Hermes le Messager Breton Quiétiste | Voilà, tout est dans le titre.
   Lorsque ma carte est configurée uniquement pour l'écran de mon LAPTOP, aucun problème, la 3D marche bien.
   Le xorg.conf est donc comme ceci :
  
  
 # /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/X11/fonts/misc"
  FontPath	"/usr/share/X11/fonts/cyrillic"
  FontPath	"/usr/share/X11/fonts/100dpi/:unscaled"
  FontPath	"/usr/share/X11/fonts/75dpi/:unscaled"
  FontPath	"/usr/share/X11/fonts/Type1"
  FontPath	"/usr/share/X11/fonts/100dpi"
  FontPath	"/usr/share/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	"type1"
  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"  "ExplorerPS/2"
  Option  "ZAxisMapping"  "4 5"
  Option  "Emulate3Buttons"	"true"
 EndSection
   Section "InputDevice"
   Driver        "wacom"
   Identifier    "stylus"
   Option        "Device"        "/dev/wacom"          # Change to                                                         # /dev/input/event
                                                       # for USB
   Option        "Type"          "stylus"
   Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "InputDevice"
   Driver        "wacom"
   Identifier    "eraser"
   Option        "Device"        "/dev/wacom"          # Change to                                                         # /dev/input/event
                                                       # for USB
   Option        "Type"          "eraser"
   Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "InputDevice"
   Driver        "wacom"
   Identifier    "cursor"
   Option        "Device"        "/dev/wacom"          # Change to                                                         # /dev/input/event
                                                       # for USB
   Option        "Type"          "cursor"
   Option        "ForceDevice"   "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "Device"
  Identifier	"ATI Technologies, Inc. RV350 NP [Mobility Radeon 9600/9700 M10/M11]"
  Driver  "fglrx"
  BusID  "PCI:1:0:0"
 EndSection
   Section "Monitor"
  Identifier	"SyncMaster"
  Option  "DPMS"
 EndSection
   Section "Screen"
  Identifier	"Default Screen"
  Device  "ATI Technologies, Inc. RV350 NP [Mobility Radeon 9600/9700 M10/M11]"
  Monitor  "SyncMaster"
  DefaultDepth	24
  SubSection "Display"
  	Depth  1
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
  SubSection "Display"
  	Depth  4
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
  SubSection "Display"
  	Depth  8
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
  SubSection "Display"
  	Depth  15
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
  SubSection "Display"
  	Depth  16
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
  SubSection "Display"
  	Depth  24
  	Modes  "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
  EndSubSection
 EndSection
   Section "ServerLayout"
  Identifier	"Default Layout"
  Screen  "Default Screen"
  InputDevice	"Generic Keyboard"
  InputDevice	"Configured Mouse"
  InputDevice     "stylus" "SendCoreEvents"
  InputDevice     "cursor" "SendCoreEvents"
  InputDevice     "eraser" "SendCoreEvents"
 EndSection
   Section "DRI"
  Mode	0666
 EndSection
   |  
 
     Par contre, lorsque je configure le bi-ecran (qui marche d'ailleurs parfaitement), je perd la 3d avec un message de ce type avec glxinfo :
  
  
 hermes@station-hermes-portable:~$ glxinfo name of display: :0.0
 Xlib:  extension "XFree86-DRI" missing on display ":0.0".
 display: :0  screen: 0
 direct rendering: No
 server glx vendor string: SGI
 server glx version string: 1.2
 server glx extensions:
     GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
     GLX_EXT_import_context, GLX_OML_swap_method, GLX_SGI_make_current_read,
     GLX_SGIS_multisample, GLX_SGIX_hyperpipe, GLX_SGIX_swap_barrier,
     GLX_SGIX_fbconfig
 client glx vendor string: ATI
 client glx version string: 1.3
 client glx extensions:
     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
     GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_ATI_pixel_format_float,
     GLX_ATI_render_texture
 GLX version: 1.2
 GLX extensions:
     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_import_context,
     GLX_ARB_multisample
 OpenGL vendor string: Mesa project: www.mesa3d.org
 OpenGL renderer string: Mesa GLX Indirect
 OpenGL version string: 1.2 (1.5 Mesa 6.4.1)
 OpenGL extensions:
     GL_ARB_imaging, GL_ARB_multitexture, GL_ARB_texture_border_clamp,
     GL_ARB_texture_cube_map, GL_ARB_texture_env_add,
     GL_ARB_texture_env_combine, GL_ARB_texture_env_dot3,
     GL_ARB_transpose_matrix, GL_EXT_abgr, GL_EXT_blend_color,
     GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_texture_env_add,
     GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3,
     GL_EXT_texture_lod_bias
 glu version: 1.3
 glu extensions:
     GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess
      visual  x  bf lv rg d st colorbuffer ax dp st accumbuffer  ms  cav
  id dep cl sp sz l  ci b ro  r  g  b  a bf th cl  r  g  b  a ns b eat
 ----------------------------------------------------------------------
 0x23 24 tc  0 24  0 r  y  .  8  8  8  0  0 16  0  0  0  0  0  1 0 None
 0x24 24 tc  0 24  0 r  y  .  8  8  8  0  0 16  8 16 16 16  0  1 0 None
 0x25 24 tc  0 32  0 r  y  .  8  8  8  8  0 16  8 16 16 16 16  1 0 None
 0x26 24 tc  0 32  0 r  .  .  8  8  8  8  0 16  8 16 16 16 16  1 0 None
 0x27 24 dc  0 24  0 r  y  .  8  8  8  0  0 16  0  0  0  0  0  1 0 None
 0x28 24 dc  0 24  0 r  y  .  8  8  8  0  0 16  8 16 16 16  0  1 0 None
 0x29 24 dc  0 32  0 r  y  .  8  8  8  8  0 16  8 16 16 16 16  1 0 None
 0x2a 24 dc  0 32  0 r  .  .  8  8  8  8  0 16  8 16 16 16 16  1 0 None
   |  
 
     le xorg.conf est comme ceci :
  
