Comme me là gentillement dit FIL ROUGE dans un autre topic :

Ouvre un topic spécifique à ton problème. Essai d'être un maximum complet dans la description du problème. Par ailleurs je te conseil de te référer "au démarrage init3", et les fichiers /var/log/messages et /var/log/Xorg.0.log et /var/log/Xorg.0.log.old.

Munis de ces premières informations tu ouvres le topic, on pourra j'espère apporter des solutions.

Alors voici ce que j'ai trouvé : le fichier Xorg.log en premier
[    77.415] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    77.415] X Protocol Version 11, Revision 0
[    77.416] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    77.416] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    77.416] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rhgb quiet SYSFONT=latarcyrheb-sun16 LANG=fr_FR.UTF-8 KEYTABLE=fr-latin9
[    77.416] Build Date: 30 May 2011  12:42:58AM
[    77.416] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    77.416] Current version of pixman: 0.20.2
[    77.416]     Before reporting problems, check [url]http://wiki.x.org[/url]
    to make sure that you have the latest version.
[    77.416] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    77.417] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Jul 14 15:06:17 2011
[    77.424] (==) Using config file: "/etc/X11/xorg.conf"
[    77.424] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    77.424] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    77.425] (==) No Layout section.  Using the first Screen section.
[    77.425] (==) No screen section available. Using defaults.
[    77.425] (**) |-->Screen "Default Screen Section" (0)
[    77.425] (**) |   |-->Monitor "<default monitor>"
[    77.426] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    77.426] (**) |   |-->Device "Videocard0"
[    77.426] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    77.426] (**) Option "AIGLX" "on"
[    77.426] (==) Automatically adding devices
[    77.426] (==) Automatically enabling devices
[    77.426] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    77.426] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    77.426] (**) Extension "Composite" is enabled
[    77.426] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    77.427] (II) Loader magic: 0x7d37e0
[    77.427] (II) Module ABI versions:
[    77.427]     X.Org ANSI C Emulation: 0.4
[    77.427]     X.Org Video Driver: 10.0
[    77.427]     X.Org XInput driver : 12.2
[    77.427]     X.Org Server Extension : 5.0
[    77.433] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    77.433] (II) LoadModule: "extmod"
[    77.441] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    77.443] (II) Module extmod: vendor="X.Org Foundation"
[    77.443]     compiled for 1.10.2, module version = 1.0.0
[    77.443]     Module class: X.Org Server Extension
[    77.443]     ABI class: X.Org Server Extension, version 5.0
[    77.443] (II) Loading extension SELinux
[    77.443] (II) Loading extension MIT-SCREEN-SAVER
[    77.443] (II) Loading extension XFree86-VidModeExtension
[    77.443] (II) Loading extension XFree86-DGA
[    77.443] (II) Loading extension DPMS
[    77.443] (II) Loading extension XVideo
[    77.443] (II) Loading extension XVideo-MotionCompensation
[    77.443] (II) Loading extension X-Resource
[    77.443] (II) LoadModule: "dbe"
[    77.446] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    77.446] (II) Module dbe: vendor="X.Org Foundation"
[    77.446]     compiled for 1.10.2, module version = 1.0.0
[    77.447]     Module class: X.Org Server Extension
[    77.447]     ABI class: X.Org Server Extension, version 5.0
[    77.447] (II) Loading extension DOUBLE-BUFFER
[    77.447] (II) LoadModule: "glx"
[    77.452] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    77.523] (II) Module glx: vendor="NVIDIA Corporation"
[    77.523]     compiled for 4.0.2, module version = 1.0.0
[    77.523]     Module class: X.Org Server Extension
[    77.523] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    77.523] (II) Loading extension GLX
[    77.523] (II) LoadModule: "record"
[    77.524] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    77.524] (II) Module record: vendor="X.Org Foundation"
[    77.524]     compiled for 1.10.2, module version = 1.13.0
[    77.524]     Module class: X.Org Server Extension
[    77.524]     ABI class: X.Org Server Extension, version 5.0
[    77.524] (II) Loading extension RECORD
[    77.524] (II) LoadModule: "dri"
[    77.525] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    77.526] (II) Module dri: vendor="X.Org Foundation"
[    77.526]     compiled for 1.10.2, module version = 1.0.0
[    77.526]     ABI class: X.Org Server Extension, version 5.0
[    77.526] (II) Loading extension XFree86-DRI
[    77.526] (II) LoadModule: "dri2"
[    77.528] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    77.528] (II) Module dri2: vendor="X.Org Foundation"
[    77.528]     compiled for 1.10.2, module version = 1.2.0
[    77.528]     ABI class: X.Org Server Extension, version 5.0
[    77.528] (II) Loading extension DRI2
[    77.528] (II) LoadModule: "nvidia"
[    77.529] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    77.530] (II) Module nvidia: vendor="NVIDIA Corporation"
[    77.530]     compiled for 4.0.2, module version = 1.0.0
[    77.530]     Module class: X.Org Video Driver
[    77.530] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    77.530] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    77.530] (--) using VT number 7

[    77.541] (II) Loading sub module "fb"
[    77.542] (II) LoadModule: "fb"
[    77.543] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    77.543] (II) Module fb: vendor="X.Org Foundation"
[    77.543]     compiled for 1.10.2, module version = 1.0.0
[    77.543]     ABI class: X.Org ANSI C Emulation, version 0.4
[    77.543] (II) Loading sub module "wfb"
[    77.543] (II) LoadModule: "wfb"
[    77.544] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    77.545] (II) Module wfb: vendor="X.Org Foundation"
[    77.545]     compiled for 1.10.2, module version = 1.0.0
[    77.545]     ABI class: X.Org ANSI C Emulation, version 0.4
[    77.545] (II) Loading sub module "ramdac"
[    77.545] (II) LoadModule: "ramdac"
[    77.545] (II) Module "ramdac" already built-in
[    77.545] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    77.545] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    77.545] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    77.545] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    77.545] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    77.546] (==) NVIDIA(0): RGB weight 888
[    77.546] (==) NVIDIA(0): Default visual is TrueColor
[    77.546] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    77.546] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    77.547] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    77.547] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    77.547] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    77.547] (EE) NVIDIA(0):  *** Aborting ***
[    77.547] (II) UnloadModule: "nvidia"
[    77.547] (II) Unloading nvidia
[    77.547] (II) UnloadModule: "wfb"
[    77.547] (II) Unloading wfb
[    77.547] (II) UnloadModule: "fb"
[    77.547] (II) Unloading fb
[    77.547] (EE) Screen(s) found, but none have a usable configuration.
[    77.547] 
Fatal server error:
[    77.547] no screens found
[    77.547] 
Please consult the Fedora Project support 
     at [url]http://wiki.x.org[/url]
 for help. 
[    77.547] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    77.547]


