Nouvelle étape : J’ai désinstaller proprement xorg et Xfce puis, j’ai réinstaller xorg et gnome
[code]# apt-get install xserver-xorg-video-intel
apt-get install gnome[/code]
Je tente de lancer le gestionnaire avec startx et la, j’ai un message d’erreur.
voici le contenu du fichier /var/log/Xorg.0.log
[code]
X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.32.29-dsa-ia32 i686 Debian
Current Operating System: Linux manora 2.6.32-5-686 #1 SMP Tue Mar 8 21:36:00 UTC 2011 i686
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-686 root=UUID=1f7d9b7e-21da-47c7-93cc-d4a9ffd68782 ro quiet
Build Date: 19 February 2011 02:37:36PM
xorg-server 2:1.7.7-13 (Cyril Brulebois kibi@debian.org)
Current version of pixman: 0.16.4
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (–) probed, () from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: “/var/log/Xorg.0.log”, Time: Sun Apr 10 00:20:16 2011
(==) Using config file: “/etc/X11/xorg.conf”
(==) Using system config directory “/usr/share/X11/xorg.conf.d”
(==) ServerLayout “X.org Configured”
() |–>Screen “Screen0” (0)
() | |–>Monitor “Monitor0”
() | |–>Device “Card0”
() |–>Screen “Screen1” (1)
() | |–>Monitor “Monitor1”
() | |–>Device “Card1”
() |–>Input Device “Mouse0”
() |–>Input Device “Keyboard0”
(==) Automatically adding devices
(==) Automatically enabling devices
(WW) The directory “/usr/share/fonts/X11/cyrillic” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/100dpi/” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/75dpi/” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/Type1” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/100dpi” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/75dpi” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/cyrillic” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/100dpi/” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/75dpi/” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/Type1” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/100dpi” does not exist.
Entry deleted from font path.
(WW) The directory “/usr/share/fonts/X11/75dpi” does not exist.
Entry deleted from font path.
() FontPath set to:
/usr/share/fonts/X11/misc,
/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,
built-ins,
/usr/share/fonts/X11/misc,
/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,
built-ins
(**) ModulePath set to “/usr/lib/xorg/modules”
(WW) AllowEmptyInput is on, devices using drivers ‘kbd’, ‘mouse’ or ‘vmmouse’ will be disabled.
(WW) Disabling Mouse0
(WW) Disabling Keyboard0
(II) Loader magic: 0x81ecca0
(II) Module ABI versions:
X.Org ANSI C Emulation: 0.4
X.Org Video Driver: 6.0
X.Org XInput driver : 7.0
X.Org Server Extension : 2.0
(–) using VT number 7
(–) PCI:*(0:0:2:0) 8086:3577:1028:0122 Intel Corporation 82830 CGC [Chipset Graphics Controller] rev 4, Mem @ 0xe8000000/134217728, 0xe0000000/524288
(–) PCI: (0:0:2:1) 8086:3577:1028:0122 Intel Corporation 82830 CGC [Chipset Graphics Controller] rev 0, Mem @ 0xf0000000/134217728, 0xe0080000/524288
(II) Open ACPI successful (/var/run/acpid.socket)
(II) “extmod” will be loaded. This was enabled by default and also specified in the config file.
(II) “dbe” will be loaded. This was enabled by default and also specified in the config file.
(II) “glx” will be loaded. This was enabled by default and also specified in the config file.
(II) “record” will be loaded. This was enabled by default and also specified in the config file.
(II) “dri” will be loaded. This was enabled by default and also specified in the config file.
(II) “dri2” will be loaded. This was enabled by default and also specified in the config file.
(II) LoadModule: “record”
(II) Loading /usr/lib/xorg/modules/extensions/librecord.so
(II) Module record: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.13.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension RECORD
(II) LoadModule: “dri2”
(II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
(II) Module dri2: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.1.0
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension DRI2
(II) LoadModule: “dbe”
(II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
(II) Module dbe: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension DOUBLE-BUFFER
(II) LoadModule: “dri”
(II) Loading /usr/lib/xorg/modules/extensions/libdri.so
(II) Module dri: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension XFree86-DRI
(II) LoadModule: “glx”
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(==) AIGLX enabled
(II) Loading extension GLX
(II) LoadModule: “extmod”
(II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
(II) Module extmod: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 2.0
(II) Loading extension SELinux
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XFree86-VidModeExtension
(II) Loading extension XFree86-DGA
(II) Loading extension DPMS
(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation
(II) Loading extension X-Resource
(II) LoadModule: “intel”
(II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
(II) Module intel: vendor=“X.Org Foundation”
compiled for 1.7.7, module version = 2.13.0
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 6.0
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G,
E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale,
Sandybridge, Sandybridge, Sandybridge, Sandybridge, Sandybridge,
Sandybridge, Sandybridge
(II) Primary Device is: PCI 00@00:02:0
(EE) No devices detected.
