These entries are not required but are commonly used:
DefaultDepth
The default color depth (bits per pixel) to be used. This can be overridden from
the X server command line using the -depth option. Standard values are 8, 15,
16, and 24; I recommend using 24 on all modern video cards.
SubSection "Display"
Specifies the available resolutions and other details for the display setup on this
screen. This usually includes just two entries and is closed off with the keyword
EndSubSection. The two entries are described as follows:
Depth
The color depth (bits per pixel) for this SubSection. The SubSection with a
depth that matches the server??™s color depth (which is usually the one specified
in the DefaultDepth entry) is the one used by the server.
Modes
A list of available video modes. The first entry in the list is the default mode.
Most video modes are named with the resolution they provide (e.g.,
"640x480"). To find out which modes are available for a particular monitor
and video card, consult the X server log file (Section 3.15).
3.5
48 Chapter 3: Basic X.org Configuration
Monitor
The Monitor section is often quite simple:
Section "Monitor"
Identifier "Monitor0"
EndSection
In this example, the Monitor section contains only an Identifier entry.
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