Et le Xorg.log.old à la suite : 
[    75.882] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    75.883] X Protocol Version 11, Revision 0
[    75.883] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    75.883] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    75.884] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rhgb quiet SYSFONT=latarcyrheb-sun16 LANG=fr_FR.UTF-8 KEYTABLE=fr-latin9
[    75.884] Build Date: 30 May 2011  12:42:58AM
[    75.884] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    75.884] Current version of pixman: 0.20.2
[    75.884]     Before reporting problems, check [url]http://wiki.x.org[/url]
    to make sure that you have the latest version.
[    75.885] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    75.885] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Jul 14 15:31:32 2011
[    75.886] (==) Using config file: "/etc/X11/xorg.conf"
[    75.887] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    75.887] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    75.887] (==) No Layout section.  Using the first Screen section.
[    75.887] (==) No screen section available. Using defaults.
[    75.887] (**) |-->Screen "Default Screen Section" (0)
[    75.887] (**) |   |-->Monitor "<default monitor>"
[    75.888] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    75.888] (**) |   |-->Device "Videocard0"
[    75.888] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    75.888] (**) Option "AIGLX" "on"
[    75.888] (==) Automatically adding devices
[    75.888] (==) Automatically enabling devices
[    75.888] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    75.888] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    75.888] (**) Extension "Composite" is enabled
[    75.888] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    75.888] (II) Loader magic: 0x7d37e0
[    75.888] (II) Module ABI versions:
[    75.888]     X.Org ANSI C Emulation: 0.4
[    75.888]     X.Org Video Driver: 10.0
[    75.888]     X.Org XInput driver : 12.2
[    75.888]     X.Org Server Extension : 5.0
[    75.892] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    75.893] (II) LoadModule: "extmod"
[    76.012] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    76.013] (II) Module extmod: vendor="X.Org Foundation"
[    76.013]     compiled for 1.10.2, module version = 1.0.0
[    76.013]     Module class: X.Org Server Extension
[    76.013]     ABI class: X.Org Server Extension, version 5.0
[    76.013] (II) Loading extension SELinux
[    76.013] (II) Loading extension MIT-SCREEN-SAVER
[    76.013] (II) Loading extension XFree86-VidModeExtension
[    76.013] (II) Loading extension XFree86-DGA
[    76.013] (II) Loading extension DPMS
[    76.013] (II) Loading extension XVideo
[    76.013] (II) Loading extension XVideo-MotionCompensation
[    76.013] (II) Loading extension X-Resource
[    76.013] (II) LoadModule: "dbe"
[    76.014] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    76.014] (II) Module dbe: vendor="X.Org Foundation"
[    76.014]     compiled for 1.10.2, module version = 1.0.0
[    76.014]     Module class: X.Org Server Extension
[    76.014]     ABI class: X.Org Server Extension, version 5.0
[    76.014] (II) Loading extension DOUBLE-BUFFER
[    76.014] (II) LoadModule: "glx"
[    76.014] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    76.063] (II) Module glx: vendor="NVIDIA Corporation"
[    76.064]     compiled for 4.0.2, module version = 1.0.0
[    76.064]     Module class: X.Org Server Extension
[    76.064] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    76.064] (II) Loading extension GLX
[    76.064] (II) LoadModule: "record"
[    76.066] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    76.067] (II) Module record: vendor="X.Org Foundation"
[    76.067]     compiled for 1.10.2, module version = 1.13.0
[    76.067]     Module class: X.Org Server Extension
[    76.067]     ABI class: X.Org Server Extension, version 5.0
[    76.067] (II) Loading extension RECORD
[    76.067] (II) LoadModule: "dri"
[    76.069] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    76.070] (II) Module dri: vendor="X.Org Foundation"
[    76.070]     compiled for 1.10.2, module version = 1.0.0
[    76.070]     ABI class: X.Org Server Extension, version 5.0
[    76.070] (II) Loading extension XFree86-DRI
[    76.070] (II) LoadModule: "dri2"
[    76.073] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    76.073] (II) Module dri2: vendor="X.Org Foundation"
[    76.073]     compiled for 1.10.2, module version = 1.2.0
[    76.073]     ABI class: X.Org Server Extension, version 5.0
[    76.073] (II) Loading extension DRI2
[    76.074] (II) LoadModule: "nvidia"
[    76.075] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    76.077] (II) Module nvidia: vendor="NVIDIA Corporation"
[    76.077]     compiled for 4.0.2, module version = 1.0.0
[    76.077]     Module class: X.Org Video Driver
[    76.078] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    76.078] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    76.078] (++) using VT number 1

[    76.090] (II) Loading sub module "fb"
[    76.090] (II) LoadModule: "fb"
[    76.092] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    76.093] (II) Module fb: vendor="X.Org Foundation"
[    76.093]     compiled for 1.10.2, module version = 1.0.0
[    76.093]     ABI class: X.Org ANSI C Emulation, version 0.4
[    76.093] (II) Loading sub module "wfb"
[    76.093] (II) LoadModule: "wfb"
[    76.095] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    76.096] (II) Module wfb: vendor="X.Org Foundation"
[    76.096]     compiled for 1.10.2, module version = 1.0.0
[    76.096]     ABI class: X.Org ANSI C Emulation, version 0.4
[    76.096] (II) Loading sub module "ramdac"
[    76.096] (II) LoadModule: "ramdac"
[    76.096] (II) Module "ramdac" already built-in
[    76.096] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    76.096] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    76.097] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    76.097] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    76.097] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    76.097] (==) NVIDIA(0): RGB weight 888
[    76.097] (==) NVIDIA(0): Default visual is TrueColor
[    76.097] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    76.098] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    76.107] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    76.107] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    76.107] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    76.107] (EE) NVIDIA(0):  *** Aborting ***
[    76.107] (II) UnloadModule: "nvidia"
[    76.108] (II) Unloading nvidia
[    76.108] (II) UnloadModule: "wfb"
[    76.108] (II) Unloading wfb
[    76.108] (II) UnloadModule: "fb"
[    76.108] (II) Unloading fb
[    76.108] (EE) Screen(s) found, but none have a usable configuration.
[    76.108] 
Fatal server error:
[    76.108] no screens found
[    76.108] 
Please consult the Fedora Project support 
     at [url]http://wiki.x.org[/url]
 for help. 
[    76.108] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    76.108]
Pour ce qui est de me référer "au démarrage init3"

J'ai jamais eu l'occasion de mettre mes mimines dans le camboui jusque là et j'ai pas trouvé.

