Bonjour =)
Je suis actuellement sur une Debian Etch et j’ai quelques problèmes sur ma configuration graphique.
Ma carte graphique est une ATI Radeon Mobility 7500 que j’utilise avec le driver libre “ati”
Après l’installation, l’accélération graphique était activée et je n’ai eu aucun problème venant de là. Mais j’ai ce matin configuré le dual-screen et depuis, impossible d’avoir une accélération graphique. Aucune doc ou page de man que j’ai pu lire n’a pu me renseigner sur l’origine du problème 
Voici mon xorg.conf :
[code]# /etc/X11/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 /etc/X11/xorg.conf manual page.
(Type “man /etc/X11/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"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/X11R6/lib/X11/fonts/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/X11R6/lib/X11/fonts/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath “/usr/X11R6/lib/X11/fonts/75dpi”
# path to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection
Section "Module"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "vbe"
EndSection
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option “XkbRules” "xorg"
Option “XkbModel” "pc105"
Option “XkbLayout” "fr"
Option “XkbVariant” "latin9"
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 "Device0"
Driver "ati"
Screen 0
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Device1"
Driver "ati"
Screen 1
BusID "PCI:1:0:0"
EndSection
Section "Monitor"
Identifier “Monitor0”
#HorizSync 30-70
#VertRefresh 50-60
Option "DPMS"
EndSection
Section "Monitor"
Identifier “Monitor1”
#HorizSync 30-50
#VertRefresh 50-150
Option "DPMS"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Depth 16
Modes “1024x768” "800x600"
EndSubSection
SubSection "Display"
Depth 24
Modes “1024x768” "800x600"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "Basic Layout"
Screen 0 "Screen0"
Screen 1 “Screen1” RightOf "Screen0"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "Synaptics Touchpad"
EndSection
Section "DRI"
Mode 0666
EndSection
[/code]
Et le résultat de la commande “lspci | grep VGA”
$ lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
Donc voilà si quelqu’un pouvait me donner un coup de main ce serait sympa ^^
Merci d’avance et bonne fin de journée à vous 