Xorg crashed with SIGSEGV in read_encoded_value_with_base()

[tctwyan]

Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
N: 找不到套件 xorg-server

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-core 2:1.15.0-1ubuntu6
ProcVersionSignature: Ubuntu 3.13.0-14.34-generic 3.13.5
Uname: Linux 3.13.0-14-generic i686
ApportVersion: 2.13.2-0ubuntu5
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sat Mar 1 20:43:44 2014
DistUpgraded: 2014-02-22 12:21:59,800 DEBUG failed to SystemUnLock() (E:未鎖定)
DistroCodename: trusty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:817a]
InstallationDate: Installed on 2014-01-18 (43 days ago)
InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release i386 (20131017)
MachineType: System manufacturer System Product Name
ProcCmdline: /usr/bin/X :1 -background none -verbose -auth /var/run/gdm/auth-for-gdm-SxQwA8/database -seat seat0 -nolisten tcp vt7
ProcEnviron:
 LANG=zh_TW.UTF-8
 TERM=linux
 LANGUAGE=zh_TW:en_US:en
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-14-generic root=UUID=498f21b4-ca66-4df2-888c-d032e9c0932b ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0xb7013b5e: cmpw $0xb858,(%eax)
 PC (0xb7013b5e) ok
 source "$0xb858" ok
 destination "(%eax)" (0x00000041) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 ?? ()
 CloseWellKnownConnections ()
 ?? ()
 FatalError ()
Title: Xorg crashed with SIGSEGV in CloseWellKnownConnections()
UpgradeStatus: Upgraded to trusty on 2014-02-22 (8 days ago)
UserGroups:

dmi.bios.date: 08/01/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0303
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5GC-MX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev x.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: Rev 1.xx
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0303:bd08/01/2007:svnSystemmanufacturer:pnSystemProductName:pvrRev1.xx:rvnASUSTeKComputerINC.:rnP5GC-MX:rvrRevx.xx:cvnASUSTekComputerINC.:ct3:cvrRev1.xx:
dmi.product.name: System Product Name
dmi.product.version: Rev 1.xx
dmi.sys.vendor: System manufacturer
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc1-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc1-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Mar 2 18:21:16 2014
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input USB Keyboard KEYBOARD, id 8
 input USB Keyboard KEYBOARD, id 9
 input Logitech USB Optical Mouse MOUSE, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 28956
 vendor VSC
xserver.version: 2:1.15.0-1ubuntu6

[Apport retracing service (apport)]

StacktraceTop:
 read_encoded_value_with_base (val=<synthetic pointer>, p=0xbfad4fe9 "P\255\277\025\070&\267 7&\267\fP\255\277\200P\255\277SWu\267\005", base=0, encoding=0 '\000') at ../../../src/libgcc/unwind-pe.h:207
 read_encoded_value (val=<synthetic pointer>, p=0xbfad4fe9 "P\255\277\025\070&\267 7&\267\fP\255\277\200P\255\277SWu\267\005", encoding=0 '\000', context=0xbfad4ea0) at ../../../src/libgcc/unwind-pe.h:282
 extract_cie_info (fs=<optimized out>, context=<optimized out>, cie=0xc0000000) at ../../../src/libgcc/unwind-dw2.c:488
 uw_frame_state_for (context=0xbfad4ea0, fs=0xbfad4f20) at ../../../src/libgcc/unwind-dw2.c:1262
 frame_downheap (ob=0x41, fde_compare=0xbfad554c, a=0x0, lo=-1079160200, hi=-1079160204) at ../../../src/libgcc/unwind-dw2-fde.c:488

[penalvch (penalvch)]

tctwyan, thank you for reporting this and helping make Ubuntu better. As per https://www.asus.com/Motherboards/P5GCMX/HelpDesk_Download/ an update to your computer's buggy and outdated BIOS is available (0518). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status New. Otherwise, please mark this as Invalid.

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]