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[Roman Lenskij <1070207@xxxxxxxxxxxxxxxxxx>]

Can confirm that this bug still exists on Lenovo L430/L530 with Ubuntu
14.10

As there still seems to be no solution, I present you one:
The attachment is a dkms tar.gz with a backported elantech driver from the current 3.18 kernel (that has the the fix for the issue included).

I call it "backported" as it was _slightly_ changed. 
__set_bit(INPUT_PROP_POINTING_STICK, tp_dev->propbit);  had to be commented out in elantech.c as kernel 3.16 doesn't support the INPUT_PROP_POINTING_STICK bit.

Apart from elantech.c and elantech.h everything else was coppied from
the latest 3.16 ubuntu kernel sources.

TL;DR:
Download the attachement.
sudo apt-get install dkms
sudo dkms ldtarball psmouse-elantech-3-18.tar.gz 
sudo dkms install -m psmouse -v elantech-3-18
sudo rmmod psmouse
sudo modprobe psmouse

** Attachment added: "elantech.c and elantech.h backported from the current 3.18 kernel"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1070207/+attachment/4278066/+files/psmouse-elantech-3-18.tar.gz

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https://bugs.launchpad.net/bugs/1070207

Title:
  Trackpoint doesn't work on Thinkpad L530

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  The trackpoint on my Thinkpad doesn't work. This is rather annoying,
  since I specifically bought it because it had Ubuntu hardware
  certification:

  http://www.ubuntu.com/certification/hardware/201202-10579/

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: xserver-xorg-input-synaptics 1.6.2-1ubuntu5
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  Date: Tue Oct 23 07:55:58 2012
  DistUpgraded: 2012-10-19 12:30:38,295 DEBUG enabling apt cron job
  DistroCodename: quantal
  DistroVariant: ubuntu
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: LENOVO 24812TG
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=a6e4e235-d477-4e04-8f43-0b8a7ca5ed03 ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: Upgraded to quantal on 2012-10-19 (3 days ago)
  dmi.bios.date: 05/28/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G3ET34WW(1.08)
  dmi.board.asset.tag: Not Available
  dmi.board.name: 24812TG
  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:bvrG3ET34WW(1.08):bd05/28/2012:svnLENOVO:pn24812TG:pvrThinkPadL530:rvnLENOVO:rn24812TG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 24812TG
  dmi.product.version: ThinkPad L530
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.8.4-0ubuntu3
  version.ia32-libs: ia32-libs 20090808ubuntu36
  version.libdrm2: libdrm2 2.4.39-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3

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