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[Dirk Seidel <1172094@xxxxxxxxxxxxxxxxxx>]

I used 'apport-cli -f -p xorg' to report the bug. Here it is:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1437867

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https://bugs.launchpad.net/bugs/1172094

Title:
  xorg synaptic driver crashes

Status in xf86-input-synaptics:
  Confirmed
Status in xserver-xorg-input-synaptics package in Ubuntu:
  Incomplete
Status in xserver-xorg-input-synaptics package in Debian:
  Confirmed
Status in xserver-xorg-input-synaptics package in Suse:
  Won't Fix

Bug description:
  Recently, I've seen the Xorg synaptic driver crashing with the
  following in /var/log/Xorg.0.log:

  EE) BUG: triggered 'if (priv->num_active_touches > priv->num_slots)'
  (EE) BUG: ../../src/synaptics.c:3123 in UpdateTouchState()
  (EE) 
  (EE) Backtrace:
  (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f10ded9f476]
  (EE) 1: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f10d8b3b000+0x2e97) [0x7f10d8b3de97]
  (EE) 2: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f10d8b3b000+0x45b3) [0x7f10d8b3f5b3]
  (EE) 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f10d8b3b000+0x7014) [0x7f10d8b42014]
  (EE) 4: /usr/bin/X (0x7f10debef000+0x96927) [0x7f10dec85927]
  (EE) 5: /usr/bin/X (0x7f10debef000+0xc0328) [0x7f10decaf328]
  (EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f10ddcf2000+0xfbd0) [0x7f10ddd01bd0]
  (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (__select+0x33) [0x7f10dca10233]
  (EE) 8: /usr/bin/X (WaitForSomething+0x190) [0x7f10ded9c870]
  (EE) 9: /usr/bin/X (0x7f10debef000+0x58811) [0x7f10dec47811]
  (EE) 10: /usr/bin/X (0x7f10debef000+0x4757a) [0x7f10dec3657a]
  (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f10dc93fea5]
  (EE) 12: /usr/bin/X (0x7f10debef000+0x478c1) [0x7f10dec368c1]
  (EE) 
  (EE) BUG: triggered 'if (priv->num_active_touches > priv->num_slots)'
  (EE) BUG: ../../src/synaptics.c:3123 in UpdateTouchState()
  (EE)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  Date: Tue Apr 23 20:02:00 2013
  DistUpgraded: Fresh install
  DistroCodename: raring
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.2.10, 3.8.0-18-generic, x86_64: installed
   virtualbox, 4.2.10, 3.8.0-19-generic, x86_64: installed
   virtualbox-guest, 4.2.10, 3.8.0-18-generic, x86_64: installed
   virtualbox-guest, 4.2.10, 3.8.0-19-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21ce]
  InstallationDate: Installed on 2013-04-18 (5 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64+mac (20130418)
  Lsusb:
   Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0024 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
   Bus 001 Device 003: ID 04f2:b221 Chicony Electronics Co., Ltd integrated camera
  MachineType: LENOVO 4177CTO
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=UUID=56291af5-0aa4-434c-bb67-6bd67ce6c142 ro rootflags=subvol=@ quiet
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/28/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 83ET67WW (1.37 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4177CTO
  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:bvr83ET67WW(1.37):bd11/28/2011:svnLENOVO:pn4177CTO:pvrThinkPadT420:rvnLENOVO:rn4177CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4177CTO
  dmi.product.version: ThinkPad T420
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.43-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
  xserver.bootTime: Sun Apr 21 20:48:59 2013
  xserver.configfile: default
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.13.3-0ubuntu6
  xserver.video_driver: intel

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