1.6.2-1ubuntu1~precise2 which I think has this patch, and also 1.5.99,
continue to crash for me with this SEGV on occasion, shortly but not
immediately after unlocking the screen (not necessarily after resume
from suspend). No clear way to reproduce. Anything that can be done to
help? (Any all-in-one instructions available for rebuilding X + drivers
with symbols and running through Valgrind?)

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/956071

Title:
  Xorg crashed with SIGSEGV in XIGetDeviceProperty()

Status in OEM Priority Project:
  Fix Released
Status in OEM Priority Project precise series:
  Fix Released
Status in X.Org X server:
  Confirmed
Status in “xserver-xorg-input-synaptics” package in Ubuntu:
  Fix Released
Status in “xserver-xorg-input-synaptics” source package in Precise:
  Fix Released
Status in “xorg-server” package in Debian:
  Fix Released

Bug description:
  [Impact]

  Causes crashes in the xserver usually on resume from suspend.

  [Test Case]

  - Put one or more fingers to the touchpad
  - Send the computer to standby, or disable the pad using 'xinput disable' 
with the finger(s) still on the pad
  - Remove the fingers
  - Resume the computer or enable the touchpad again using 'xinput enable'
  - Touch the pad again

  [Regression Potential]

  none, the patch resets a counter on device reset that should be zero
  at that point

  --
  Crash on resume in xserver-xorg-input-synaptics. Version 1.5.99.902-0ubuntu5 
works, the workaround is to downgrade to that version.

  It appears to hit many newer laptops causing data loss.

  Original description

  Happens quite often, but I can't find a pattern to when it  happens.

  Might be related to either firefox or Minecraft (openjdk-6) but I am
  not certain.

  #10 <signal handler called>
  No symbol table info available.
  #11 XIGetDeviceProperty (dev=0xb9238788, property=277, value=0xbffa7cdc) at 
../../Xi/xiproperty.c:852
          handler = <optimized out>
          prop = 0xb923c8d8
          rc = <optimized out>
  #12 0xb7667797 in get_property (dev=<optimized out>, property=277, type=19, 
offset=0, length=1, bytes_after=0xbffa7d84, type_return=0xbffa7d8c, 
format=0xbffa7d7c, nitems=0xbffa7d80, length_return=0xbffa7d78, 
data=0xbffa7d88, delete=<optimized out>, client=<optimized out>) at 
../../Xi/xiproperty.c:290
          n = <optimized out>
          len = <optimized out>
          ind = <optimized out>
          rc = <optimized out>
          prop = <optimized out>
          prop_value = <optimized out>

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: xserver-xorg-core 2:1.11.4-0ubuntu6
  ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9
  Uname: Linux 3.2.0-18-generic-pae i686
  .tmp.unity.support.test.0:

  ApportVersion: 1.94.1-0ubuntu2
  Architecture: i386
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  Date: Thu Mar 15 08:30:43 2012
  DistUpgraded: Fresh install
  DistroCodename: precise
  DistroVariant: ubuntu
  ExecutablePath: /usr/bin/Xorg
  ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
  GraphicsCard:
   Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] 
(rev 02) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21c5]
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120304)
  MachineType: LENOVO 02173BG
  ProcCmdline: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 
-novtswitch -background none
  ProcEnviron:

  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-18-generic-pae 
root=UUID=f58bc641-2db1-4b1d-a839-3b04dc4e9ee2 ro quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0xb7667528 <XIChangeDeviceProperty+440>:       mov    
0x8(%esi),%eax
   PC (0xb7667528) ok
   source "0x8(%esi)" (0x00000009) not located in a known VMA region (needed 
readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: xorg-server
  StacktraceTop:
   XIGetDeviceProperty ()
   ?? ()
   ?? ()
   ?? ()
   ?? ()
  Title: Xorg crashed with SIGSEGV in XIGetDeviceProperty()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  dmi.bios.date: 01/03/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 84ET23WW (1.07 )
  dmi.board.name: 02173BG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr84ET23WW(1.07):bd01/03/2011:svnLENOVO:pn02173BG:pvrThinkPadEdge:rvnLENOVO:rn02173BG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 02173BG
  dmi.product.version: ThinkPad Edge
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
  version.libdrm2: libdrm2 2.4.30-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu4
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu4
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 
1:2.6.99.901+git20120126-0ubuntu2
  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

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