Xorg crashed with SIGABRT in __libc_message()

[Corrado]

Apport on startup.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-core 2:1.11.4-0ubuntu7
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
.tmp.unity.support.test.0:

ApportVersion: 1.95-0ubuntu1
Architecture: i386
CasperVersion: 1.312
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Thu Mar 29 16:08:02 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes, if not too technical
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
MachineType: Hewlett-Packard HP EliteBook 2760p
ProcCmdline: X -br -ac -noreset -nolisten tcp -nr vt7 :0
ProcEnviron:
 LANGUAGE=
 TERM=linux
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
Signal: 6
SourcePackage: xorg-server
Title: Xorg crashed with SIGABRT in raise()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 07/26/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68SOU Ver. F.02
dmi.board.name: 162A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 05.33
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68SOUVer.F.02:bd07/26/2011:svnHewlett-Packard:pnHPEliteBook2760p:pvrA0005F02:rvnHewlett-Packard:rn162A:rvrKBCVersion05.33:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 2760p
dmi.product.version: A0005F02
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.7.2-0ubuntu4
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #943880, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.