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[Martyn <martyn_berry@xxxxxxxxxxxxxxxx>]

It seems to be the same problem as I am having with my Dell Latitude
E7440 with Ubuntu 14.04.03, Ubuntu 15.04 amd64, Ubuntu 15.10 amd64, and
also when testing with  the latest  upstream kernels.

I raised a separate bug report for the problem as requested by
Christopher M. Penalver 22/10/15; this bug report is currently active
(https://bugs.launchpad.net/bugs/1513914)

I am not sure about the link, it seems to suggest that it has already
been fixed in kernel 3.1.6+, but I am now up to kernel 4.4.0 and the
problem still exists.

Martyn

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https://bugs.launchpad.net/bugs/1272624

Title:
  [Dell Latitude E7440] 14.04 Touchpad causing mouse pointer to
  spuriously jump around screen

Status in linux package in Ubuntu:
  Expired

Bug description:
  From the live usb the touchpad seems less jerky compared to ubuntu
  13.10 but is still not as smooth as Windows 7.

  This may be due to how the touchpad is detected as a PS/2 mouse instead of a more appropriate touchpad driver:
  https://launchpadlibrarian.net/163664336/BootDmesg.txt
  [    4.088881] mousedev: PS/2 mouse device common for all mice

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-5-generic 3.13.0-5.20
  ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
  Uname: Linux 3.13.0-5-generic x86_64
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     4246 F.... pulseaudio
   /dev/snd/controlC1:  ubuntu     4246 F.... pulseaudio
  CasperVersion: 1.336ubuntu1
  CurrentDesktop: Unity
  Date: Sat Jan 25 06:50:44 2014
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140124)
  MachineType: Dell Inc. Latitude E7440
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-5-generic N/A
   linux-backports-modules-3.13.0-5-generic  N/A
   linux-firmware                            1.122
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/02/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0PPXP5
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/02/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn0PPXP5:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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