xorg et dual-head

[Jean Baptiste FAVRE <jean-b.favre@wanadoo.fr>]

Bonjour la liste,
J'ai un léger problème avec xorg:
Si je le configure comme Xfree86, c'est à dire déclarer 2 écrans, 2 
cartes graphiques (1 "virtuelle") et mapper tout ça dans le 
ServerLayout, alors je n'obtiens d'affichage que sur 1 écran.
Si je le configure comme suit, j'ai bien l'affichage sur mes 2 écrans 
(super) mais les fenêtres maximisées s'étalent sur les 2 écrans alors 
qu'avant, elles se limitaient à 1 seul. C'est ce que j'aimerais 
retrouver mais il n'y a pas moyen.

Une idée ?
@+
JB

Section "Files"
	FontPath	"/usr/lib/X11/fonts/misc"
	FontPath	"/usr/lib/X11/fonts/100dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/75dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/100dpi"
	FontPath	"/usr/lib/X11/fonts/75dpi"
	ModulePath	"/usr/X11R6/lib/modules"
EndSection


Section "Module"
	Load	"dbe"
	Load	"fbdevhw"
	Load	"record"
	Load	"dri"
	Load	"glx"
	Load	"freetype"
	Load	"type1"
	Load	"synaptics"
	Load	"extmod"
	SubSection "extmod"
		Option "omit xfree86-dga"
	EndSubSection
EndSection

Section "InputDevice"
	Identifier	"888E_Keyboard"
	Driver		"keyboard"
	Option		"CoreKeyboard"
	Option		"XkbRules"		"xorg"
	Option		"XkbModel"		"pc105"
	Option		"XkbLayout"		"fr"
	Option		"XkbOptions"		"compose:rwin"
EndSection

Section "InputDevice"
	Identifier	"888E_Touchpad"
	Driver		"synaptics"
	Option		"CorePointer"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"PS/2"
#	Option		"LeftEdge"      	"1700"
#	Option		"RightEdge"     	"5300"
#	Option		"TopEdge"       	"1700"
#	Option		"BottomEdge"    	"4200"
#	Option		"FingerLow"     	"25"
#	Option		"FingerHigh"    	"30"
#	Option		"MaxTapTime"    	"180"
#	Option		"MaxTapMove"    	"220"
#	Option		"VertScrollDelta"	"100"
#	Option		"MinSpeed"      	"0.06"
#	Option		"MaxSpeed"      	"0.12"
#	Option		"AccelFactor" 		"0.0010"
#	Option		"SHMConfig"     	"on"
EndSection

Section "InputDevice"
	Identifier	"Souris_USB"
	Driver		"mouse"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"ZAxisMapping"		"4 5"
EndSection

Section "Device"
	Identifier	"ATI_9000-1"
	BusID		"PCI:1:0:0"
	Driver		"radeon"
	Option		"MergedFB" "true"
	Option		"MonitorLayout" "LCD,CRT"
	Option 		"OverlayOnCRTC2" "true"
	Option		"MetaModes" "1280x1024-1280x1024"
	Option		"CRT2Position" "LeftOf"
	Option		"RenderAccel" "true"
EndSection

Section "Monitor"
	Identifier	"888E_LCD"
	Option		"DPMS"
EndSection
Section "Monitor"
	Identifier	"Proview_LCD"
	Option		"DPMS"
EndSection

Section "Screen"
	Identifier	"888E_Screen"
	Device		"ATI_9000-1"
	Monitor		"888E_LCD"
	Monitor		"Proview_LCD"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Virtual 	2560 1024
		Modes		"1280x1024"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Multihead_Layout"
	InputDevice	"888E_Keyboard"
	InputDevice	"888E_Touchpad"
	InputDevice	"Souris_USB"
	Screen 		"888E_Screen"  0 0
	Option "Xinerama" "false"
	Option "Clone" "false"
EndSection

