How can I use multi-display on laptop
my laptop is IBM thinkpad R51 2887 9kc
the graphic driver is 82855
In debian, I use the driver "i810"
I can't use the LCD and the extra AGP output at the same time. If I
change the BIOS to BOOT from LCD, the extra AGP has no signal, if I
change the BIOS to BOOT form the extra AGP, the LCD has no signal.
there is a key on my laptop to switch the two displays.
But I just can't let the two displays to be active at the same time.
I want to know is my driver wrong?
here is part of my XF86Config-4
it doesn't work:
Section "Device"
Identifier "video0"
Driver "i810"
BusID "PCI:0:2:0"
Screen 0
Option "NoDDC"
EndSection
Section "Device"
Identifier "video1"
Driver "i810"
BusID "PCI:0:2:0"
Screen 1
Option "NoDDC"
EndSection
Section "Monitor"
Identifier "monitor0"
HorizSync 28-49
VertRefresh 43-72
Option "DPMS"
EndSection
Section "Monitor"
Identifier "monitor1"
HorizSync 28-49
VertRefresh 43-72
Option "DPMS"
EndSection
Section "Screen"
Identifier "screen1"
Device "video1"
Monitor "monitor1"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "Screen"
Identifier "screen0"
Device "video0"
Monitor "monitor0"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "multi"
Screen "screen0"
Option "Clone" "off"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "Generic Mouse"
Screen "screen1" RightOf "screen0" # this is the line causes error
EndSection
Section "DRI"
Mode 0666
EndSection
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