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[Philippe Ombredanne <pombredanne@xxxxxxxxx>]

** Attachment added: "version.log"
   https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1480615/+attachment/4437563/+files/version.log

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https://bugs.launchpad.net/bugs/1480615

Title:
  [Dell Latitude E6540] ALPS touchpad and buttons work only in a single
  window.

Status in linux-lts-utopic package in Ubuntu:
  New

Bug description:
  I am using the very latest BIOS A15, with Ubuntu 14.04 LTS and the
  latest kernel for this is 3.16.0-45-generic #60~14.04.1-Ubuntu

  This is a kernel that has these recent ALPS related patches :
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1258837

  So after a reboot the touchpad and button work fine, at start.

  After a while the buttons, a single tap click , a double tap-click and
  the dual finger scrolling stop working on the correct front-most
  window and work instead on a background window.

  If I Alt-tab to bring the window that receives the touchpad events to
  front, it receives it ok,  so this one window gets mouse events. Using
  either the touchpad or the glidepoint is then limited to this window
  at this point.

  Going to a terminal with ctrl-alt-f1 just a few seconds and then back
  to ctrl-alt-f7 restores things to normal for a while.

  Until its starts again.

  No dmesg nor syslog show up so this may be an X issue instead. or this
  is a kernel issue. Not sure.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
  Uname: Linux 3.16.0-45-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Aug  2 00:08:53 2015
  InstallationDate: Installed on 2015-05-16 (77 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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