Public bug reported:

Hi,

I rebooted this morning, and found that any login manager (lightdm or gdm) 
can't log me to any wm.
I had a log telling that gnome-shell segfaulted (which i don't use) and after 
removing gnome-shell and rebooting, i get "init: udev-fallback-graphics main 
process (1477) terminated with status 1" which may be not relevant.
The only solution I found was using startx in console, which works fine.

I have contradictory informations in X logs :
juil. 22 12:01 Xorg.1.log 
"[    60.052] Server terminated successfully (0). Closing log file."

juil. 22 11:58 Xorg.2.log
"[  1128.678] (EE) NVIDIA(GPU-0): EVO Push buffer channel allocation failed
[  1128.678] (EE)  *** Aborting ***
[  1128.678] (EE) NVIDIA(GPU-0): Failed to allocate EVO core DMA push buffer
[  1128.678] (EE)  *** Aborting ***
[  1128.678] (EE) NVIDIA(0): Failing initialization of X screen 0
[  1128.681] (II) UnloadModule: "nvidia"
[  1128.681] (II) UnloadSubModule: "wfb"
[  1128.681] (II) UnloadSubModule: "fb"
[  1128.681] (EE) Screen(s) found, but none have a usable configuration.
[  1128.681] 
Fatal server error:
[  1128.681] no screens found
[  1128.681] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[  1128.681] (EE) Please also check the log file at "/var/log/Xorg.2.log" for 
additional information.
[  1128.681] (EE) 
[  1128.682] Server terminated with error (1). Closing log file.
"
which may be old

The only thing sure is that login managers don't work anymore for me, only 
startx
thanks
raphael

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
Uname: Linux 3.8.0-27-generic x86_64
NonfreeKernelModules: nvidia wl
.proc.driver.nvidia.gpus.0: Error: [Errno 21] est un dossier: 
'/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  304.88  Wed Mar 27 14:26:46 
PDT 2013
 GCC version:  gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1)
.tmp.unity.support.test.0:
 
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Mon Jul 22 12:42:37 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation C79 [GeForce 9400] [10de:0867] (rev b1) (prog-if 00 [VGA 
controller])
   Subsystem: Apple Inc. iMac 9,1 [106b:00ad]
InstallationDate: Installed on 2013-04-29 (83 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Apple Inc. iMac9,1
MarkForUpload: True
ProcEnviron:
 TERM=xterm-256color
 SHELL=/bin/zsh
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-27-generic 
root=UUID=d6f252d8-0075-4eeb-a0d5-fc7e8238400d ro quiet splash
SourcePackage: xorg
Symptom: display
Title: Xorg crash
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/27/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM91.88Z.008D.B08.0904271717
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F2218EA9
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2218EA9
dmi.modalias: 
dmi:bvnAppleInc.:bvrIM91.88Z.008D.B08.0904271717:bd04/27/09:svnAppleInc.:pniMac9,1:pvr1.0:rvnAppleInc.:rnMac-F2218EA9:rvr:cvnAppleInc.:ct13:cvrMac-F2218EA9:
dmi.product.name: iMac9,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu0.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Mon Jul 22 12:03:32 2013
xserver.configfile: default
xserver.errors:
 open /dev/dri/card0: No such file or directory
 open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 
xserver.version: 2:1.13.3-0ubuntu6

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug crash raring third-party-packages ubuntu

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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1203708

Title:
  Xorg crash

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