Avec ça, j'espère que je pourrais récupérer mon systeme grace a vous.

c'est quand meme un sacré systeme de pouvoir faire tourner une F15 sur une clef usb pour venir sur le forum en débattre avec vous.

Merci d'avance !
Mais ce serait beaucoup mieux d'utiliser les balises code <> pour afficher le code, et voir quote pour citer.
Ça permettra de rendre ton post beaucoup plus clair.
Ce serait bien de le faire, en état c'est pas très lisible.

Il devrait te sauter au yeux, ces lignes :
[ 77.547] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[ 77.547] (EE) NVIDIA(0): system's kernel log for additional error messages and
[ 77.547] (EE) NVIDIA(0): consult the NVIDIA README for details.
[ 77.547] (EE) NVIDIA(0): *** Aborting ***
.
.
.
[ 77.547] (EE) Screen(s) found, but none have a usable configuration.
En fait (EE) signifie Error, ça t'es précisé en début du log :
] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown
Renvoie les sorties de : 
$ uname -rs
$ rpm -qa \*nvidia\*
Ces commandes te donneront la version du noyau Linux installée, puis on saura les paquets et modules Nvidia que tu as installés et si par hasard il n'y aurait pas correspondance des versions noyau/module.
Renseigne toi sur les modules du noyau (kernel module). Pour installer le pilote propriétaire Nvidia, comment tu t'y es pris ?

C'est peut être le temps de mettre ses mains dans le cambouis. (pour l'usage d'une Fedora, ce peut être très pratique ! )


PS : comment tu as fait pour lire ces fichiers, tu es passé par un liveCD, un autre système, ou par une console TTY ?
Je suis sur une version F15 installée sur une clef USB.
Quand je démarre sur le PC directement c'est bloqué et je n'ai pas la main pour faire quoique ce soit.
S'il y a une solution pour la reprendre, je suis prenneur.
Il va falloir que je me mette a apprendre l'anglais un jour car cela me pose de plus en plus de soucis pour comprendre ce qui se passe dans le monde linux.

Je vais tester la mise en page de code . . .
Dans un premier temps, j'aimerai que tu répondes à mon autre question :
Pour installer le pilote propriétaire Nvidia, comment tu t'y es pris ?
Car clairement tu ne fais pas tourner ton serveur graphique avec le pilote libre nouveau. Or le pilote nvidia déjà qu'il semble capricieux, ici tu as en plus un souci avec le module. Une solution serait peut être de désinstaller le pilote nvidia et de retourner au pilote nouveau (nouveau c'est le nom ! rien avoir avec nouvel, "vient de sortir" :-P , pas question ici de refaire le gag du diner de con).
Auquel cas il te faut démarrer en init3.
Déjà voyons si ça marche.

Donc démarrer en init3 :
Lors du lancement du système après le menu qui te permet d'accéder au BIOS, lorsqu'il y a un écran bleu ou un tiret blanc sur fond noir qui clignote, tu tapes sur un touche de ton clavier.
Ensuite tu sélectionnes un noyau, tu appuies sur la touche "a" de ton clavier (qui correspond à la touche "q" sur un clavier QWERTY), puis tu édites la ligne, supprimant les lettres rhgb et en rajoutant juste un 3 à la fin de la ligne.

1/désinstaller nvidia si init3 marche : 
$ su -lc 'yum remove xorg-x11-drv-nvidia kmod-nvidia'
$ su -lc 'mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old'
et redémarrer

SI cependant il est de notoriété que le pilote "NOUVEAU" ne marche pas avec ta carte graphique (j'y connais pas grand chose en Nvidia). Alors donne nous ce qui suit.

2/ Si oui, identifie toi et donne nous les informations suivante : 
$ uname -rs
$ rpm -qa \*nvidia\*
Si tu te sens d'humeur de recopier tout, pourquoi pas, sinon je te propose ceci ; générer un fichier texte (ici information.txt qui sera stocké dans ton /home), qui comportera les informations que te renverront ces commandes, grâce à cette commande :
$ uname -rs > ~/information.txt && rpm -qa \*nvidia\* >> ~/information.txt
Fil Rouge wrote:Dans un premier temps, j'aimerai que tu répondes à mon autre question :
Pour installer le pilote propriétaire Nvidia, comment tu t'y es pris ?
Car clairement tu ne fais pas tourner ton serveur graphique avec le pilote libre nouveau. Or le pilote nvidia déjà qu'il semble capricieux, ici tu as en plus un souci avec le module. Une solution serait peut être de désinstaller le pilote nvidia et de retourner au pilote nouveau (nouveau c'est le nom ! rien avoir avec nouvel, "vient de sortir" :-P , pas question ici de refaire le gag du diner de con).
Auquel cas il te faut démarrer en init3.
En fait il est installé avec le tutoriel qui est ici depuis la F13 :

http://doc.fedora-fr.org/wiki/Carte_graphique_NVIDIA_:_installation_des_pilotes#Pour_les_GeForce_s.C3.A9ries_6_et_au_del.C3.A0
Bon, sinon encore un autre moyen ce serait d'installer akmod-nvidia en plus de kmod-nvidia. Et on va faire le ménage là dedans histoire d'être sûr que tout est à jour. 
$ su -lc 'yum clean all && yum makecache && yum update && yum install akmod-nvidia'
Enfin si le init3 marche.
SI tu n'as encore rien fait de ce que j'ai proposé plus haut, commence par cette dernière proposition. On verra les autres solutions après.

PS : ce que je cherchais à savoir avec la commande : 
$ uname -rs
$ rpm -qa \*nvidia\*
était de savoir si 1/ tu utilisais le module qui correspondait à la version de ton noyau, et si non, 2/ si tu avais installé en parallèle akmod-nvidia. Pour l'explication akmod-nvidia au démarrage, après un changement (mise à jour) de noyau, va compiler le module kmod-nvidia nécessaire au bon fonctionnement du pilote et donc de ton serveur X graphique. Autrement dit, tu peux installer les deux, ça ne pose aucun problème, et évite le crash du serveur graphique si la mise à jour du noyau ne s'accompagne pas d'une mise à jour du module kmod-nvidia. Voilà.
ok je vais tester ça et je te donne des nouvelles.
j'ai éditer mon message, avec un peu plus de précision.
Il faut que je me garde le coup du mode 3 de coté . . .

