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[Jon Vaughan <jsvaughan@xxxxxxxxx>]

Thanks for the last two comments - I got in touch with Jeroen who posted
the spinics forum post, and he said that the best way to confirm the
problem was to either boot into Windows 8 safe mode or boot Windows 7
from USB and see what happened there.

Under Windows 8 safe mode there was no perceptible problem but as soon
as I booted Windows 7 it was clear that there was an issue, and the
cursor set off uncontrollably after a few seconds use.

I called Lenovo and yesterday they fitted a new keyboard bezel (which
contains a new trackpad) and over a few hours use yesterday I have had
no further  "lost sync" messages.  This was definitely a hardware issue
and I'd like to thank everyone for their help in sorting it out.

-- 
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https://bugs.launchpad.net/bugs/1268365

Title:
  [Lenovo Thinkpad t440s] Touchpad periodically stops working

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  Every 15 minutes or so, the cursor stops reacting to input from the touchpad or trackpoint. Unfortunately this machine has a "clickpad" instead of separate buttons and so it is impossible to use the machine without the touchpad, which means that Ubuntu is virtually unusable. In Windows on the same machine there is no problem. In syslog you see:
  Jan 12 19:08:43 mv8 kernel: [ 8460.304134] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
  Jan 12 19:08:43 mv8 kernel: [ 8460.305321] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
  Jan 12 19:08:43 mv8 kernel: [ 8460.306606] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
  Jan 12 19:08:43 mv8 kernel: [ 8460.307792] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
  Jan 12 19:08:43 mv8 kernel: [ 8460.309002] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1

  WORKAROUND: sudo rmmod psmouse
  sudo modprobe psmouse

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.23
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jon        2119 F.... pulseaudio
   /dev/snd/controlC0:  jon        2119 F.... pulseaudio
  Date: Sun Jan 12 19:42:27 2014
  HibernationDevice: RESUME=UUID=b5d52deb-2d98-4e2e-bdd1-c34a0bd2d9f6
  InstallationDate: Installed on 2013-12-04 (38 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 20AQCTO1WW
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=c0877b82-2224-438f-be5b-11b343943067 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/12/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET64WW (2.14 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AQCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET64WW(2.14):bd11/12/2013:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AQCTO1WW
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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