In this configuration, the monitor on screen 1 will show the entire screen, while the
monitor on screen 0 will show a scrolling enlargement of one portion of the display
??”potentially useful for people with visual impairment. Unfortunately, Xinerama
will only display the mouse cursor on one monitor at a time, and unless the
cursor is on the scrolling screen, there is no way to scroll it. Since the mouse cursor
will appear on the lowest-numbered screen, the scrolling screen must be configured
as screen 0.
Some of the drivers that permit the simultaneous use of two video outputs
from one video card (Section 4.7) enable the mouse pointer to
appear on both monitors simultaneously when using an overlapping
configuration.
The Screen and ServerLayout sections for this configuration look like this:
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama"
EndSection
Section "Screen" # Scrolling, magnified display
Identifier "Screen1"
Figure 4-7. A scrolling physical screen within a virtual screen, overlapping another screen
Physical
screen
0
Virtual
screen
0
Screen
1
4.
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