ETPS/2 Elantech Touchpad right-click does not work on Samsung NP900X4C, 12.04

I have two identical spec NP900X4C laptops. On one I installed 12.10, on the other 12.04.

On 12.10 the touchpad works fine, including right-click.

On 12.04 the touchpad works fine, EXCEPT for right-click. The standard settings options do not correct this problem.

I tried following the Enabling right button click instructions at https://wiki.ubuntu.com/DebuggingTouchpadDetection however the enable-rightbutton.sh script bailed out claiming the right-click area was not defined. The issue is also simpler than the mixture of problems reported at https://bugs.launchpad.net/bugs/933707

I therefore used xinput list-props on both devices to compare the settings for the touchpad. I discovered that on 12.04 "Synaptics Soft Button Areas" is set to all 0s, whereas on 12.10 it has specific settings.

I therefore applied the following command and the right-button immediately worked fine. I opened this bug so that the correct setting for this model of touchpad can be included in the standard 12.04 package.
 xinput set-prop <device-id> <property-id> 1630, 0, 1871, 0, 0, 0, 0,0

Kernel version: 3.2.0-35-generic
xserver-xorg-input-synaptics version: 1.6.2-1ubuntu1~precise2

Touchpad spec from /proc/input/bus/devices:
I: Bus=0011 Vendor=0002 Product=000e Version=0000
N: Name="ETPS/2 Elantech Touchpad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input6
U: Uniq=
H: Handlers=mouse0 event6
B: PROP=5
B: EV=b
B: KEY=e420 10000 0 0 0 0
B: ABS=661800011000003
---
ApportVersion: 2.0.1-0ubuntu15.1
Architecture: amd64
DistUpgraded: Fresh install
DistroCodename: precise
DistroRelease: Ubuntu 12.04
DistroVariant: ubuntu
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D
MarkForUpload: True
Package: xserver-xorg-input-synaptics 1.6.2-1ubuntu1~precise2
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-35-generic root=UUID=8a7d6bca-b3c0-499a-b4da-302ae8866a28 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
Tags: precise running-unity ubuntu referred-by-support
Uname: Linux 3.2.0-35-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/19/2012
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P02ABK
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NP900X4C-A04HK
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP02ABK:bd09/19/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3C/900X3D/900X4C/900X4D:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP900X4C-A04HK:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 900X3C/900X3D/900X4C/900X4D
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.7.8+bzr3121-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
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 2:2.17.0-1ubuntu4.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2