Hey Just Bob. It may help if you indicate that the bug affects you in
the section above. May also help if you send Ubuntu bug info via apport.
Hopefully, we can raise the profile on this bug and get it fixed. Thx.
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https://bugs.launchpad.net/bugs/1658345

Title:
  Touchpad not recognized on Lenovo Ideapad Flex 4 running Ubuntu 16.10

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I installed Ubuntu 16.10 on my Lenovo Ideapad Flex 4 laptop. Ubuntu does not 
recognize the touchpad (it does recognize the touch screen nicely though). When 
I run xinput -list, I do not see the touchpad. I dual boot with Windows 10, 
which recognizes the touchpad from Elantech. I searched online for days and I 
found Elantech drivers for Ubuntu 14.04, however, I was unable to load older 
versions of Ubuntu on my laptop. Do you expect to support the Elantech touchpad 
in future updates? I attached a screen shot of my xinput -list output. Please 
let me know if you require any additional information. Thank you.
  --- 
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  keary      2345 F.... pulseaudio
  DistroRelease: Ubuntu 16.10
  HibernationDevice: RESUME=UUID=dbfec3b4-a8be-406e-9f39-5258c004c656
  InstallationDate: Installed on 2017-01-18 (2 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 0bda:57fc Realtek Semiconductor Corp. 
   Bus 001 Device 002: ID 0cf3:e500 Atheros Communications, Inc. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: LENOVO 80U3
  Package: linux (not installed)
  ProcEnviron:
   LANGUAGE=en_US
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-34-generic.efi.signed 
root=UUID=5be7438e-36fd-4960-a4cd-2371715adfa2 ro quiet splash i8042.kbdreset=1 
vt.handoff=7
  ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not 
accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.8.0-34-generic N/A
   linux-backports-modules-4.8.0-34-generic  N/A
   linux-firmware                            1.161.1
  Tags:  yakkety
  Uname: Linux 4.8.0-34-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/01/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 2MCN24WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Sofia-F
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J91204WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ideapad FLEX 4-1130
  dmi.modalias: 
dmi:bvnLENOVO:bvr2MCN24WW:bd11/01/2016:svnLENOVO:pn80U3:pvrLenovoideapadFLEX4-1130:rvnLENOVO:rnSofia-F:rvrSDK0J91204WIN:cvnLENOVO:ct10:cvrLenovoideapadFLEX4-1130:
  dmi.product.name: 80U3
  dmi.product.version: Lenovo ideapad FLEX 4-1130
  dmi.sys.vendor: LENOVO

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