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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue start happening after an update/upgrade?  Was there a prior kernel version where you were not having this particular problem? 

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.19 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-vivid/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1423704

Title:
  Elantech touchpad without multi-touch Ubuntu 14.04.1

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On my Lenovo B50-70 laptop there is a Elantech touchpad installed.
  It is working perfectly as a mouse but scrolling, multi-touch, 2 finger gestures are not working. 
  Many people are reporting this for older kernels. I would like to report this for: Ubuntu 14.04.1 LTS.

  
  Kernel: 3.13.0-45-generic #74-Ubuntu SMP Tue Jan 13 19:36:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
  Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13


  There are many workarounds posted like the one below.
  It is a kind of bypass using dkms and dynamically add a module.
  Some users reporting that the dynamic module does not survive a reboot. This is "fixed" by adding the remove of the psmouse and adding the new psmouse module. The code seems to work perfectly, never the less.

  I am wondering if there is a permanent solution in one of the next kernel and would like to provide you information.
  In ubuntu 14.10 (32 bit) it is working.


  == Dynamic fix using dkms ==

  See bug: 1166442
  Code:

  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1166442/+attachment/3941591/+files
  /psmouse-elantech-x551c.tar.gz


  == data ==

  I looked on the ubuntu store and found: gpointing-device-settings 1.5.1-6ubuntu2
  It has selection boxes for emulation of horizontal/vertical scrolling but it is not working.

  
  Xorg.0.log shows the following:

  [  1367.403] (II) config/udev: Adding input device PS/2 Elantech Touchpad (/dev/input/event4)
  [  1367.403] (**) PS/2 Elantech Touchpad: Applying InputClass "evdev pointer catchall"
  [  1367.403] (II) Using input driver 'evdev' for 'PS/2 Elantech Touchpad'
  [  1367.403] (**) PS/2 Elantech Touchpad: always reports core events
  [  1367.403] (**) evdev: PS/2 Elantech Touchpad: Device: "/dev/input/event4"
  [  1367.403] (--) evdev: PS/2 Elantech Touchpad: Vendor 0x2 Product 0x1
  [  1367.403] (--) evdev: PS/2 Elantech Touchpad: Found 3 mouse buttons
  [  1367.403] (--) evdev: PS/2 Elantech Touchpad: Found relative axes
  [  1367.403] (--) evdev: PS/2 Elantech Touchpad: Found x and y relative axes
  [  1367.403] (II) evdev: PS/2 Elantech Touchpad: Configuring as mouse
  [  1367.404] (**) evdev: PS/2 Elantech Touchpad: YAxisMapping: buttons 4 and 5
  [  1367.404] (**) evdev: PS/2 Elantech Touchpad: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
  [  1367.404] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input5/event4"
  [  1367.404] (II) XINPUT: Adding extended input device "PS/2 Elantech Touchpad" (type: MOUSE, id 12)
  [  1367.404] (II) evdev: PS/2 Elantech Touchpad: initialized for relative axes.
  [  1367.404] (**) PS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1
  [  1367.404] (**) PS/2 Elantech Touchpad: (accel) acceleration profile 0
  [  1367.404] (**) PS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
  [  1367.404] (**) PS/2 Elantech Touchpad: (accel) acceleration threshold: 4
  [  1367.404] (II) config/udev: Adding input device PS/2 Elantech Touchpad (/dev/input/mouse0)
  [  1367.404] (II) No input driver specified, ignoring this device.
  [  1367.404] (II) This device may have been added with another device file.

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