Alors voila ce que ça donne :
Linux 2.6.38.7-30.fc15.x86_64
nvidia-settings-1.0-10.fc15.x86_64
kmod-nvidia-270.41.06-2.fc15.1.x86_64
xorg-x11-drv-nvidia-275.09.07-1.fc15.x86_64
kmod-nvidia-2.6.33.6-147.fc13.x86_64-195.36.31-1.fc13.1.x86_64
kmod-nvidia-2.6.33.6-147.2.4.fc13.x86_64-260.19.36-1.fc13.x86_64
kmod-nvidia-2.6.30.10-105.2.13.fc11.x86_64-190.53-1.fc11.2.x86_64
kmod-nvidia-2.6.30.10-105.2.23.fc11.x86_64-190.53-1.fc11.4.x86_64
xorg-x11-drv-nvidia-libs-275.09.07-1.fc15.x86_64
kmod-nvidia-2.6.30.10-105.2.16.fc11.x86_64-190.53-1.fc11.3.x86_64
akmod-nvidia-270.41.06-2.fc15.x86_64
kmod-nvidia-2.6.38.7-30.fc15.x86_64-270.41.06-2.fc15.1.x86_64
nvidia-xconfig-1.0-8.fc15.x86_64
J'ai testé la ligne de comande que tu as mis. 
$ su -lc 'yum clean all && yum makecache && yum update && yum install akmod-nvidia'
Rien n'a changé.
J'arrive toujours au bout avec un clignottement de l'écran et ensuite bloqué.

Il faudrait peut etre que je fasse une photo pour que tu vois ou ça bloque non ?
Essai de désinstaller le pilote nvidia, et revenir avec le pilote nouveau. (comme spécifié au #4) 
$ su -lc 'yum remove kmod-nvidia akmod-nvidia && mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old'
Pas besoin de photo. Si ça marche pas, les symptômes "visuels" n’aideront pas plus (tes logs sont explicites, y'a une erreur avec le module).
Quelqu'un de plus calé que moi en pilote nvidia pourra éventuellement mieux t'aider. Les pilotes nvidia demandent vraiment beaucoup de soin : http://doc.fedora-fr.org/wiki/Carte_NVIDIA_:_installation_des_pilotes#Fedora_et_nouveau

PS : tu as rebooter après la commande yum [...], que renvoie /var/log/Xorg.0.log après reboot. (Supposé question : est-ce que les messages d'erreur ont changé ?)
xorg.0.old : 
[    75.882] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    75.883] X Protocol Version 11, Revision 0
[    75.883] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    75.883] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    75.884] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rhgb quiet SYSFONT=latarcyrheb-sun16 LANG=fr_FR.UTF-8 KEYTABLE=fr-latin9
[    75.884] Build Date: 30 May 2011  12:42:58AM
[    75.884] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    75.884] Current version of pixman: 0.20.2
[    75.884]     Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    75.885] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    75.885] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Jul 14 15:31:32 2011
[    75.886] (==) Using config file: "/etc/X11/xorg.conf"
[    75.887] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    75.887] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    75.887] (==) No Layout section.  Using the first Screen section.
[    75.887] (==) No screen section available. Using defaults.
[    75.887] (**) |-->Screen "Default Screen Section" (0)
[    75.887] (**) |   |-->Monitor "<default monitor>"
[    75.888] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    75.888] (**) |   |-->Device "Videocard0"
[    75.888] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    75.888] (**) Option "AIGLX" "on"
[    75.888] (==) Automatically adding devices
[    75.888] (==) Automatically enabling devices
[    75.888] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    75.888] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    75.888] (**) Extension "Composite" is enabled
[    75.888] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    75.888] (II) Loader magic: 0x7d37e0
[    75.888] (II) Module ABI versions:
[    75.888]     X.Org ANSI C Emulation: 0.4
[    75.888]     X.Org Video Driver: 10.0
[    75.888]     X.Org XInput driver : 12.2
[    75.888]     X.Org Server Extension : 5.0
[    75.892] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    75.893] (II) LoadModule: "extmod"
[    76.012] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    76.013] (II) Module extmod: vendor="X.Org Foundation"
[    76.013]     compiled for 1.10.2, module version = 1.0.0
[    76.013]     Module class: X.Org Server Extension
[    76.013]     ABI class: X.Org Server Extension, version 5.0
[    76.013] (II) Loading extension SELinux
[    76.013] (II) Loading extension MIT-SCREEN-SAVER
[    76.013] (II) Loading extension XFree86-VidModeExtension
[    76.013] (II) Loading extension XFree86-DGA
[    76.013] (II) Loading extension DPMS
[    76.013] (II) Loading extension XVideo
[    76.013] (II) Loading extension XVideo-MotionCompensation
[    76.013] (II) Loading extension X-Resource
[    76.013] (II) LoadModule: "dbe"
[    76.014] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    76.014] (II) Module dbe: vendor="X.Org Foundation"
[    76.014]     compiled for 1.10.2, module version = 1.0.0
[    76.014]     Module class: X.Org Server Extension
[    76.014]     ABI class: X.Org Server Extension, version 5.0
[    76.014] (II) Loading extension DOUBLE-BUFFER
[    76.014] (II) LoadModule: "glx"
[    76.014] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    76.063] (II) Module glx: vendor="NVIDIA Corporation"
[    76.064]     compiled for 4.0.2, module version = 1.0.0
[    76.064]     Module class: X.Org Server Extension
[    76.064] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    76.064] (II) Loading extension GLX
[    76.064] (II) LoadModule: "record"
[    76.066] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    76.067] (II) Module record: vendor="X.Org Foundation"
[    76.067]     compiled for 1.10.2, module version = 1.13.0
[    76.067]     Module class: X.Org Server Extension
[    76.067]     ABI class: X.Org Server Extension, version 5.0
[    76.067] (II) Loading extension RECORD
[    76.067] (II) LoadModule: "dri"
[    76.069] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    76.070] (II) Module dri: vendor="X.Org Foundation"
[    76.070]     compiled for 1.10.2, module version = 1.0.0
[    76.070]     ABI class: X.Org Server Extension, version 5.0
[    76.070] (II) Loading extension XFree86-DRI
[    76.070] (II) LoadModule: "dri2"
[    76.073] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    76.073] (II) Module dri2: vendor="X.Org Foundation"
[    76.073]     compiled for 1.10.2, module version = 1.2.0
[    76.073]     ABI class: X.Org Server Extension, version 5.0
[    76.073] (II) Loading extension DRI2
[    76.074] (II) LoadModule: "nvidia"
[    76.075] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    76.077] (II) Module nvidia: vendor="NVIDIA Corporation"
[    76.077]     compiled for 4.0.2, module version = 1.0.0
[    76.077]     Module class: X.Org Video Driver
[    76.078] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    76.078] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    76.078] (++) using VT number 1

