pulseaudio crashed with SIGSEGV in pa_object_cast()

[Chealdo Ortiga]

unplugged pc speaker error displays.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: pulseaudio 1:2.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
Uname: Linux 3.5.0-16-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu1
Architecture: i386
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Wed Oct 3 13:24:09 2012
Disassembly: => 0x0: Cannot access memory at address 0x0
ExecutablePath: /usr/bin/pulseaudio
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta i386 (20121001)
ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANGUAGE=en_PH:en
 LANG=en_PH.UTF-8
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
SegvAnalysis:
 Segfault happened at: 0x0: Cannot access memory at address 0x0
 PC (0x00000000) not located in a known VMA region (needed executable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: executing NULL VMA
Signal: 11
SourcePackage: pulseaudio
StacktraceTop:
 ?? ()
 ?? () from /usr/lib/pulse-2.1/modules/libalsa-util.so
 ?? () from /usr/lib/i386-linux-gnu/pulseaudio/libpulsecommon-2.1.so
 start_thread () from /lib/i386-linux-gnu/libpthread.so.0
 clone () from /lib/i386-linux-gnu/libc.so.6
Title: pulseaudio crashed with SIGSEGV in start_thread()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
XsessionErrors: (gnome-settings-daemon:2133): color-plugin-WARNING **: There is no colord server available
dmi.bios.date: 02/04/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0415
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P5KPL-AM EPU
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0415:bd02/04/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5KPL-AMEPU:rvrx.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 pa_object_cast (o=0x8c8a368) at ./pulsecore/object.h:64
 pa_source_assert_ref (o=0x8c8a368) at ./pulsecore/source.h:231
 mmap_read (on_timeout=false, polled=false, sleep_usec=<synthetic pointer>, u=0x8c967a8) at modules/alsa/alsa-source.c:476
 thread_func (userdata=0x8c967a8) at modules/alsa/alsa-source.c:1466

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.10 (quantal) reached end-of-life on May 16, 2014.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

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