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[Emil <emil.g.persson@xxxxxxxxx>]

I have the same problem but with my ASUS X550LN...

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https://bugs.launchpad.net/bugs/1376120

Title:
  Touch-pad dosen't work after installing Ubuntu 14.04 [Dual boot with
  Windows 8]

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Hi
  I just bought a new Acer Aspire V 15 Nitro computer with a pre-installed Windows 8. I installed Ubuntu so I can run dual-boot. Everything works fine now except my touch-pad that isn't working in Ubuntu but works fine when i boot into Windows. And when i'm in Ubuntu my USB mouse works fine aswell.

   cat /proc/bus/input/devices

   cat /proc/bus/input/devices
  This command does not show any SynPS/2 or anything.

  When i run

      xinput --list
  Under the Virtual core pointer there is only one

      Virtual core XTEST pointer
      Logitec USB-PS/2 Optical Mouse
  and then there is a empty slot where I think my touch-pad should be.

  In my system settings I can see the touch-pad and turn it on/off but
  nothing happens. I also installed Touch-pad indicator but nothing
  happens aswell.

  When I run

      cat /var/log/Xorg.0.log | grep -i synaptics

      [     4.362] (**)    : Applying InputClass "enable synaptics SHMConfig"
      [     4.362] (II) LoadModule: "synaptics"
      [     4.362] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
      [     4.362] (II) Module synaptics: vendor="X.Org Foundation"
      [     4.362] (II) Using input driver 'synaptics' for '   '
      [     4.388] (--) synaptics:    : x-axis range 0 - 1236 (res 12)
      [     4.388] (--) synaptics:    : y-axis range 0 - 898 (res 12)
      [     4.388] (II) synaptics:    : device does not report pressure, will use                 touch data.
      [     4.388] (II) synaptics:    : device does not report finger width.
      [     4.388] (--) synaptics:    : buttons: left double triple
      [     4.388] (--) synaptics:    : Vendor 0x6cb Product 0x2970
      [     4.388] (--) synaptics:    : invalid pressure range.  defaulting to 0 -         255
      [     4.388] (--) synaptics:    : invalid finger width range.  defaulting to 0         - 15
      [     4.388] (--) synaptics:    : touchpad found
      [     4.404] (**) synaptics:    : (accel) MinSpeed is now constant deceleration 2.5
      [     4.404] (**) synaptics:    : (accel) MaxSpeed is now 1.75
      [     4.404] (**) synaptics:    : (accel) AccelFactor is now 0.131
      [     4.404] (--) synaptics:    : touchpad found

  After running

       grep -i touchpad /var/log/Xorg.0.log
  the output is

        [     4.362] (**)    : Applying InputClass "evdev touchpad catchall"
        [     4.362] (**)    : Applying InputClass "touchpad catchall"
        [     4.388] (--) synaptics:    : touchpad found
        [     4.404] (II) XINPUT: Adding extended input device "   " (type: TOUCHPAD, id 12)
        [     4.404] (--) synaptics:    : touchpad found
        [     4.404] (**)    : Ignoring device from InputClass "touchpad ignore duplicates"

  but when i run

        xinput -list

  there is nothing with id 12

        ⎡ Virtual core pointer                        id=2    [master pointer  (3)]
        ⎜   ↳ Virtual core XTEST pointer                  id=4    [slave  pointer  (2)]
        ⎜   ↳ Logitech USB-PS/2 Optical Mouse             id=11   [slave  pointer  (2)]
        ⎜   ↳                                             id=12   [slave  pointer  (2)]

  I'm running Ubuntu 14.04.1 LTS, Release: 14.04

  From cat /proc/version_signature > version.log: Ubuntu 3.13.0-36.63-generic 3.13.11.6
  ---
  ApportVersion: 2.14.1-0ubuntu3.4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  eric       2183 F.... pulseaudio
   /dev/snd/controlC0:  eric       2183 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-09-30 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Acer Aspire VN7-591G
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic root=UUID=b973e8ad-55d3-4d12-a642-9cbec54417db ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-36-generic N/A
   linux-backports-modules-3.13.0-36-generic  N/A
   linux-firmware                             1.127.7
  StagingDrivers: rts5139
  Tags:  trusty staging
  Uname: Linux 3.13.0-36-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 07/30/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.05
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Aspire VN7-591G
  dmi.board.vendor: Acer
  dmi.board.version: V1.05
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: V1.05
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.05:bd07/30/2014:svnAcer:pnAspireVN7-591G:pvrV1.05:rvnAcer:rnAspireVN7-591G:rvrV1.05:cvnChassisManufacturer:ct10:cvrV1.05:
  dmi.product.name: Aspire VN7-591G
  dmi.product.version: V1.05
  dmi.sys.vendor: Acer

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