[    76.090] (II) Loading sub module "fb"
[    76.090] (II) LoadModule: "fb"
[    76.092] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    76.093] (II) Module fb: vendor="X.Org Foundation"
[    76.093]     compiled for 1.10.2, module version = 1.0.0
[    76.093]     ABI class: X.Org ANSI C Emulation, version 0.4
[    76.093] (II) Loading sub module "wfb"
[    76.093] (II) LoadModule: "wfb"
[    76.095] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    76.096] (II) Module wfb: vendor="X.Org Foundation"
[    76.096]     compiled for 1.10.2, module version = 1.0.0
[    76.096]     ABI class: X.Org ANSI C Emulation, version 0.4
[    76.096] (II) Loading sub module "ramdac"
[    76.096] (II) LoadModule: "ramdac"
[    76.096] (II) Module "ramdac" already built-in
[    76.096] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    76.096] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    76.097] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    76.097] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    76.097] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    76.097] (==) NVIDIA(0): RGB weight 888
[    76.097] (==) NVIDIA(0): Default visual is TrueColor
[    76.097] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    76.098] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    76.107] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    76.107] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    76.107] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    76.107] (EE) NVIDIA(0):  *** Aborting ***
[    76.107] (II) UnloadModule: "nvidia"
[    76.108] (II) Unloading nvidia
[    76.108] (II) UnloadModule: "wfb"
[    76.108] (II) Unloading wfb
[    76.108] (II) UnloadModule: "fb"
[    76.108] (II) Unloading fb
[    76.108] (EE) Screen(s) found, but none have a usable configuration.
[    76.108] 
Fatal server error:
[    76.108] no screens found
[    76.108] 
Please consult the Fedora Project support 
     at http://wiki.x.org
 for help. 
[    76.108] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    76.108]
Xorg.0. 
[    49.169] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    49.170] X Protocol Version 11, Revision 0
[    49.170] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    49.170] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    49.171] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rd_LVM_LV=vg_yamabushi/lv_root rd_LVM_LV=vg_yamabushi/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=fr_FR.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=fr-latin9 rhgb quiet
[    49.171] Build Date: 30 May 2011  12:42:58AM
[    49.171] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    49.171] Current version of pixman: 0.20.2
[    49.171]     Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    49.172] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    49.172] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Jul 16 15:41:36 2011
[    49.174] (==) Using config file: "/etc/X11/xorg.conf"
[    49.174] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    49.174] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    49.175] (==) No Layout section.  Using the first Screen section.
[    49.175] (==) No screen section available. Using defaults.
[    49.175] (**) |-->Screen "Default Screen Section" (0)
[    49.175] (**) |   |-->Monitor "<default monitor>"
[    49.175] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    49.175] (**) |   |-->Device "Videocard0"
[    49.175] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    49.175] (**) Option "AIGLX" "on"
[    49.175] (==) Automatically adding devices
[    49.175] (==) Automatically enabling devices
[    49.175] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    49.175] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    49.175] (**) Extension "Composite" is enabled
[    49.175] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    49.175] (II) Loader magic: 0x7d37e0
[    49.175] (II) Module ABI versions:
[    49.175]     X.Org ANSI C Emulation: 0.4
[    49.175]     X.Org Video Driver: 10.0
[    49.175]     X.Org XInput driver : 12.2
[    49.175]     X.Org Server Extension : 5.0
[    49.179] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    49.180] (II) LoadModule: "extmod"
[    49.298] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    49.299] (II) Module extmod: vendor="X.Org Foundation"
[    49.299]     compiled for 1.10.2, module version = 1.0.0
[    49.299]     Module class: X.Org Server Extension
[    49.299]     ABI class: X.Org Server Extension, version 5.0
[    49.300] (II) Loading extension SELinux
[    49.300] (II) Loading extension MIT-SCREEN-SAVER
[    49.300] (II) Loading extension XFree86-VidModeExtension
[    49.300] (II) Loading extension XFree86-DGA
[    49.300] (II) Loading extension DPMS
[    49.300] (II) Loading extension XVideo
[    49.300] (II) Loading extension XVideo-MotionCompensation
[    49.300] (II) Loading extension X-Resource
[    49.300] (II) LoadModule: "dbe"
[    49.301] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    49.301] (II) Module dbe: vendor="X.Org Foundation"
[    49.301]     compiled for 1.10.2, module version = 1.0.0
[    49.301]     Module class: X.Org Server Extension
[    49.301]     ABI class: X.Org Server Extension, version 5.0
[    49.301] (II) Loading extension DOUBLE-BUFFER
[    49.301] (II) LoadModule: "glx"
[    49.301] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    49.333] (II) Module glx: vendor="NVIDIA Corporation"
[    49.333]     compiled for 4.0.2, module version = 1.0.0
[    49.334]     Module class: X.Org Server Extension
[    49.334] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    49.334] (II) Loading extension GLX
[    49.334] (II) LoadModule: "record"
[    49.336] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    49.336] (II) Module record: vendor="X.Org Foundation"
[    49.336]     compiled for 1.10.2, module version = 1.13.0
[    49.336]     Module class: X.Org Server Extension
[    49.336]     ABI class: X.Org Server Extension, version 5.0
[    49.336] (II) Loading extension RECORD
[    49.336] (II) LoadModule: "dri"
[    49.339] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    49.340] (II) Module dri: vendor="X.Org Foundation"
[    49.340]     compiled for 1.10.2, module version = 1.0.0
[    49.340]     ABI class: X.Org Server Extension, version 5.0
[    49.340] (II) Loading extension XFree86-DRI
[    49.340] (II) LoadModule: "dri2"
[    49.342] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    49.342] (II) Module dri2: vendor="X.Org Foundation"
[    49.343]     compiled for 1.10.2, module version = 1.2.0
[    49.343]     ABI class: X.Org Server Extension, version 5.0
[    49.343] (II) Loading extension DRI2
[    49.343] (II) LoadModule: "nvidia"
[    49.344] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    49.345] (II) Module nvidia: vendor="NVIDIA Corporation"
[    49.345]     compiled for 4.0.2, module version = 1.0.0
[    49.346]     Module class: X.Org Video Driver
[    49.346] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    49.346] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    49.346] (++) using VT number 1

