Internationalization: KDE is available in more than 40 languages
• Centralized, consistent, dialog-driven desktop configuration
• A great number of useful KDE applications
KDE comes with a web browser called Konqueror, which is a solid competitor to other existing web browsers on UNIX systems. More information on KDE can be found on the KDE website (http://www.kde.org/). For FreeBSD specific information and resources on KDE, consult the KDE on FreeBSD team (http://freebsd.kde.org/)’s website.
There are two versions of KDE available on FreeBSD. Version 3 has been around for a long time, and is very mature.
Version 4, the next generation, is also available in the Ports Collection. They can even be installed side by side.
5.7.2.2 Installing KDE
Just as with GNOME or any other desktop environment, the software can be easily installed from a package or the Ports Collection:
To install the KDE3 package from the network, simply type:
# pkg_add -r kde
To install the KDE4 package from the network, simply type:
# pkg_add -r kde4
pkg_add(1) will automatically fetch the latest version of the application.
To build KDE3 from source, use the ports tree:
# cd /usr/ports/x11/kde3
# make install clean
To build KDE4 from source, use the ports tree:
# cd /usr/ports/x11/kde4
# make install clean
After KDE has been installed, the X server must be told to launch this application instead of the default window manager. This is accomplished by editing the.xinitrcfile:
For KDE3:
% echo "exec startkde" > ~/.xinitrc For KDE4:
% echo "exec /usr/local/kde4/bin/startkde" > ~/.xinitrc
Now, whenever the X Window System is invoked withstartx, KDE will be the desktop.
If a display manager such as XDM is being used, the configuration is slightly different. Edit the.xsessionfile instead. Instructions for kdm are described later in this chapter.
5.7.3 More Details on KDE
Now that KDE is installed on the system, most things can be discovered through the help pages, or just by pointing and clicking at various menus. Windows or Mac® users will feel quite at home.
The best reference for KDE is the on-line documentation. KDE comes with its own web browser, Konqueror, dozens of useful applications, and extensive documentation. The remainder of this section discusses the technical items that are difficult to learn by random exploration.
5.7.3.1 The KDE Display Manager
An administrator of a multi-user system may wish to have a graphical login screen to welcome users. XDM can be
and include more login-time options. In particular, users can easily choose (via a menu) which desktop environment (KDE, GNOME, or something else) to run after logging on.
To enable kdm, thettyv8entry in/etc/ttyshas to be adapted. The line should look as follows:
For KDE3:
ttyv8 "/usr/local/bin/kdm -nodaemon" xterm on secure For KDE4:
ttyv8 "/usr/local/kde4/bin/kdm -nodaemon" xterm on secure
5.7.4 XFce
5.7.4.1 About XFce
XFce is a desktop environment based on the GTK+ toolkit used by GNOME, but is much more lightweight and meant for those who want a simple, efficient desktop which is nevertheless easy to use and configure. Visually, it looks very much like CDE, found on commercial UNIX systems. Some of XFce’s features are:
• A simple, easy-to-handle desktop
• Fully configurable via mouse, with drag and drop, etc.
• Main panel similar to CDE, with menus, applets and applications launchers
• Integrated window manager, file manager, sound manager, GNOME compliance module, and more
• Themeable (since it uses GTK+)
• Fast, light and efficient: ideal for older/slower machines or machines with memory limitations More information on XFce can be found on the XFce website (http://www.xfce.org/).
5.7.4.2 Installing XFce
A binary package for XFce exists (at the time of writing). To install, simply type:
# pkg_add -r xfce4
Alternatively, to build from source, use the ports collection:
# cd /usr/ports/x11-wm/xfce4
# make install clean
Now, tell the X server to launch XFce the next time X is started. Simply type this:
% echo "/usr/local/bin/startxfce4" > ~/.xinitrc
The next time X is started, XFce will be the desktop. As before, if a display manager like XDM is being used, create