Graphics Administration Guide (July 2008)

Grayed out screen icons represent screens that have not been configured for use by the
X Server. You can select these grayed out icons and choose the Add Screen to
Configuration menu item to add screens to the X*screens.
using setmon to configure the monitor
setmon is a configuration tool used to change the monitor settings for a monitor attached
to a graphics device. This tool permits you to change the monitor's refresh rate and
frame buffer resolution. To change the monitor setting, the setmon command can be
executed directly or done through SAM/SMH.
The setmon executable is located at /opt/graphics/common/bin/setmon. Under
SAM/SMH this component is located under the top-level “Display” panel, under
“Monitor Configuration”.
NOTE: Changing the monitor type while the X Server is running will necessitate
killing and restarting the X Server. In order to change the monitor settings, the X Server
needs to be running on the device specified.
X*screens file
For manual changes, please refer to the configuration files in the /etc/X11/ directory.
Three files of particular interest are the X0screens, X0devices, and X0pointerkeys files.
description of the X*screens configuration file
This file belongs in /etc/X11/X*screens, where “*” is the display number of the server.
For example, the “X0screens” file is used when the $DISPLAY environment variable
is set to hostname:0.screen and the server is invoked using the “:0” option.
The X*screens file is used to specify:
• Device-independent server options, and
• For each screen:
— what device file to use (required),
— the default visual,
— monitor size, and
— device-dependent screen options.
Note that all of the items above, except for device-independent server options, are
specified on a per-screen basis.
The X Server supports up to four screens at a time. Specifying more than four screens
will cause a server error message.
X Server configuration 39