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[Bug 1433941] Re: [Lenovo E450] [ALPS touchpad] Multi-touch function of touchpad is useless after 14.04.2 installed.

 

this commit in mainline should have fixed it:

commit 3808843cf10e4a696d942359d99822eff1a2de8e
Author: Yunkang Tang <yunkang.tang@xxxxxxxxxxx>
Date:   Sat Jul 26 13:51:41 2014 -0700

    Input: alps - add support for v7 devices

    Such as found on the new Toshiba Portégé Z30-A and Z40-A.

    Signed-off-by: Yunkang Tang <yunkang.tang@xxxxxxxxxxx>
    [hdegoede@xxxxxxxxxx: Remove softbutton handling, this is done in userspace]
    [hdegoede@xxxxxxxxxx: Report INPUT_PROP_BUTTONPAD]
    [hdegoede@xxxxxxxxxx: Do not report fake PRESSURE, reporting BTN_TOUCH is
     enough]
    [hdegoede@xxxxxxxxxx: Various cleanups / refactoring]
    Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
    Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>


** Changed in: linux-lts-utopic (Ubuntu)
       Status: New => In Progress

** Changed in: linux-lts-utopic (Ubuntu)
   Importance: Undecided => High

** Changed in: linux-lts-utopic (Ubuntu)
     Assignee: (unassigned) => Adam Lee (adam8157)

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https://bugs.launchpad.net/bugs/1433941

Title:
  [Lenovo E450] [ALPS touchpad] Multi-touch function of touchpad is
  useless after 14.04.2 installed.

Status in HWE Next Project:
  New
Status in linux-lts-utopic package in Ubuntu:
  In Progress

Bug description:
  CID : 201411-16166 Lenovo E450 (I+A) with 14.04.2 (utopic)
  CID : 201411-16167 Lenovo E550 (I+A) with 14.04.2 (utopic)

  Touchpad : ALPS touchpad: E7=73 03 0a, EC=88 b0 13

  Steps:
  1. Install 14.04.2 on E450.
  2. Try to use muti-touch function of touchpad

  Expected result:
  Multi-touch works normally.

  Actual result:
  Multi-touch function of touchpad is useless after 14.04.2 installed.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified: boot/vmlinuz-3.16.0-30-generic]
  ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
  Uname: Linux 3.16.0-30-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Mar 19 03:55:25 2015
  InstallationDate: Installed on 2015-03-16 (2 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)
  --- 
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  u          1720 F.... pulseaudio
   /dev/snd/controlC1:  u          1720 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=76f01f63-3dd9-4798-aef1-1850bdeaa2a6
  InstallationDate: Installed on 2015-03-23 (15 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: LENOVO 20DFZ0V6US
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic root=UUID=76512549-0af0-4c73-a698-b0cd65896384 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-31-generic N/A
   linux-backports-modules-3.16.0-31-generic  N/A
   linux-firmware                             1.127.11
  Tags:  trusty
  Uname: Linux 3.16.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/11/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J5ET39WW (1.10 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20DFZ0V6US
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0E50510 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnLENOVO:bvrJ5ET39WW(1.10):bd11/11/2014:svnLENOVO:pn20DFZ0V6US:pvrThinkPadE550:rvnLENOVO:rn20DFZ0V6US:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20DFZ0V6US
  dmi.product.version: ThinkPad E550
  dmi.sys.vendor: LENOVO

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