Com o Optimus habilitado e a detecção de SO ativada no BIOS, eu tenho dois monitores externos conectados por DVI (docking - placa Nvidia) e o laptop LCD (placa Intel) para funcionar. Eu também obtive o VGA (placa Intel) no trabalho de encaixe, mas não consegui não tê-lo como um clone do LCD do laptop.
Aqui está a minha configuração do xorg com o Xinerama ativado:
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "ScreenNvidia0" 0 0
Screen 1 "ScreenNvidia1" RightOf "ScreenNvidia0"
Screen 2 "ScreenIntel" RightOf "ScreenNvidia1"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "true"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "MonitorNvidia0"
VendorName "Unknown"
ModelName "Samsung SyncMaster"
HorizSync 30.0 - 81.0
VertRefresh 50.0 - 63.0
Option "DPMS"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "MonitorNvidia1"
VendorName "Unknown"
ModelName "Samsung SyncMaster"
HorizSync 30.0 - 81.0
VertRefresh 50.0 - 63.0
Option "DPMS"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "MonitorIntel"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 30.0 - 81.0
VertRefresh 50.0 - 63.0
Option "DPMS"
EndSection
Section "Device"
Identifier "DeviceNvidia0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "1:0:0"
Option "RegistryDwords" "EnableBrightnessControl=1"
Screen 0
EndSection
Section "Device"
Identifier "DeviceNvidia1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BusID "1:0:0"
Option "RegistryDwords" "EnableBrightnessControl=1"
Screen 1
EndSection
Section "Device"
Identifier "DeviceIntel"
Driver "intel"
BusID "0:2:0"
Option "monitor-VGA1" "VGA1"
Option "monitor-TV" "TV"
Option "monitor-LVCD1" "LVCD1"
Option "Clone" "off"
EndSection
Section "Monitor"
Identifier "VGA1"
EndSection
Section "Monitor"
Identifier "LVCD1"
Option "DPMS"
EndSection
Section "Monitor"
Identifier "TV"
Option "Ignore" "false"
EndSection
Section "Screen"
Identifier "ScreenNvidia0"
Device "DeviceNvidia0"
Monitor "MonitorNvidia0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1920x1200"
EndSubSection
EndSection
Section "Screen"
Identifier "ScreenNvidia1"
Device "DeviceNvidia1"
Monitor "MonitorNvidia1"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1920x1200"
EndSubSection
EndSection
Section "Screen"
Identifier "ScreenIntel"
Device "DeviceIntel"
Monitor "MonitorIntel"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1900x1200"
EndSubSection
SubSection "Display"
Depth 24
Modes "1920x1200"
EndSubSection
EndSection
Na seção "DeviceIntel" é minha última tentativa de obter mais de um monitor na placa Intel.
Aqui está um extrato do meu "lspci":
$ lspci |grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation Device 1057 (rev a1)