  
   # /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 "ServerFlags"  
         Option "Xinerama" "true"   EndSection
   Section "ServerLayout"
  Identifier     "Default Layout"
  Screen      0  "aticonfig-Screen[0]" 0 0
  Screen         "aticonfig-Screen[1]" LeftOf "aticonfig-Screen[0]"
  InputDevice    "Generic Keyboard"
  InputDevice    "Configured Mouse"
  InputDevice    "stylus" "SendCoreEvents"
  InputDevice    "cursor" "SendCoreEvents"
  InputDevice    "eraser" "SendCoreEvents"
  Option         "Xinerama" "On"
 EndSection
   Section "Files"
    # path to defoma fonts
  FontPath     "/usr/share/X11/fonts/misc"
  FontPath     "/usr/share/X11/fonts/cyrillic"
  FontPath     "/usr/share/X11/fonts/100dpi/:unscaled"
  FontPath     "/usr/share/X11/fonts/75dpi/:unscaled"
  FontPath     "/usr/share/X11/fonts/Type1"
  FontPath     "/usr/share/X11/fonts/100dpi"
  FontPath     "/usr/share/X11/fonts/75dpi"
  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  "type1"
  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" "ExplorerPS/2"
  Option     "ZAxisMapping" "4 5"
  Option     "Emulate3Buttons" "true"
 EndSection
   Section "InputDevice"
                                                         # /dev/input/event
                                                       # for USB
  Identifier  "stylus"
  Driver      "wacom"
  Option     "Device" "/dev/wacom"          # Change to    Option     "Type" "stylus"
  Option     "ForceDevice" "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "InputDevice"
                                                         # /dev/input/event
                                                       # for USB
  Identifier  "eraser"
  Driver      "wacom"
  Option     "Device" "/dev/wacom"          # Change to    Option     "Type" "eraser"
  Option     "ForceDevice" "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "InputDevice"
                                                         # /dev/input/event
                                                       # for USB
  Identifier  "cursor"
  Driver      "wacom"
  Option     "Device" "/dev/wacom"          # Change to    Option     "Type" "cursor"
  Option     "ForceDevice" "ISDV4"               # Tablet PC ONLY
 EndSection
   Section "Monitor"
  Identifier   "Generic Monitor"
  Option     "DPMS"
 EndSection
   Section "Monitor"
  Identifier   "aticonfig-Monitor[0]"
  Option     "VendorName" "ATI Proprietary Driver"
  Option     "ModelName" "Generic Autodetecting Monitor"
  Option     "DPMS" "true"
 EndSection
   Section "Monitor"
  Identifier   "aticonfig-Monitor[1]"
  Option     "VendorName" "ATI Proprietary Driver"
  Option     "ModelName" "Generic Autodetecting Monitor"
  Option     "DPMS" "true"
 EndSection
   Section "Device"
  Identifier  "ATI Technologies, Inc. RV350 NP [Mobility Radeon 9600/9700 M10/M11]"
  Driver      "ati"
  BusID       "PCI:1:0:0"
 EndSection
   Section "Device"
  Identifier  "aticonfig-Device[0]"
  Driver      "fglrx"
  Option     "VideoOverlay" "on"
  Option     "OpenGLOverlay" "off"
  BusID       "PCI:1:0:0"
 EndSection
   Section "Device"
  Identifier  "aticonfig-Device[1]"
  Driver      "fglrx"
  BusID       "PCI:1:0:0"
  Screen      1
 EndSection
   Section "Screen"
  Identifier "Default Screen"
  Device     "ATI Technologies, Inc. RV350 NP [Mobility Radeon 9600/9700 M10/M11]"
  Monitor    "Generic Monitor"
  DefaultDepth     24
  SubSection "Display"
  	Depth     1
  	Modes    "1280x1024"
  EndSubSection
  SubSection "Display"
  	Depth     4
  	Modes    "1280x1024"
  EndSubSection
  SubSection "Display"
  	Depth     8
  	Modes    "1280x1024"
  EndSubSection
  SubSection "Display"
  	Depth     15
  	Modes    "1280x1024"
  EndSubSection
  SubSection "Display"
  	Depth     16
  	Modes    "1280x1024"
  EndSubSection
  SubSection "Display"
  	Depth     24
  	Modes    "1280x1024"
  EndSubSection
 EndSection
   Section "Screen"
  Identifier "aticonfig-Screen[0]"
  Device     "aticonfig-Device[0]"
  Monitor    "aticonfig-Monitor[0]"
  DefaultDepth     24
  SubSection "Display"
  	Viewport   0 0
  	Depth     24
  EndSubSection
 EndSection
   Section "Screen"
  Identifier "aticonfig-Screen[1]"
  Device     "aticonfig-Device[1]"
  Monitor    "aticonfig-Monitor[1]"
  DefaultDepth     24
  SubSection "Display"
  	Viewport   0 0
  	Depth     24
  EndSubSection
 EndSection
   Section "DRI"
  Mode         0666
 EndSection
  
   |  
 
   Toute piste/aide serait la bienvenue (c'est quand même bcp plus fluide avec l'accélération 3d, même si sans, c'est tout à fait acceptable, mais bon...)    |