unity_support_test crashed with SIGSEGV in XF86DRIQueryExtension()

[joshiss]

i am using hp probook 4420s for testing the ubuntu11.04 beta1 when i try to login with ubuntu with unity it says you have no hardware for unity support select classic desktop when i say ok and it log in the system it gives the error which is reported in summary

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: nux-tools 0.9.42-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: Off
 modes: 1366x768
 edid-base64: AP///////wAw5FECAAAAAAATAQOAHxF4CmsVl1lWjCgeUFQAAAABAQEBAQEBAQEBAQEBAQEBEhtWeFAADjAgIDUANq4QAAAZAAAAAAAAAAAAAAAAAAAAAAAAAAAA/gBMRyBEaXNwbGF5CiAgAAAA/gBMUDE0MFdIMS1UTEMzAOw=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Tue Apr 12 13:34:53 2011
DistUpgraded: Log time: 2011-04-12 11:05:17.493492
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 8.840, 2.6.38-8-generic, i686: installed
 fglrx, 8.840, 2.6.35-28-generic, i686: installed
ExecutablePath: /usr/lib/nux/unity_support_test
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 12) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:1423]
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
InstallationMedia_: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Hewlett-Packard HP ProBook 4420s
ProcCmdline: /usr/lib/nux/unity_support_test
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, user)
 LANG=en_IN
 LC_MESSAGES=en_IN.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=96be45ad-662a-4a51-86f8-20fe0756d227 ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0xb7683824 <XF86DRIQueryExtension+142>: movzbl 0x4(%esi),%edx
 PC (0xb7683824) ok
 source "0x4(%esi)" (0x00000004) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
Stacktrace:
 #0 0xb7683824 in XF86DRIQueryExtension () from /usr/lib/fglrx/libGL.so.1
 No symbol table info available.
 #1 0xb772aae6 in ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
 No symbol table info available.
StacktraceTop:
 XF86DRIQueryExtension () from /usr/lib/fglrx/libGL.so.1
 ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
Title: unity_support_test crashed with SIGSEGV in XF86DRIQueryExtension()
UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p'] failed with exit code -11:
UpgradeStatus: Upgraded to natty on 2011-04-12 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (nautilus:2039): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 06/29/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68AHH Ver. F.09
dmi.board.name: 1423
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 53.1D
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68AHHVer.F.09:bd06/29/2010:svnHewlett-Packard:pnHPProBook4420s:pvr:rvnHewlett-Packard:rn1423:rvrKBCVersion53.1D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4420s
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4+bzr20110411-0ubuntu1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #746766, 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.