Configurazione xorg con 2 monitor (Dual Head)

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
#   sudo dpkg-reconfigure -phigh xserver-xorg
Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"it"
	Option		"XkbOptions"	"lv3:ralt_switch"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
EndSection


Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizEdgeScroll"	"0"
EndSection
Section "Device"
	Identifier	"Configured Video Device"
	Boardname	"vesa"
	Busid		"PCI:1:0:0"
	Driver		"sis"
	Screen	0
	Option "MergedFB" "true" # Abilita MergedFB
	Option "MonitorLayout" "LVDS (TMDS), CRT" # LVDS = Laptop Screen, TMDS = DVI Port, CRT = VGA Port NOT MONITOR TYPE!
	#Option "CRT2Hsync" "30-65" #Horizontal Sync del monitor (controllare nel manuale del monitor per i valori esatti)
	#Option "CRT2VRefresh" "50-75" #Vertical Refresh rate del Monitor (controllare nel manuale del monitor per i valori esatti)
	Option "OverlayOnCRTC2" "true"
	Option "CRT2Position" "LeftOf" #Posizione fisica del secondo monitor rispetto al primo. I valori possono essere: LeftOf, RightOf, Above, Below, and Clone.
	Option "MetaModes" "1280x1024-1280x800" #Risoluzione per il primo e secondo monitor 
	Option "MergedXineramaCRT2IsScreen0" "false" #determina quale schermo sarà il primario e quale il secondario; i valori possono essere "true" or "false"

	#Option "DDCMode" "True"
	#Option "MonitorLayout" "LVDS,CRT"
EndSection

Section "Monitor"
	Identifier	"Configured Monitor"
	Vendorname	"Generic LCD Display"
	Modelname	"LCD Panel 1280x800"
	#Horizsync	31.5-50.0
	#Vertrefresh	56.0 - 65.0
  	#modeline  "1280x800@60" 83.46 1280 1344 1480 1680 800 801 804 828 -hsync +vsync
	Gamma	1.0
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"Configured Video Device"
	Monitor		"Configured Monitor"
	Defaultdepth	24
	SubSection "Display"
		Depth	24
		#Virtual	1280	800
		Modes		"1280x1024 1280x800"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	screen  "Default Screen" #LeftOf "Secondary Screen"
	#screen 1 "Secondary Screen" 0 0 #RightOf "Default Screen"
	Inputdevice	"Synaptics Touchpad"
	#Inputdevice	"Configured Mouse"
	#Option "Xinerama" "true"
EndSection

Section "Module"
	Load		"glx"
	Load		"GLcore"
	Load		"v4l"
EndSection