HP PCI AMD Radeon® 7000 Graphics Adapter Installation Guide

Manual Multi-Screen Configuration
Alternatively you can configure multiple screens by manually editing the /etc/X11/
Xf86Config file. The following example will show you how to configure three (3) screens.
Xf86Config Changes
There are three sections in the configuration file you need to change:
1. ServerLayout section contains references to the Screen sections.
2. Screen sections contain references to the Device sections.
3. Device sections.
For this example, we will assume there are two (2) HP PCI AMD Radeon 7000 Graphics Adapters
in the system. These graphics cards have the device files /dev/gvid0 and /dev/gvid1. We
will change the Xf86Config file to allow for a three-screened (3) multi-head system. In this
configuration, two (2) screens will come from the first graphics card (e.g. /dev/gvid0) and the
remaining screen will come from the second graphics card (e.g. /dev/gvid1).
The lowest level is the Device section. This maps a physical device to a device identifier. The
three (3) Device sections for this example follows:
Section “Device”
Identifier “ATI Radeon 7000 (0) Connector 1”
DeviceFile “/dev/gvid0”
EndSection
Section “Device”
Identifier “ATI Radeon 7000 (0) Connector 2”
DeviceFile “/dev/gvid0”
Screen 1
EndSection
Section “Device”
Identifier “ATI Radeon 7000 (1) Connector 1”
DeviceFile “/dev/gvid1”
EndSection
The first device, ATI Radeon 7000 (0) Connector 1 is the first screen on the first device.
the second device, ATI Radeon 7000 (0) Connector 2 is the second screen on the first
device. Note that it has the Screen 1 field, which selects the second video output on the graphics
card. The third device, ATI Radeon 7000 (1) Connector 1 is the first screen on the second
device.
Once the Device sections are defined, you can define the Screen section, which maps a screen
to a physical device. The Screen sections use the Identifier field that was defined for each
of the Device sections. The three (3) Screen sections for this example follows:
Section Screen
Identifier “Screen 0-1”
Device “ATI Radeon 7000 (0) Connector 1”
Monitor “Monitor 0”
# Include other Screen info here, including other SubSections
EndSection
Section Screen
Identifier “Screen 0-2”
Device “ATI Radeon 7000 (0) Connector 2
Monitor “Monitor 0”
# Include other Screen info here, including other SubSections
EndSection
Section Screen
Identifier “Screen 1-1”
Device “ATI Radeon 7000 (1) Connector 1”
Monitor “Monitor 0”
26 HP-UX Configuration