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[Bug 1382702] Re: [Dell Latitude E7440] Touchpad out of sync


Colin Taylor, as per http://www.dell.com/support/home/us/en/19/product-
support/product/latitude-e7440-ultrabook/drivers/advanced an update to
your computer's buggy and outdated BIOS is available (A15). If you
update to this following https://help.ubuntu.com/community/BIOSUpdate
does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful. As well, you don't
have to create a new bug report.

Once the BIOS is updated, and the information above is provided, then
please mark this report Status Confirmed.

Thank you for your understanding.

** Tags removed: latest-bios-a10
** Tags added: bios-outdated-a10

** Changed in: linux (Ubuntu)
       Status: Triaged => Incomplete

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  [Dell Latitude E7440] Touchpad out of sync

Status in linux package in Ubuntu:

Bug description:
  The touchpad repetitively gets out of sync, causing the mouse to jump
  around and randomly click things:

  [  399.788431] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 6
  [  399.798582] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 - driver resynced.

  WORKAROUND: Loading the psmouse driver with proto=exps largely avoids
  the problem, but has the side effect of merging the trackpad and the
  nub together as one input device (so you can't disable the trackpad
  and just use the nub).

  Setting reset after on the driver does fix the random moving and
  clicking, but causes the CPU to thrash as it constantly disconnects
  and reconnects to try to "resync."

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-37-generic 3.13.0-37.64
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
   /dev/snd/controlC1:  taylocj1   2947 F.... pulseaudio
   /dev/snd/controlC0:  taylocj1   2947 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Oct 17 18:50:28 2014
  HibernationDevice: RESUME=UUID=f364f93e-bbb2-4f84-aa9c-6ae3a0f6b182
  InstallationDate: Installed on 2014-10-03 (14 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Latitude E7440
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-37-generic root=UUID=d5a9e110-1f9c-446f-84b8-e57ddf7afca6 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.13.0-37-generic N/A
   linux-backports-modules-3.13.0-37-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/26/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 07F3F4
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd06/26/2014:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7440
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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