Ca me faisait pareil (y-a longtemps), je me souviens plus trop pourquoi (peut être installation par ati-tvout, ou en tout cas utilisation du mode clone de ati).
Je crois que je m'en était sorti par la config manuelle du xorg.conf, mais comme je ne me souviens pas très bien parce que depuis, je modifie toujours mon xorg.conf à la main.
Si ça peut t'aider, je te donne mon /etc/X11/xorg.conf (c'est pour envoyer sur la tv -> à adapter) :
# Xorg configuration created by pyxf86config
Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "screen_monitor" 0 0
Screen 1 "screen_tv" Below "screen_monitor"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Synaptics" "CorePointer"
EndSection
Section "ServerFlags"
Option "AIGLX" "false"
EndSection
Section "Module"
Load "dri"
Load "glx"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "fr"
Option "XkbVariant" "latin9"
EndSection
Section "InputDevice"
Identifier "Synaptics"
Driver "synaptics"
Option "Device" "/dev/input/mice"
Option "Protocol" "auto-dev"
Option "Emulate3Buttons" "yes"
Option "SHMConfig" "true"
Option "RightEdge" "5500"
Option "BottomEdge" "4500"
Option "MaxTapTime" "180"
Option "HorizScrollDelta" "10"
Option "VertScrollDelta" "100"
EndSection
Section "Monitor"
Identifier "monitor_monitor"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Monitor"
Identifier "monitor_tv"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 30.0 - 50.0
VertRefresh 50.0 - 60.0
EndSection
Section "Device"
Identifier "device_monitor"
Driver "fglrx"
Option "KernelModuleParm" "agplock=0"
Option "UseInternalAGPGART" "no"
Screen 0
Option "VideoOverlay" "on"
EndSection
Section "Device"
# Note: When OpenGL Overlay is enabled, Video Overlay
# will be disabled automatically
Identifier "device_tv"
Driver "fglrx"
Option "VideoOverlay" "on"
Option "NoTV" "no"
Option "DesktopSetup" "0x00000000"
# === disable/enable XAA/DRI ===
Option "no_accel" "no"
Option "no_dri" "no"
# === TV-out Management ===
Option "TVStandard" "PAL-D"
Option "ConnectedMonitor" "TV"
Option "TVOutFormat" "Composite"
Option "TVHSizeAdj" "-10"
Option "TVVSizeAdj" "20"
Option "TVHPosAdj" "15"
Option "TVVPosAdj" "0"
Option "TVHStartAdj" "0"
Option "TVColorAdj" "255"
Option "GammaCorrectionI" "0x06419064"
Option "GammaCorrectionII" "0x06419064"
# === OpenGL specific profiles/settings ===
Option "Capabilities" "0x00000000"
# === Video Overlay for the Xv extension ===
Option "OpenGLOverlay" "off"
# === Center Mode (Laptops only) ===
Option "CenterMode" "off"
# === Pseudo Color Visuals (8-bit visuals) ===
Option "PseudoColorVisuals" "off"
# === QBS Management ===
Option "Stereo" "off"
Option "StereoSyncEnable" "1"
# === FSAA Management ===
Option "FSAAEnable" "no"
Option "FSAAScale" "1"
Option "FSAADisableGamma" "no"
Option "FSAACustomizeMSPos" "no"
Option "FSAAMSPosX0" "0.000000"
Option "FSAAMSPosY0" "0.000000"
Option "FSAAMSPosX1" "0.000000"
Option "FSAAMSPosY1" "0.000000"
Option "FSAAMSPosX2" "0.000000"
Option "FSAAMSPosY2" "0.000000"
Option "FSAAMSPosX3" "0.000000"
Option "FSAAMSPosY3" "0.000000"
Option "FSAAMSPosX4" "0.000000"
Option "FSAAMSPosY4" "0.000000"
Option "FSAAMSPosX5" "0.000000"
Option "FSAAMSPosY5" "0.000000"
# === Misc Options ===
Option "UseFastTLS" "0"
Option "BlockSignalsOnLock" "on"
Option "UseInternalAGPGART" "no"
Option "ForceGenericCPU" "no"
Option "mtrr" "off"
BusID "PCI:1:0:0"
Screen 1
EndSection
Section "Screen"
Identifier "screen_monitor"
Device "device_monitor"
Monitor "monitor_monitor"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "screen_tv"
Device "device_tv"
Monitor "monitor_tv"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "800x600" "Interlace"
EndSubSection
EndSection
Section "DRI"
Group 0
Mode 0666
EndSection
Section "Extensions"
# Option "XVideo" "Disable"
Option "Composite" "Disable"
EndSection
Noter la précence de 2 screens dans le serverlayout, de 2 monitors, 2 devices, 2 screens.
je lance la vidéo par la commande :
xterm -e "DISPLAY=:0.1 && export display && gmplayer -af volnorm -fs -zoom -vo x11 film.avi" &
à adapter pour vlc :
xterm -e "DISPLAY=:0.1 && export display && vlc film.avi" &
Voir ce post ou on en parle (voir plutôt vers la fin) :
http://forums.fedora-fr.org/viewtopic.php?id=16613&words=gmplayer
sinon par google en cherchant "double écran xorg.conf" (ou des trucs approchant), tu devrais avoir des réponses.
Poste ton xorg.conf au cas où quelqu'un pourrait t'aider en le modifiant pour le double écran.
