Xorg crashed with SIGSEGV in XIChangeDeviceProperty()

[Michael Terry]

I didn't see any particular trigger.

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-core 2:1.12.1.902-1ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-4.4-generic 3.5.0-rc6
Uname: Linux 3.5.0-4-generic i686
.tmp.unity.support.test.0:

ApportVersion: 2.3-0ubuntu4
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Fri Jul 13 08:03:05 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.1.18, 3.5.0-2-generic, i686: installed
 virtualbox, 4.1.18, 3.5.0-3-generic, i686: installed
 virtualbox, 4.1.18, 3.5.0-4-generic, i686: installed
ExecutablePath: /usr/bin/Xorg
ExtraDebuggingInterest: Yes,
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 18) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:3100]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110422)
Lsusb:
 Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System76, Inc. Lemur UltraThin
ProcCmdline: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-4-generic root=UUID=0e585e80-16f1-404c-80cc-7d9805fcc3b0 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0xb767b6c8 <XIChangeDeviceProperty+408>: mov 0x8(%ebp),%eax
 PC (0xb767b6c8) ok
 source "0x8(%ebp)" (0x00000009) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 XIChangeDeviceProperty ()
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: Xorg crashed with SIGSEGV in XIChangeDeviceProperty()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 11/11/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: CALPELLACRB.86C.0000.X.0000000000
dmi.board.asset.tag: Tag 12345
dmi.board.name: Lemur UltraThin
dmi.board.vendor: System76, Inc.
dmi.board.version: lemu2
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: lemu2
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrCALPELLACRB.86C.0000.X.0000000000:bd11/11/2010:svnSystem76,Inc.:pnLemurUltraThin:pvrlemu2:rvnSystem76,Inc.:rnLemurUltraThin:rvrlemu2:cvnSystem76,Inc.:ct10:cvrlemu2:
dmi.product.name: Lemur UltraThin
dmi.product.version: lemu2
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu2
version.libdrm2: libdrm2 2.4.37-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.12.1.902-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~really6.14.4-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-1build1

[Apport retracing service (apport)]

StacktraceTop:
 XIChangeDeviceProperty (dev=0xba35cc98, property=property@entry=279, type=19, format=format@entry=8, mode=<optimized out>, len=1, value=value@entry=0xba38ec1c, sendevent=sendevent@entry=1) at ../../Xi/xiproperty.c:772
 change_property (data=0xba38ec1c, len=<optimized out>, mode=<optimized out>, format=8, type=<optimized out>, property=279, dev=<optimized out>, client=<optimized out>) at ../../Xi/xiproperty.c:354
 ProcXChangeDeviceProperty (client=0xba25e948) at ../../Xi/xiproperty.c:908
 ProcIDispatch (client=0xba25e948) at ../../Xi/extinit.c:410
 Dispatch () at ../../dix/dispatch.c:428

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Fabian R. (faeber)]

Happens to me about every 1-3 hrs i have my laptop running.

I am on a Xubuntu 12.04 though. Started happening after update-manager installed xorg-server 2:1.11.4-0ubuntu10.5 last thursday. (I had 10.3 installed before.)

Not sure if it's really the same bug.