Public bug reported:

The touchpad is not even detected when I do

$ xinput list

The trackpad is not even listed. I get the following output:-
===============================================================================

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Microsoft  Microsoft Basic Optical Mouse v2.0     id=10   [slave  pointer 
 (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ HD WebCam                                 id=11   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]
    ↳ Acer WMI hotkeys                          id=14   [slave  keyboard (3)]

===============================================================

The Microsoft Basic Optical mouse is an external USB mouse that I am
using. It has nothing to do with the trackpad.

BIOS version 1.05 found out using the following command:-

$ sudo dmidecode -s bios-version

$ lsb_release -rd

Description:    Ubuntu 12.10
Release:        12.10

$ uname -snrvmpio

Linux 3.5.0-27-generic #46-Ubuntu SMP Mon Mar 25 19:58:17 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-27-generic 3.5.0-27.46
ProcVersionSignature: Ubuntu 3.5.0-27.46-generic 3.5.7.7
Uname: Linux 3.5.0-27-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  ksinkar    1945 F.... pulseaudio
 /dev/snd/controlC0:  ksinkar    1945 F.... pulseaudio
Date: Sat Apr 20 09:45:47 2013
HibernationDevice: RESUME=UUID=d44b66a6-ca37-4076-847a-0fdc19a532d2
InstallationDate: Installed on 2013-04-19 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Acer AO725
MarkForUpload: True
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-27-generic 
root=UUID=ef27ada8-0e1d-47ab-8c39-2f5053fa092c ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-27-generic N/A
 linux-backports-modules-3.5.0-27-generic  N/A
 linux-firmware                            1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/05/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.05
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: ZA10_BZ
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnInsydeCorp.:bvrV1.05:bd07/05/2012:svnAcer:pnAO725:pvrV1.05:rvnAcer:rnZA10_BZ:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: AO725
dmi.product.version: V1.05
dmi.sys.vendor: Acer

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal running-unity

** Attachment added: "System information requested."
   
https://bugs.launchpad.net/bugs/1170883/+attachment/3648817/+files/trackpad_not_working_acer_one_725.zip

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https://bugs.launchpad.net/bugs/1170883

Title:
  Touchpad not working on Acer Aspire One 725

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