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[Janne Heikkinen <janne.m.heikkinen@xxxxxxxxx>]

That seems to come from commit 3ace3686f198e656624d7ca2984d053e65f6e09d:

Input: psmouse - add support for detecting FocalTech PS/2 touchpads

The Asus X450 and X550 laptops use a PS/2 touchpad from a new
manufacturer called FocalTech:

https://bugzilla.kernel.org/show_bug.cgi?id=77391
https://bugzilla.redhat.com/show_bug.cgi?id=1110011

The protocol for these devices is not known at this time, but even
without knowing the protocol they need some special handling. They get
upset by some of our other PS/2 device probing, and once upset generate
random mouse events making things unusable even with an external mouse.

This patch adds detection of these devices based on their pnp ids, and
when they are detected, treats them as a bare ps/2 mouse. Doing things
this way they at least work in their ps/2 mouse emulation mode.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>

** Bug watch added: Linux Kernel Bug Tracker #77391
   http://bugzilla.kernel.org/show_bug.cgi?id=77391

** Bug watch added: Red Hat Bugzilla #1110011
   https://bugzilla.redhat.com/show_bug.cgi?id=1110011

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https://bugs.launchpad.net/bugs/1383097

Title:
  [Asus X553MA] Touchpad multi-touch features doesn't work

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Hi,
  I am using an Asus X553MA laptop. My touch pad works well. But the features like multitouch, scrolling etc doesn't seem to work.
  I tried the below command and it didn't return any output.

  cat /proc/bus/input/devices > ~/devices 
   xinput --list > ~/xinput

  And the below code returns all hardware info but not my touchpad

  ajith@ajith-X553MA:~$ cat /proc/bus/input/devices

  But i noticed a field as Mouse instead of my touchpad.

  I: Bus=0011 Vendor=0002 Product=0001 Version=0063
  N: Name="PS/2 Logitech Wheel Mouse"
  P: Phys=isa0060/serio4/input0
  S: Sysfs=/devices/platform/i8042/serio4/input/input12
  U: Uniq=
  H: Handlers=mouse0 event5 
  B: PROP=0
  B: EV=7
  B: KEY=70000 0 0 0 0 0 0 0 0
  B: REL=3

  I have  used a mouse earlier with the laptop. But it was not a
  Logitech one. It was an HP one.

  Please help
  --- 
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ajith      1832 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=f212c208-4c4f-4381-adf5-be331f2e13c9
  InstallationDate: Installed on 2014-10-12 (11 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140723)
  Lsusb:
   Bus 001 Device 004: ID 04ca:3010 Lite-On Technology Corp. 
   Bus 001 Device 003: ID 04f2:b424 Chicony Electronics Co., Ltd 
   Bus 001 Device 002: ID 8087:07e6 Intel Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. X553MA
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=088c9965-8b1b-46ad-9074-0a1f82a18a4e ro quiet splash acpi_osi=Linux acpi_backlight=vendor quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  RelatedPackageVersions:
   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
  Tags:  trusty
  Uname: Linux 3.13.0-37-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/16/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: X553MA.205
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: X553MA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX553MA.205:bd05/16/2014:svnASUSTeKCOMPUTERINC.:pnX553MA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX553MA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: X553MA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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