Section "DRI"
	Mode	0666
EndSection

#Section "Extensions"
#	Option "Composite" "Enable"
#EndSection

Section "Files"
	FontPath	"/usr/lib/X11/fonts/misc"
	FontPath	"/usr/lib/X11/fonts/100dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/75dpi/:unscaled"
	FontPath	"/usr/lib/X11/fonts/100dpi"
	FontPath	"/usr/lib/X11/fonts/75dpi"
	ModulePath	"/usr/X11R6/lib/modules"
EndSection


#Section "Module"
#	Load	"dbe"
#	Load	"v4l"
#	Load	"ddc"
#	Load	"fbdevhw"
#	Load	"vbe"
#	Load	"record"
#	Load	"bitmap"
#	Load	"int10"
#	Load	"dri"
#	Load	"glx"
#	Load	"freetype"
#	Load	"type1"
#	Load	"synaptics"
#	Load	"extmod"
#	SubSection "extmod"
#		Option "omit xfree86-dga"
#	EndSubSection
#EndSection

Section "InputDevice"
	Identifier	"888E_Keyboard"
	Driver		"keyboard"
	Option		"CoreKeyboard"
	Option		"XkbRules"		"xorg"
	Option		"XkbModel"		"pc105"
	Option		"XkbLayout"		"fr"
	Option		"XkbOptions"		"compose:rwin"
EndSection

Section "InputDevice"
	Identifier	"888E_Touchpad"
	Driver		"synaptics"
	Option		"CorePointer"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"PS/2"
	Option		"LeftEdge"      	"1700"
	Option		"RightEdge"     	"5300"
	Option		"TopEdge"       	"1700"
	Option		"BottomEdge"    	"4200"
	Option		"FingerLow"     	"25"
	Option		"FingerHigh"    	"30"
	Option		"MaxTapTime"    	"180"
	Option		"MaxTapMove"    	"220"
	Option		"VertScrollDelta"	"100"
	Option		"MinSpeed"      	"0.06"
	Option		"MaxSpeed"      	"0.12"
	Option		"AccelFactor" 		"0.0010"
	Option		"SHMConfig"     	"on"
EndSection

Section "InputDevice"
	Identifier	"Souris_USB"
	Driver		"mouse"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"ZAxisMapping"		"4 5"
EndSection

Section "Device"
	Identifier	"ATI_9000-1"
	BusID		"PCI:1:0:0"
	Driver		"radeon"
	Screen 0
EndSection
Section "Device"
	Identifier	"ATI_9000-2"
	BusID		"PCI:1:0:0"
	Driver		"radeon"
	Screen 1
EndSection

Section "Monitor"
	Identifier	"888E_LCD"
	Option		"DPMS"
EndSection
Section "Monitor"
	Identifier	"Proview_LCD"
	Option		"DPMS"
EndSection

Section "Screen"
	Identifier	"888E_Screen"
	Device		"ATI_9000-1"
	Monitor		"888E_LCD"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Virtual 	2560 1024
		Modes		"1280x1024"
	EndSubSection
EndSection
Section "Screen"
	Identifier	"Proview_Screen"
	Device		"ATI_9000-2"
	Monitor		"Proview_LCD"
	DefaultDepth	24
	SubSection "Display"
		Depth		24
		Virtual 	2560 1024
		Modes		"1280x1024"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Multihead_Layout"
	InputDevice	"888E_Keyboard"
	InputDevice	"888E_Touchpad"
	InputDevice	"Souris_USB"
#	Screen 		"Proview_Screen" 0 1
#	Screen 		"Proview_Screen" LeftOf "888E_Screen"
	Screen 		"888E_Screen" 0 0
	Screen 		"888E_Screen" RightOf "Proview_Screen"
EndSection

#Section "DRI"
#	Mode	0666
#EndSection
#
#Section "Extensions"
#	Option "Composite" "Enable"
#EndSection