[    49.353] (II) Loading sub module "fb"
[    49.354] (II) LoadModule: "fb"
[    49.355] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    49.356] (II) Module fb: vendor="X.Org Foundation"
[    49.356]     compiled for 1.10.2, module version = 1.0.0
[    49.356]     ABI class: X.Org ANSI C Emulation, version 0.4
[    49.356] (II) Loading sub module "wfb"
[    49.356] (II) LoadModule: "wfb"
[    49.358] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    49.358] (II) Module wfb: vendor="X.Org Foundation"
[    49.359]     compiled for 1.10.2, module version = 1.0.0
[    49.359]     ABI class: X.Org ANSI C Emulation, version 0.4
[    49.359] (II) Loading sub module "ramdac"
[    49.359] (II) LoadModule: "ramdac"
[    49.359] (II) Module "ramdac" already built-in
[    49.359] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    49.359] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    49.359] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    49.360] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    49.360] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    49.360] (==) NVIDIA(0): RGB weight 888
[    49.360] (==) NVIDIA(0): Default visual is TrueColor
[    49.360] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    49.360] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    49.373] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    49.373] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    49.373] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    49.373] (EE) NVIDIA(0):  *** Aborting ***
[    49.373] (II) UnloadModule: "nvidia"
[    49.373] (II) Unloading nvidia
[    49.373] (II) UnloadModule: "wfb"
[    49.373] (II) Unloading wfb
[    49.373] (II) UnloadModule: "fb"
[    49.373] (II) Unloading fb
[    49.373] (EE) Screen(s) found, but none have a usable configuration.
[    49.373] 
Fatal server error:
[    49.374] no screens found
[    49.374] 
Please consult the Fedora Project support 
     at http://wiki.x.org
 for help. 
[    49.374] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    49.374]
Voila ce que ça marque.
Cela te parle plus qu'à moi peut etre ?
Même erreur => retour case départ, ce n'est pas un problème de mise à jour, ni de module qui ne correspond pas au noyau.
PS : si tu désinstalles kmod et akmod prévient moi, avant par exemple de lancer la prochaine commande. (elle a de l'intérêt si tu gardes installer le pilote nvidia).

Que donne : 
$ lsmod |grep nouveau
Juste comme ça, quand est en init3, tu peux te déplacer sur plusieurs fenêtre avec CTRL+ALT+F* (*= 1 ou 2 ou 3 ou 4 etc...).
Sur une autre fenêtre tu peux ouvrir un navigateur internet tel que links. Comme ça tu peux surfer tout en pouvant donner des commandes à ton système pour le moment pas très ergonomique !
La ligne de commande :
mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old
A renvoyé un message d'erreur que j'ai oublié de recopier disant qu'il ne trouvait pas les fichiers en question.
Fil Rouge wrote:Essai de désinstaller le pilote nvidia, et revenir avec le pilote nouveau. (comme spécifié au #4) 
$ su -lc 'yum remove kmod-nvidia akmod-nvidia && mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old'
Pas besoin de photo. Si ça marche pas, les symptômes "visuels" n’aideront pas plus (tes logs sont explicites, y'a une erreur avec le module).
Quelqu'un de plus calé que moi en pilote nvidia pourra éventuellement mieux t'aider. Les pilotes nvidia demandent vraiment beaucoup de soin : http://doc.fedora-fr.org/wiki/Carte_NVIDIA_:_installation_des_pilotes#Fedora_et_nouveau

PS : tu as rebooter après la commande yum [...], que renvoie /var/log/Xorg.0.log après reboot. (Supposé question : est-ce que les messages d'erreur ont changé ?)
Je viens de tester ça et cela ne marche pas mieux.

et les fichiers disent ça :

Pour Xorg.0 
[    47.118] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    47.118] X Protocol Version 11, Revision 0
[    47.118] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    47.118] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    47.120] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rd_LVM_LV=vg_yamabushi/lv_root rd_LVM_LV=vg_yamabushi/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=fr_FR.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=fr-latin9 rhgb quiet
[    47.120] Build Date: 30 May 2011  12:42:58AM
[    47.120] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    47.120] Current version of pixman: 0.20.2
[    47.120]     Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    47.120] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    47.120] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Jul 16 16:48:14 2011
[    47.122] (==) Using config file: "/etc/X11/xorg.conf"
[    47.122] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    47.122] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    47.123] (==) No Layout section.  Using the first Screen section.
[    47.123] (==) No screen section available. Using defaults.
[    47.123] (**) |-->Screen "Default Screen Section" (0)
[    47.123] (**) |   |-->Monitor "<default monitor>"
[    47.123] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    47.123] (**) |   |-->Device "Videocard0"
[    47.123] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    47.123] (**) Option "AIGLX" "on"
[    47.123] (==) Automatically adding devices
[    47.123] (==) Automatically enabling devices
[    47.123] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    47.123] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    47.123] (**) Extension "Composite" is enabled
[    47.123] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    47.123] (II) Loader magic: 0x7d37e0
[    47.123] (II) Module ABI versions:
[    47.124]     X.Org ANSI C Emulation: 0.4
[    47.124]     X.Org Video Driver: 10.0
[    47.124]     X.Org XInput driver : 12.2
[    47.124]     X.Org Server Extension : 5.0
[    47.127] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    47.128] (II) LoadModule: "extmod"
[    47.236] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    47.237] (II) Module extmod: vendor="X.Org Foundation"
[    47.237]     compiled for 1.10.2, module version = 1.0.0
[    47.237]     Module class: X.Org Server Extension
[    47.237]     ABI class: X.Org Server Extension, version 5.0
[    47.237] (II) Loading extension SELinux
[    47.237] (II) Loading extension MIT-SCREEN-SAVER
[    47.237] (II) Loading extension XFree86-VidModeExtension
[    47.237] (II) Loading extension XFree86-DGA
[    47.237] (II) Loading extension DPMS
[    47.237] (II) Loading extension XVideo
[    47.237] (II) Loading extension XVideo-MotionCompensation
[    47.237] (II) Loading extension X-Resource
[    47.237] (II) LoadModule: "dbe"
[    47.238] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    47.239] (II) Module dbe: vendor="X.Org Foundation"
[    47.239]     compiled for 1.10.2, module version = 1.0.0
[    47.239]     Module class: X.Org Server Extension
[    47.239]     ABI class: X.Org Server Extension, version 5.0
[    47.239] (II) Loading extension DOUBLE-BUFFER
[    47.239] (II) LoadModule: "glx"
[    47.239] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    47.271] (II) Module glx: vendor="NVIDIA Corporation"
[    47.271]     compiled for 4.0.2, module version = 1.0.0
[    47.271]     Module class: X.Org Server Extension
[    47.271] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    47.271] (II) Loading extension GLX
[    47.271] (II) LoadModule: "record"
[    47.273] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    47.273] (II) Module record: vendor="X.Org Foundation"
[    47.273]     compiled for 1.10.2, module version = 1.13.0
[    47.274]     Module class: X.Org Server Extension
[    47.274]     ABI class: X.Org Server Extension, version 5.0
[    47.274] (II) Loading extension RECORD
[    47.274] (II) LoadModule: "dri"
[    47.276] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    47.277] (II) Module dri: vendor="X.Org Foundation"
[    47.277]     compiled for 1.10.2, module version = 1.0.0
[    47.277]     ABI class: X.Org Server Extension, version 5.0
[    47.277] (II) Loading extension XFree86-DRI
[    47.277] (II) LoadModule: "dri2"
[    47.279] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    47.280] (II) Module dri2: vendor="X.Org Foundation"
[    47.280]     compiled for 1.10.2, module version = 1.2.0
[    47.280]     ABI class: X.Org Server Extension, version 5.0
[    47.280] (II) Loading extension DRI2
[    47.280] (II) LoadModule: "nvidia"
[    47.281] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    47.282] (II) Module nvidia: vendor="NVIDIA Corporation"
[    47.282]     compiled for 4.0.2, module version = 1.0.0
[    47.283]     Module class: X.Org Video Driver
[    47.283] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    47.283] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    47.283] (++) using VT number 1

