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[Launchpad Bug Tracker <1439111@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.19.0-37.42

---------------
linux (3.19.0-37.42) vivid; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1518406

  [ K. Y. Srinivasan ]

  * SAUCE: Drivers: hv: vmbus: Fix a Host signaling bug
    - LP: #1508706

 -- Kamal Mostafa <kamal@xxxxxxxxxxxxx>  Fri, 20 Nov 2015 09:49:10 -0800

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https://bugs.launchpad.net/bugs/1439111

Title:
  Enable full touch support for ELAN0600 touchpad

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Vivid:
  Fix Released
Status in linux source package in Wily:
  Fix Committed

Bug description:
  Hi,

  ELAN0600 lacks full touch support if not registered with elan_i2c.ko.
  I've got in touch with Benjamin Tissoires, who kindly provided me with a two-lines patch that fixed the problem for my Lenovo Yoga 3 11 [1]. He has afterwards made the patch publicly available at LKML [2].

  
  Some more information follow, the bug is still reproducible with the latest Vivid's and mainline kernels:

  ubuntu@ubuntu:~$ uname -a
  Linux ubuntu 3.16.0-23-generic #31-Ubuntu SMP Tue Oct 21 17:56:17 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
  ubuntu@ubuntu:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 14.10
  Release:	14.10
  Codename:	utopic

  
  ubuntu@ubuntu:~$ lsusb
  Bus 001 Device 002: ID 8087:8001 Intel Corp.
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 002 Device 006: ID 8087:07dc Intel Corp.
  Bus 002 Device 005: ID 1bcf:2c43 Sunplus Innovation Technology Inc.
  Bus 002 Device 004: ID 04f3:2052 Elan Microelectronics Corp.
  Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
  Bus 002 Device 002: ID 058f:6387 Alcor Micro Corp. Flash Drive
  Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

  Excerpt of /proc/bus/input/devices:

  I: Bus=0018 Vendor=04f3 Product=0400 Version=0100
  N: Name="ELAN0600:00 04F3:0400"
  P: Phys=
  S: Sysfs=/devices/pci0000:00/INT3433:00/i2c-8/i2c-ELAN0600:00/0018:04F3:0400.0003/input/input13
  U: Uniq=
  H: Handlers=mouse1 event12
  B: PROP=0
  B: EV=17
  B: KEY=30000 0 0 0 0
  B: REL=143
  B: MSC=10

  
  ubuntu@ubuntu:~$ grep -i elan /var/log/syslog
  Feb 17 01:53:37 ubuntu kernel: [ 17.373586] usb 2-5: Manufacturer: ELAN
  Feb 17 01:53:38 ubuntu kernel: [ 28.061105] input: ELAN Touchscreen as /devices/pci0000:00/0000:00:14.0/usb2/2-5/2-5:1.0/0003:04F3:2052.0001/input/input11
  Feb 17 01:53:38 ubuntu kernel: [ 28.067747] hid-multitouch 0003:04F3:2052.0001: input,hiddev0,hidraw0: USB HID v1.10 Device [ELAN Touchscreen] on usb-0000:00:14.0-5/input0
  Feb 17 01:53:38 ubuntu kernel: [ 28.272108] i2c_hid i2c-ELAN0600:00: error in i2c_hid_init_report size:633 / ret_size:7
  Feb 17 01:53:38 ubuntu kernel: [ 28.274418] i2c_hid i2c-ELAN0600:00: error in i2c_hid_init_report size:69 / ret_size:7
  Feb 17 01:53:38 ubuntu kernel: [ 28.274589] input: ELAN0600:00 04F3:0400 as /devices/pci0000:00/INT3433:00/i2c-8/i2c-ELAN0600:00/0018:04F3:0400.0003/input/input13
  Feb 17 01:53:38 ubuntu kernel: [ 28.275039] hid-generic 0018:04F3:0400.0003: input,hidraw1: <UNKNOWN> HID v1.00 Mouse [ELAN0600:00 04F3:0400] on

  
  Thanks for considering.

  
  [1] http://shop.lenovo.com/gb/en/laptops/lenovo/yoga/yoga-3-11/
  [2] https://lkml.org/lkml/2015/3/31/929

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