Debian : Xserver et le net ne répondent plus

Bonjour,

Je rencontre actuellement des problèmes sur une Debian AMD64 Testing, noyaux 2.6.32-5, suite a différentes mise à jour.
En faite, quand je tente de démarrer mon ordinateur, je fais face à un écran d'erreur de Xserver et je n'ai pas accès à GDM. J'avais déjà eu un problème similaire par le passé et quelqu'un m'avait donné une solution efficace:
https://www.debian-fr.org/t/le-server-x-ne-demarre-plus/22275
Seulement cette fois, la solution ne marche pas, et je crois que le Xorg.0.log est légèrement différent:

X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.32-5-amd64 x86_64 Debian
Current Operating System: Linux MAYHEM 2.6.32-5-amd64 #1 SMP Thu Nov 25 18:02:11 UTC 2010 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-5-amd64 root=UUID=22e9e312-4b08-4171-b39d-f534b9e6349d ro quiet
Build Date: 11 November 2010  11:44:20PM
xorg-server 2:1.7.7-9 (Julien Cristau <jcristau@debian.org>) 
Current version of pixman: 0.16.4
	Before reporting problems, check https://www.x.org/wiki/
	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: Tue Nov 30 11:05:57 2010
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
Parse error on line 13 of section Files in file /etc/X11/xorg.conf
	Ignoring obsolete keyword "RgbPath".
(==) ServerLayout "Layout0"
(**) |-->Screen "Screen0" (0)
(**) |   |-->Monitor "Monitor0"
(**) |   |-->Device "Device0"
(**) |-->Input Device "Keyboard0"
(**) |-->Input Device "Mouse0"
(==) Automatically adding devices
(==) Automatically enabling devices
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
	Entry deleted from font path.
(WW) 'fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/100dpi/".
	Entry deleted from font path.
	(Run 'mkfontdir' on "/usr/share/fonts/X11/100dpi/").
(WW) 'fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/75dpi/".
	Entry deleted from font path.
	(Run 'mkfontdir' on "/usr/share/fonts/X11/75dpi/").
(WW) 'fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/100dpi".
	Entry deleted from font path.
	(Run 'mkfontdir' on "/usr/share/fonts/X11/100dpi").
(WW) 'fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/75dpi".
	Entry deleted from font path.
	(Run 'mkfontdir' on "/usr/share/fonts/X11/75dpi").
(==) FontPath set to:
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/Type1,
	/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 Keyboard0
(WW) Disabling Mouse0
(II) Loader magic: 0x7c8a40
(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:*(0:4:0:0) 10de:0421:0000:0000 nVidia Corporation G86 [GeForce 8500 GT] rev 161, Mem @ 0xfd000000/16777216, 0xd0000000/268435456, 0xfa000000/33554432, I/O @ 0x0000ec00/128, BIOS @ 0x????????/131072
(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 by default.
(II) "dri" will be loaded by default.
(II) "dri2" will be loaded by default.
(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: "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: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="NVIDIA Corporation"
	compiled for 4.0.2, module version = 1.0.0
	Module class: X.Org Server Extension
(II) NVIDIA GLX Module  195.36.31  Thu Jun  3 08:59:25 PDT 2010
(II) Loading extension GLX
(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: "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: "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: "nvidia"
(II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
(II) Module nvidia: vendor="NVIDIA Corporation"
	compiled for 4.0.2, module version = 1.0.0
	Module class: X.Org Video Driver
(II) NVIDIA dlloader X Driver  195.36.31  Thu Jun  3 08:27:29 PDT 2010
(II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
(II) Primary Device is: PCI 04@00:00:0
(II) Loading sub module "fb"
(II) LoadModule: "fb"
(II) Loading /usr/lib/xorg/modules/libfb.so
(II) Module fb: vendor="X.Org Foundation"
	compiled for 1.7.7, module version = 1.0.0
	ABI class: X.Org ANSI C Emulation, version 0.4
(II) Loading sub module "wfb"
(II) LoadModule: "wfb"
(II) Loading /usr/lib/xorg/modules/libwfb.so
(II) Module wfb: vendor="X.Org Foundation"
	compiled for 1.7.7, module version = 1.0.0
	ABI class: X.Org ANSI C Emulation, version 0.4
(II) Loading sub module "ramdac"
(II) LoadModule: "ramdac"
(II) Module "ramdac" already built-in
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) Nov 30 11:05:57 NVIDIA(0): Enabling RENDER acceleration
(II) Nov 30 11:05:57 NVIDIA(0): Support for GLX with the Damage and Composite X extensions is
(II) Nov 30 11:05:57 NVIDIA(0):     enabled.
(EE) Nov 30 11:05:57 NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
(EE) Nov 30 11:05:57 NVIDIA(0):     system's kernel log for additional error messages and
(EE) Nov 30 11:05:57 NVIDIA(0):     consult the NVIDIA README for details.
(EE) NVIDIA(0):  *** Aborting ***
(II) UnloadModule: "nvidia"
(II) UnloadModule: "wfb"
(II) UnloadModule: "fb"
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

Please consult the The X.Org Foundation support 
	 at https://www.x.org/wiki/
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

D'autre part, il semble que je n'ai plus accès à internet:
quand je fais des commandes comme « apt-get update » ou « apt-get install paquetX », il m'indique qu'il n'arrive pas à « résoudre » les adresses des dépôt. Pourtant, au niveau matériel, tout vas bien, puisque j'arrive à vous écrire ceci via un live CD d'Ubuntu, sur le même ordinateur...

P.S.: Je ne pense pas que ce soit en rapport mais, depuis quelques semaines, j'ai aussi des problèmes de son, mais j'en reparlerai dans un autre billet quand j'aurai de nouveau accès à GDM.