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[Ednilton Santos de Oliveira <1442863@xxxxxxxxxxxxxxxxxx>]

I am experiencing the same issue on a Dell Inspiron 15 with a touch
screen (kubuntu 14.10 and also with 15.04). Here, I can get touchpad
working again if I touch the screen once. The touchpad gets alive again,
but the touch screen stops working completely. I tried to compile kernel
4.0.4, but it did not solved this issue.

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https://bugs.launchpad.net/bugs/1442863

Title:
  dell inspiron touchpad stops working

Status in xserver-xorg-input-synaptics package in Ubuntu:
  Confirmed

Bug description:
  I have a Dell Inspiron 15 5000 series according to the laptop sticker.
  The clickpad generally works fine but sometimes locks up. By locking
  up I mean that using the trackpad to move the cursor doesn't work but
  using the trackpad to click still does. Sometimes the two finger
  scroll seems to carry on working and sometimes it doesn't.

  I'm not sure of a pattern, sometimes it seems to happen directly after
  logging in, though it has happened at the login screen before.
  Sometimes it seems to be triggered by two finger scrolling, in this
  case the scrolling always seems to carry on working and usually after
  scrobbling about on the touchpad it seems to start working again. It
  always seems to happen after doing a fast user switch and in this case
  the scrolling doesn't work at all.

  The problem existed in 14.04 and upgrading to 14.10 didn't make it go
  away.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: xserver-xorg-input-synaptics 1.8.1-1ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-33.44-generic 3.16.7-ckt7
  Uname: Linux 3.16.0-33-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Apr 11 08:24:28 2015
  DistUpgraded: 2015-04-08 23:52:22,920 DEBUG enabling apt cron job
  DistroCodename: utopic
  DistroVariant: ubuntu
  InstallationDate: Installed on 2015-04-08 (2 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Dell Inc. Inspiron 5548
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-33-generic.efi.signed root=UUID=a79c9d27-686b-4bf4-94fe-4f697108dff1 ro quiet splash vt.handoff=7
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: Upgraded to utopic on 2015-04-08 (2 days ago)
  dmi.bios.date: 01/23/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 079JDM
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A03
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd01/23/2015:svnDellInc.:pnInspiron5548:pvrA03:rvnDellInc.:rn079JDM:rvrA00:cvnDellInc.:ct8:cvrA03:
  dmi.product.name: Inspiron 5548
  dmi.product.version: A03
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Sat Apr 11 08:13:54 2015
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                1110
   vendor                                     LGD
  xserver.version: 2:1.16.0-1ubuntu1.3

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