Bi ecran et xorg.conf

Salut
Voila plusieurs jours que j'essaye de configurer xorg.conf pour avoir un affichage sur mes deux ecrans. Mais je suis paumé entre tout les tutos proposé sur internet, j'ai du mal a mis retrouver.


J'ai deux ecrans plat hyundai B70A en 1280x1024, accompagnée d'un msi RX 700pro avec deux sorties et je suis sous mandriva 2006


voila ce que me retourne la console avec la commande #lspci:
05:00.0 VGA compatible controller: ATI Technologies Inc RV410 [Radeon X700 Pro ( PCIE)]
05:00.1 Display controller: ATI Technologies Inc RV410 [Radeon X700 Pro (PCIE)] Secondary


et Voici mon fichier xorg.conf:
# File generated by XFdrake.

# **********************************************************************
# Refer to the XF86Config man page for details about the format of
# this file.
# **********************************************************************

Section "Files"
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Mandrake 6.0 and later now use a font server independent of
# the X server to render fonts.
FontPath "unix/:-1"
EndSection

Section "ServerFlags"
#DontZap # disable <Crtl><Alt><BS> (server abort)
AllowMouseOpenFail # allows the server to start up even if the mouse does not work
#DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
Option "DefaultServerLayout" "Dual"
EndSection

Section "Module"
Load "dbe" # Double-Buffering Extension
Load "v4l" # Video for Linux
Load "extmod"
Load "type1"
Load "freetype"
Load "glx" # 3D layer
EndSection

Section "InputDevice"
Identifier "Keyboard1"
Driver "keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "fr"
Option "XkbOptions" "compose:rwin"
EndSection

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "ExplorerPS/2"
Option "Device" "/dev/mouse"
Option "ZAxisMapping" "6 7"
EndSection

Section "Monitor"
Identifier "monitor1"
VendorName "Generic"
ModelName "Flat Panel 1280x1024"
HorizSync 31.5-67
VertRefresh 50-75

# Monitor preferred modeline (60.0 Hz vsync, 64.0 kHz hsync, ratio 5/4)
ModeLine "1280x1024" 108 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

# TV fullscreen mode or DVD fullscreen output.
# 768x576 @ 79 Hz, 50 kHz hsync
ModeLine "768x576" 50.00 768 832 846 1000 576 590 595 630

# 768x576 @ 100 Hz, 61.6 kHz hsync
ModeLine "768x576" 63.07 768 800 960 1024 576 578 590 616
EndSection

Section "Monitor"
Identifier "monitor2"
VendorName "Generic"
ModelName "Flat Panel 1280x1024"
HorizSync 31.5-67
VertRefresh 50-75

# TV fullscreen mode or DVD fullscreen output.
# 768x576 @ 79 Hz, 50 kHz hsync
ModeLine "768x576" 50.00 768 832 846 1000 576 590 595 630

# 768x576 @ 100 Hz, 61.6 kHz hsync
ModeLine "768x576" 63.07 768 800 960 1024 576 578 590 616
EndSection

Section "Device"
Identifier "device1"
Driver "radeon"
Screen 0
Option "DPMS"
EndSection

Section "Device"
Identifier "device2"
VendorName "ATI Technologies Inc"
BoardName "ATI Radeon (fglrx)"
Driver "ati"
Screen 0
BusID "PCI:5:0:1"
Option "DPMS"
EndSection

Section "Screen"
Identifier "screen1"
Device "device1"
Monitor "monitor1"
DefaultColorDepth 24

Subsection "Display"
Depth 8
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 15
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 16
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 24
Virtual 1280 1024
EndSubsection
EndSection

Section "Screen"
Identifier "screen2"
Device "device2"
Monitor "monitor2"
DefaultColorDepth 24

Subsection "Display"
Depth 8
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 15
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 16
Virtual 1280 1024
EndSubsection

Subsection "Display"
Depth 24
Virtual 1280 1024
EndSubsection
EndSection

Section "ServerLayout"
Identifier "dual"
InputDevice "Keyboard1" "CoreKeyboard"
InputDevice "Mouse1" "CorePointer"
Screen "screen1"
Screen "screen2" RightOf "screen1"
Option "Xinerama"
EndSection



Voila, si vous avez des suggestions elles sont les bienvenues
Merci