跟垂直雙螢幕不同的地方是多一個 Device Section, 雙螢幕各自有一組 Device-> Monitor-> Screen, 並且兩個 Screen 的解析度是各自設定的 (modes), 沒有 Virtual Display 的設定, 依照 ServerLayout 可以讓 Input Device 在兩個螢幕間移動, 但視窗在雙螢幕間無法拖拉跨越, 是類似 KVM 的功能。
xorg.conf
Section "Monitor"
#DisplaySize 300 230 # mm
Identifier "VGA Monitor"
VendorName "SAM"
ModelName "SyncMaster"
HorizSync 30.0 - 60.0
VertRefresh 56.0 - 75.0
Option "PreferredMode" "1024x768"
Option "Position" "0 0"
Option "DPMS"
EndSection
Section "Monitor"
#DisplaySize 300 230 # mm
Identifier "DVI-0 Monitor"
VendorName "SAM"
ModelName "SyncMaster"
HorizSync 30.0 - 60.0
VertRefresh 56.0 - 75.0
Option "PreferredMode" "1280x1024"
Option "Position" "0 768"
Option "DPMS"
Option "below" "VGA-0"
EndSection
Section "Device"
Identifier "Card0"
Driver "radeon"
VendorName "ATI Technologies Inc"
BoardName "RV370 5B60 [Radeon X300 (PCIE)]"
BusID "PCI:5:0:0"
Screen 0
Option "monitor-VGA-0" "VGA Monitor"
Option "monitor-DVI-0" "DVI Monitor"
EndSection
Section "Device"
Identifier "Card1"
Driver "radeon"
VendorName "ATI Technologies Inc"
BoardName "RV370 5B60 [Radeon X300 (PCIE)]"
BusID "PCI:5:0:0"
Screen 1
Option "monitor-VGA-0" "VGA Monitor"
Option "monitor-DVI-0" "DVI Monitor"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "VGA Monitor"
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "DVI Monitor"
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" 0 768
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
