Chapter 16. The X Window System
Chapter 3 introduced
Linux's graphical desktops, and many subsequent chapters showed you the
spiffy and powerful tools you could run on them. Rarely do you have to
deal with the underpinnings that make all this possible, but
occasionally your screen resolution isn't as good as it could be, or you
have trouble getting graphics to start. At these times you notice that
error messages are referring to an X server or to various files and
libraries with an x in them.
Basically, the X Window System encompasses all the software that lets a CPU understand a video card and get graphics to appear on a monitor. X goes far beyond this, though: it provides an interface of almost unlimited flexibility to let programs display graphics, interact with the user, and exchange data with other graphical programs. KDE and GNOME are both sets of libraries and tools that run on X. In this chapter, we tell you how to install and configure the X Window System in case it was not done by your distribution properly.
A History of X
It's difficult to describe the X Window System in a nutshell. X is a complete windowing graphics interface that runs on almost all computer systems, but was established mostly on Unix and now on Linux. X provides a huge number of options to both the programmer and the user. For instance, at least half a dozen window managers are available for X, each one offering a different interface for manipulating windows. Your distribution has chosen a window manager ...
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