[    47.290] (II) Loading sub module "fb"
[    47.290] (II) LoadModule: "fb"
[    47.291] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    47.292] (II) Module fb: vendor="X.Org Foundation"
[    47.292]     compiled for 1.10.2, module version = 1.0.0
[    47.292]     ABI class: X.Org ANSI C Emulation, version 0.4
[    47.292] (II) Loading sub module "wfb"
[    47.292] (II) LoadModule: "wfb"
[    47.293] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    47.294] (II) Module wfb: vendor="X.Org Foundation"
[    47.294]     compiled for 1.10.2, module version = 1.0.0
[    47.294]     ABI class: X.Org ANSI C Emulation, version 0.4
[    47.294] (II) Loading sub module "ramdac"
[    47.294] (II) LoadModule: "ramdac"
[    47.294] (II) Module "ramdac" already built-in
[    47.294] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    47.294] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    47.295] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    47.295] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    47.295] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    47.295] (==) NVIDIA(0): RGB weight 888
[    47.295] (==) NVIDIA(0): Default visual is TrueColor
[    47.295] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    47.295] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    47.298] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    47.298] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    47.298] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    47.298] (EE) NVIDIA(0):  *** Aborting ***
[    47.298] (II) UnloadModule: "nvidia"
[    47.298] (II) Unloading nvidia
[    47.298] (II) UnloadModule: "wfb"
[    47.298] (II) Unloading wfb
[    47.298] (II) UnloadModule: "fb"
[    47.298] (II) Unloading fb
[    47.298] (EE) Screen(s) found, but none have a usable configuration.
[    47.298] 
Fatal server error:
[    47.298] no screens found
[    47.299] 
Please consult the Fedora Project support 
     at http://wiki.x.org
 for help. 
[    47.299] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    47.299]

et Xorg.0.old
[    49.169] 
X.Org X Server 1.10.2
Release Date: 2011-05-28
[    49.170] X Protocol Version 11, Revision 0
[    49.170] Build Operating System: x86-06 2.6.32-71.14.1.el6.x86_64 
[    49.170] Current Operating System: Linux Yamabushi 2.6.38.7-30.fc15.x86_64 #1 SMP Fri May 27 05:15:53 UTC 2011 x86_64
[    49.171] Kernel command line: ro root=/dev/mapper/vg_yamabushi-lv_root rd_LVM_LV=vg_yamabushi/lv_root rd_LVM_LV=vg_yamabushi/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=fr_FR.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=fr-latin9 rhgb quiet
[    49.171] Build Date: 30 May 2011  12:42:58AM
[    49.171] Build ID: xorg-x11-server 1.10.2-1.fc15 
[    49.171] Current version of pixman: 0.20.2
[    49.171]     Before reporting problems, check http://wiki.x.org
    to make sure that you have the latest version.
[    49.172] Markers: (--) probed, (**) from config file, (==) default setting,
    (++) from command line, (!!) notice, (II) informational,
    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    49.172] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Jul 16 15:41:36 2011
[    49.174] (==) Using config file: "/etc/X11/xorg.conf"
[    49.174] (==) Using config directory: "/etc/X11/xorg.conf.d"
[    49.174] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    49.175] (==) No Layout section.  Using the first Screen section.
[    49.175] (==) No screen section available. Using defaults.
[    49.175] (**) |-->Screen "Default Screen Section" (0)
[    49.175] (**) |   |-->Monitor "<default monitor>"
[    49.175] (==) No device specified for screen "Default Screen Section".
    Using the first device section listed.
[    49.175] (**) |   |-->Device "Videocard0"
[    49.175] (==) No monitor specified for screen "Default Screen Section".
    Using a default monitor configuration.
[    49.175] (**) Option "AIGLX" "on"
[    49.175] (==) Automatically adding devices
[    49.175] (==) Automatically enabling devices
[    49.175] (==) FontPath set to:
    catalogue:/etc/X11/fontpath.d,
    built-ins
[    49.175] (**) ModulePath set to "/usr/lib64/xorg/modules/extensions/nvidia,/usr/lib64/xorg/modules"
[    49.175] (**) Extension "Composite" is enabled
[    49.175] (II) The server relies on udev to provide the list of input devices.
    If no devices become available, reconfigure udev or disable AutoAddDevices.
[    49.175] (II) Loader magic: 0x7d37e0
[    49.175] (II) Module ABI versions:
[    49.175]     X.Org ANSI C Emulation: 0.4
[    49.175]     X.Org Video Driver: 10.0
[    49.175]     X.Org XInput driver : 12.2
[    49.175]     X.Org Server Extension : 5.0
[    49.179] (--) PCI:*(0:0:5:0) 10de:0247:1025:0112 rev 162, Mem @ 0xc2000000/16777216, 0xd0000000/268435456, 0xc1000000/16777216, BIOS @ 0x????????/131072
[    49.180] (II) LoadModule: "extmod"
[    49.298] (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so
[    49.299] (II) Module extmod: vendor="X.Org Foundation"
[    49.299]     compiled for 1.10.2, module version = 1.0.0
[    49.299]     Module class: X.Org Server Extension
[    49.299]     ABI class: X.Org Server Extension, version 5.0
[    49.300] (II) Loading extension SELinux
[    49.300] (II) Loading extension MIT-SCREEN-SAVER
[    49.300] (II) Loading extension XFree86-VidModeExtension
[    49.300] (II) Loading extension XFree86-DGA
[    49.300] (II) Loading extension DPMS
[    49.300] (II) Loading extension XVideo
[    49.300] (II) Loading extension XVideo-MotionCompensation
[    49.300] (II) Loading extension X-Resource
[    49.300] (II) LoadModule: "dbe"
[    49.301] (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so
[    49.301] (II) Module dbe: vendor="X.Org Foundation"
[    49.301]     compiled for 1.10.2, module version = 1.0.0
[    49.301]     Module class: X.Org Server Extension
[    49.301]     ABI class: X.Org Server Extension, version 5.0
[    49.301] (II) Loading extension DOUBLE-BUFFER
[    49.301] (II) LoadModule: "glx"
[    49.301] (II) Loading /usr/lib64/xorg/modules/extensions/nvidia/libglx.so
[    49.333] (II) Module glx: vendor="NVIDIA Corporation"
[    49.333]     compiled for 4.0.2, module version = 1.0.0
[    49.334]     Module class: X.Org Server Extension
[    49.334] (II) NVIDIA GLX Module  275.09.07  Wed Jun  8 14:34:43 PDT 2011
[    49.334] (II) Loading extension GLX
[    49.334] (II) LoadModule: "record"
[    49.336] (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so
[    49.336] (II) Module record: vendor="X.Org Foundation"
[    49.336]     compiled for 1.10.2, module version = 1.13.0
[    49.336]     Module class: X.Org Server Extension
[    49.336]     ABI class: X.Org Server Extension, version 5.0
[    49.336] (II) Loading extension RECORD
[    49.336] (II) LoadModule: "dri"
[    49.339] (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so
[    49.340] (II) Module dri: vendor="X.Org Foundation"
[    49.340]     compiled for 1.10.2, module version = 1.0.0
[    49.340]     ABI class: X.Org Server Extension, version 5.0
[    49.340] (II) Loading extension XFree86-DRI
[    49.340] (II) LoadModule: "dri2"
[    49.342] (II) Loading /usr/lib64/xorg/modules/extensions/libdri2.so
[    49.342] (II) Module dri2: vendor="X.Org Foundation"
[    49.343]     compiled for 1.10.2, module version = 1.2.0
[    49.343]     ABI class: X.Org Server Extension, version 5.0
[    49.343] (II) Loading extension DRI2
[    49.343] (II) LoadModule: "nvidia"
[    49.344] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    49.345] (II) Module nvidia: vendor="NVIDIA Corporation"
[    49.345]     compiled for 4.0.2, module version = 1.0.0
[    49.346]     Module class: X.Org Video Driver
[    49.346] (II) NVIDIA dlloader X Driver  275.09.07  Wed Jun  8 14:18:12 PDT 2011
[    49.346] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[    49.346] (++) using VT number 1

