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[dino99 <548991@xxxxxxxxxxxxxxxxxx>]

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** Changed in: nvidia-graphics-drivers (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/548991

Title:
  Xorg crashed with SIGSEGV in XIChangeDeviceProperty() when pressing
  "disable touchpad" hardware-button multiple times

Status in nvidia-graphics-drivers package in Ubuntu:
  Invalid

Bug description:
  
  X crashed and I dropped back to the GDM loginscreen when i pressed the hardware-button to disable the touchpad. I think something is broken in the XIChangeDeviceProperty() because:

  1) When I log in my touchpad stops working (it works in GDM). The light indicating touchpad status is white (indicating it should work).
  2) When I press the disable touchpad button the light turns orange, indicating it shouldn't work, which it doesn't.
  3) When I press the button again the light turns white but I still can't use it.
  4) I press again and the light turns orange, trying to move the cursor does nothing.
  5) At last, when I press the button again the light turns white and this time I can use my touchpad.
  6) If i press the button again I'm going thru the process from step 2 to 5 again.

  X crashed when I had repeated 2-5 a numerous times, it happend while I
  was figuring out the behaviour of my "broken" touchpad.

  $ lsb_release -rd
  Description:	Ubuntu lucid (development branch)
  Release:	10.04

  ProblemType: Crash
  Architecture: amd64
  Date: Fri Mar 26 17:57:48 2010
  DistroRelease: Ubuntu 10.04
  DkmsStatus:
   virtualbox-ose, 3.1.4, 2.6.32-17-generic, x86_64: installed 
   virtualbox-ose, 3.1.4, 2.6.31-20-generic, x86_64: built 
   virtualbox-ose, 3.1.4, 2.6.32-16-generic, x86_64: installed 
   nvidia-current, 195.36.15, 2.6.32-17-generic, x86_64: installed 
   nvidia-current, 195.36.15, 2.6.32-16-generic, x86_64: installed
  ExecutablePath: /usr/bin/Xorg
  MachineType: Hewlett-Packard HP Pavilion dv7 Notebook PC
  NonfreeKernelModules: nvidia
  Package: xserver-xorg-core 2:1.7.6-1ubuntu1
  ProcCmdLine: root=UUID=a41a44bb-5f43-4074-91bb-695dc3aa1260 ro quiet splash
  ProcCmdline: /usr/bin/X :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-wIxb67/database -nolisten tcp vt7
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
  ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
  SegvAnalysis:
   Segfault happened at: 0x7f781bcf2063:	mov    0x1d0(%r12),%rdi
   PC (0x7f781bcf2063) ok
   source "0x1d0(%r12)" (0x000001d0) not located in a known VMA region (needed readable region)!
   destination "%rdi" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: nvidia-graphics-drivers
  StacktraceTop:
   ?? ()
   XIChangeDeviceProperty ()
   ?? ()
   ?? ()
   _start ()
  Title: Xorg crashed with SIGSEGV in XIChangeDeviceProperty()
  Uname: Linux 2.6.32-17-generic x86_64
  UserGroups:
   
  dmi.bios.date: 02/06/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.26
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 30F4
  dmi.board.vendor: Compal
  dmi.board.version: 99.98
  dmi.chassis.type: 10
  dmi.chassis.vendor: Compal
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.26:bd02/06/2009:svnHewlett-Packard:pnHPPaviliondv7NotebookPC:pvrF.26:rvnCompal:rn30F4:rvr99.98:cvnCompal:ct10:cvrN/A:
  dmi.product.name: HP Pavilion dv7 Notebook PC
  dmi.product.version: F.26
  dmi.sys.vendor: Hewlett-Packard
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       x86_64
   kernel:             2.6.32-17-generic

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