Graphics Administration Guide (April 2009)

There will NOT be more than one IRC virtual mouse or keyboard. The hardware does not support
it.
Screen section
The configuration file may have multiple Screen sections. There must be at least one, for the
“screen” being used. A “screen” binds a graphics device (Device section) and a monitor (Monitor
section) together. A Screen section is considered “active” if it is referenced by an active
ServerLayout section. If neither of these is present, the first Screen section found in the
configuration file is considered the active one. Screen sections have the following format:
Section “Screen”
Identifier “ScreenID”
Device “DeviceID”
Monitor “MonitorID”
DefaultDepth <Depth>
Option ...
.
.
SubSection “Display”
.
.
EndSubSection
.
EndSection
The Identifier entry specifies the unique name for this screen. The Identifier generally must match
a ScreenID listed in the active ServerLayout section. The Screen section provides information
specific to the whole screen, including screen-specific Options. In multi-screen configurations,
there will be multiple active Screen sections, one for each head.
The Device keyword specifies which Device section is used for this screen. This is what binds a
specific graphics card to a screen. The DeviceID must match the Identifier of a Device section in
the configuration file.
The Monitor keyword specifies which Monitor section is used for this screen. This is what binds
a specific monitor to the screen. The MonitorID must match the Identifier of a Monitor section
in the configuration file.
The DefaultDepth keyword specifies which color depth the server should use by default. The
-depth command line option can be used to override this. If neither is specified, the default depth
is driver specific, but in most cases is 8.
Various Option flags may be specified in the Screen section. Some are driver specific and are
described in the driver documentation. Driver-independent options are described here.
Table 2-3 Options for Screen section
DescriptionEntry PositionEntry
Enables XAA (X Acceleration Architecture), a mechanism that makes video
cards' 2D hardware acceleration available to the Xserver. This option is on
by default. There are many options to disable specific accelerated operations.
Note that disabling an operation will have no effect if the operation is not
accelerated (whether due to lack of support in the hardware or in the driver).
Source: XF86Config man page.
NAAccel
Each Screen section must contain one or more Display subsections. Those subsections provide
depth configuration information, and the one chosen depends on the depth that is being used
for the screen. The Display subsection format is described in the section below.
Display subsection
The Screen sections include one or more Display subsections. One Display subsection may be
provided for each depth that the server supports. The size of the Xserver’s virtual screen may
the XF86Config file 17