[    49.353] (II) Loading sub module "fb"
[    49.354] (II) LoadModule: "fb"
[    49.355] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    49.356] (II) Module fb: vendor="X.Org Foundation"
[    49.356]     compiled for 1.10.2, module version = 1.0.0
[    49.356]     ABI class: X.Org ANSI C Emulation, version 0.4
[    49.356] (II) Loading sub module "wfb"
[    49.356] (II) LoadModule: "wfb"
[    49.358] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    49.358] (II) Module wfb: vendor="X.Org Foundation"
[    49.359]     compiled for 1.10.2, module version = 1.0.0
[    49.359]     ABI class: X.Org ANSI C Emulation, version 0.4
[    49.359] (II) Loading sub module "ramdac"
[    49.359] (II) LoadModule: "ramdac"
[    49.359] (II) Module "ramdac" already built-in
[    49.359] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[    49.359] (II) Loading /usr/lib64/xorg/modules/libwfb.so
[    49.359] (II) Loading /usr/lib64/xorg/modules/libfb.so
[    49.360] (II) NVIDIA(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    49.360] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[    49.360] (==) NVIDIA(0): RGB weight 888
[    49.360] (==) NVIDIA(0): Default visual is TrueColor
[    49.360] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[    49.360] (**) NVIDIA(0): Option "AddARGBGLXVisuals" "True"
[    49.373] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module. Please see the
[    49.373] (EE) NVIDIA(0):     system's kernel log for additional error messages and
[    49.373] (EE) NVIDIA(0):     consult the NVIDIA README for details.
[    49.373] (EE) NVIDIA(0):  *** Aborting ***
[    49.373] (II) UnloadModule: "nvidia"
[    49.373] (II) Unloading nvidia
[    49.373] (II) UnloadModule: "wfb"
[    49.373] (II) Unloading wfb
[    49.373] (II) UnloadModule: "fb"
[    49.373] (II) Unloading fb
[    49.373] (EE) Screen(s) found, but none have a usable configuration.
[    49.373] 
Fatal server error:
[    49.374] no screens found
[    49.374] 
Please consult the Fedora Project support 
     at http://wiki.x.org
 for help. 
[    49.374] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    49.374]
Je vais aller faire un tour sur ton lien nvidia.
$ cat /etc/X11/xorg.conf
ne te donne rien ?
C'est étonnant. Fait attention à la casse (majuscule etc...)
que donne : 
$ ls /etc/X11
Car si tu gardes ton fichier de configuration, mais que tu as désinstallé le pilote nvidia, tu peux toujours courir après, c'est sûr que ça ne marchera plus.

PS: ne me donne plus xorg.0.log.old, ce n'est plus nécessaire.
En plus du retour de la commande que te demande Fil Rouge : 
$ lsmod | grep nouveau
Peux-tu fournir aussi ce que retourne les commandes suivantes ? 
$ cat /proc/cmdline
et 
$ rpm -qa *nvidia*
Si tu as désinstallé kmod-nvidia et akmod-nvidia, ce n'est pas le module nvidia qui devrait être chargé contrairement à ce qu'indique le log /var/log/Xorg.0.log après reboot.
CanalGuada wrote: 
$ rpm -qa *nvidia*
Voir post #9.
J'ai l'impression qu'il y a un gros merdier sur mon ordi . . .

Bon je vais rebooter et lancer toutes ces commandes.
yamabushi wrote:J'ai l'impression qu'il y a un gros merdier sur mon ordi . . .

Bon je vais rebooter et lancer toutes ces commandes.
Non, je ne crois pas (on va trouver), je crois aussi surtout que tu devrais correctement répondre à nos questions ! (et pas en différé de 3 posts, j'avoue c'est pas forcément simple)
Car j'avoue que je suis brouillon, mais j'ai proposé 2 solutions distinctes, alors ne mélangeons pas tout.
1 / Soit tu décides de revenir à NOUVEAU
2/ Soit on regarde si il y a un problème de conflit avec le noyau et le module et on va plus loin dans le diagnostique.

3/ CanalGuada propose de refaire le point avec les commandes qu'il propose.... ce serait bon de lui répondre. (=> Méa Culpa, tu vas le faire :roll: )
Pas de soucis je vais faire mais il faut du temps pour rebooter a chaque fois et faire les manips.
Entre temps, et merci pour la ractivité des posteur qui se décarcasse pour moi, il y a d'autres question en plus alors j'ai un peu de décalage. Désolé !
Bon cette fois j'y retourne en mode texte et je vais essayer avec links si je m'en sors.
A toutes fins utiles, il faut aussi s'assurer que les outils de compilation sont présents ainsi que les paquets kernel-devel et kernel-headers correspondant au noyau.