gérer deux écrans

Bonjour a tous,

j’essaye de brancher un écran tft sur mon portable. sa fonctionne presque
sauf pour la résolution

lorsque je passe l’affichage sur l’écran tft j’ai la même résolution
que sur mon portable (1280x800)

quand j’utilise nvidia-settings pour modifier la résolution du tft (1280x1024)
sa modifie aussi la résolution de l’écran du portable

j’aimerai avoir une résolution de 1280x800 sur le portable et une résolution de 1280x1024 pour le tft

ma carte graphique : nVidia Corporation GeForce 8400M GS
version de xorg.conf : 7.3+18
gnome 2.22.2
le portable : dell vostro 1500 - Debian Lenny

mon xorg


# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
EndSection

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"be"
	Option		"XkbOptions"	"lv3:ralt_switch"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
EndSection

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"		"/dev/psaux"
	Option		"Protocol"		"auto-dev"
	Option		"HorizScrollDelta"	"0"
EndSection

Section "Device"
	Identifier	"nVidia Corporation GeForce 8400M GS"
	Driver		"nvidia"
	BusID		"PCI:1:0:0"
	Option          "EnablePageFlip"    "on"
        Option          "AccelMethod"        "XAA"
        Option          "MigrationHeuristic"   "greedy"
        Option          "AccelDFS"      "true"
        Option          "DynamicClocks"    "on"
        Option          "ColorTiling"       "on"
        Option          "FBTexPercent"       "95"
        Option          "XAANoOffscreenPixmaps" "true"
        Option          "AddARGBGLXVisuals"     "true"
EndSection

Section "Monitor"
	Identifier	"Generic Monitor"
	Option		"DPMS"
	HorizSync	28-64
	VertRefresh	43-60
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"nVidia Corporation GeForce 8400M GS"
	Monitor		"Generic Monitor"
	DefaultDepth	24
	SubSection "Display"
		Modes		"1280x1280"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
	InputDevice	"Synaptics Touchpad"
EndSection

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

a premiere vue ton ecran et en mode clone donc c’est normal il te faut le mettre en bureau etendu