Fatal server error:
no screens found
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at “/var/log/Xorg.0.log” for additional information.[/code]
Là j’ai une petite incompréhension ; comment Xfce a pu faire fonctionner l’écran (même mal) alors que gnome ne semble pas le connaitre?! 
Comment puis-je régler ce problème sans avoir ceux de Xfce ?!
Je tente de remplir un fichier xorg.conf placé dans /etc/X11/xorg.conf mais, je ne sais pas vraiment comment le remplir correctement et si cela solutionnera mon problème?! 
En voici le contenu :
[code]# /etc/X11/xorg.conf (xorg X Window System server configuration file)
This file was created by the command “X -configure” or “Xorg -configure”
then copy the generated file /root/xorg.conf.new into /etc/X11/xorg.conf.new
Edit this file with caution, make a copy of xorg.conf.new.
If you seek help, refer ton /etc/X11/xorg.conf manual page.
Type “man /etc/X11/xorg.conf” at the shell prompt.)
Last edit time : April, Saturday 9th 2011 - 23:40 by C.O.B.
Version Alpha 0.0.0.0
Section “ServerLayout”
Identifier “X.org Configured”
Screen 0 “Screen0” 0 0
Screen 1 “Screen1” RightOf “Screen0”
InputDevice “Mouse0” “CorePointer”
InputDevice “Keyboard0” “CoreKeyboard”
EndSection
Section “Files”
ModulePath “/usr/lib/xorg/modules”
FontPath “/usr/share/fonts/X11/misc”
FontPath “/usr/share/fonts/X11/cyrillic”
FontPath “/usr/share/fonts/X11/100dpi/:unscaled”
FontPath “/usr/share/fonts/X11/75dpi/:unscaled”
FontPath “/usr/share/fonts/X11/Type1”
FontPath “/usr/share/fonts/X11/100dpi”
FontPath “/usr/share/fonts/X11/75dpi”
FontPath “/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType”
FontPath “built-ins”
EndSection
Section “Module”
Load “record”
Load “dri2”
Load “dbe”
Load “dri” ## direct rendering
Load “glx” ## client GLX pour OpenGL
Load “extmod”
EndSection
Section “InputDevice”
Identifier “Keyboard0”
Driver “kbd”
EndSection
Section “InputDevice”
Identifier “Mouse0”
Driver “mouse”
Option “Protocol” “auto”
Option “Device” “/dev/input/mice”
Option “ZAxisMapping” “4 5 6 7”
EndSection
Section “Monitor”
Identifier “Monitor0”
VendorName “Monitor Vendor”
ModelName “Monitor Model”
EndSection
Section “Monitor”
Identifier “Monitor1”
VendorName “Monitor Vendor”
ModelName “Monitor Model”
EndSection
Section “Device”
### Available Driver options are:-
### Values: : integer, : float, : “True”/“False”,
### : “String”, : " Hz/kHz/MHz"
### [arg]: arg optional
#Option “AccelMethod” # []
#Option “DRI” # []
#Option “ColorKey” #
#Option “VideoKey” #
#Option “FallbackDebug” # []
#Option “Tiling” # []
#Option “Shadow” # []
#Option “SwapbuffersWait” # []
#Option “XvMC” # []
#Option “XvPreferOverlay” # []
#Option “DebugFlushBatches” # []
#Option “DebugFlushCaches” # []
#Option “DebugWait” # []
Identifier “Card0”
Driver “intel”
VendorName “Intel Corporation”
BoardName “82830 CGC [Chipset Graphics Controller]”
BusID “PCI:0:2:0”
EndSection
Section “Device”
### Available Driver options are:-
### Values: : integer, : float, : “True”/“False”,
### : “String”, : " Hz/kHz/MHz"
### [arg]: arg optional
#Option “AccelMethod” # []
#Option “DRI” # []
#Option “ColorKey” #
#Option “VideoKey” #
#Option “FallbackDebug” # []
#Option “Tiling” # []
#Option “Shadow” # []
#Option “SwapbuffersWait” # []
#Option “XvMC” # []
#Option “XvPreferOverlay” # []
#Option “DebugFlushBatches” # []
#Option “DebugFlushCaches” # []
#Option “DebugWait” # []
Identifier “Card1”
Driver “intel”
VendorName “Intel Corporation”
BoardName “82830 CGC [Chipset Graphics Controller]”
BusID “PCI:0:2:1”
EndSection
Section “Screen”
Identifier “Screen0”
Device “Card0”
Monitor “Monitor0”
SubSection “Display”
Viewport 0 0
Depth 1
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 4
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 8
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 15
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 16
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section “Screen”
Identifier “Screen1”
Device “Card1”
Monitor “Monitor1”
SubSection “Display”
Viewport 0 0
Depth 1
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 4
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 8
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 15
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 16
EndSubSection
SubSection “Display”
Viewport 0 0
Depth 24
EndSubSection
EndSection[/code]
