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[Bug 1594214] Re: ETPS/2 Elantech Touchpad inconsistently detected (Gigabyte P57W laptop)

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Andy Whitcroft <apw@xxxxxxxxxxxxx>
Date: Tue, 10 Oct 2017 12:07:11 -0000
Reply-to: Bug 1594214 <1594214@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1594214

Title:
  ETPS/2 Elantech Touchpad inconsistently detected (Gigabyte P57W
  laptop)

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  New
Status in linux source package in Zesty:
  Fix Committed

Bug description:
  SRU Justification

  [Impact]
  Touchpad on Gigabyte P57W laptop does not gets detected reliably.

  [Test Case]
  Touchpad not does not gets detected reliably.
  With the patch, it can get detected reliably.

  [Regression Potential]
  Minimal. The change limits to a single specific laptop.
  ---

  On my Gigabyte P57W laptop the ETPS/2 Elantech touchpad is
  inconsistently detected at boot. Trying mainline 4.6 kernel did not
  help.

  WORKAROUND: Add kernel boot parameter:
  i8042.kbdreset=1

  The device is id=17 on xinput below:
  $ xinput

  ⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
  ⎜   ↳ Kingsis Peripherals  Evoluent VerticalMouse 3 	id=12	[slave  pointer  (2)]
  ⎜   ↳ Sunrex/JME Ghost Key Elimiantion Keyboard	id=14	[slave  pointer  (2)]
  ⎜   ↳ ETPS/2 Elantech Touchpad                	id=17	[slave  pointer  (2)]
  ⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
      ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
      ↳ Power Button                            	id=6	[slave  keyboard (3)]
      ↳ Video Bus                               	id=7	[slave  keyboard (3)]
      ↳ Video Bus                               	id=8	[slave  keyboard (3)]
      ↳ Sleep Button                            	id=9	[slave  keyboard (3)]
      ↳ Power Button                            	id=10	[slave  keyboard (3)]
      ↳ Sleep Button                            	id=11	[slave  keyboard (3)]
      ↳ Sunrex/JME Ghost Key Elimiantion Keyboard	id=13	[slave  keyboard (3)]
      ↳ Chicony USB 2.0 Camera                  	id=15	[slave  keyboard (3)]
      ↳ AT Translated Set 2 keyboard            	id=16	[slave  keyboard (3)]

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-4.4.0-24-generic 4.4.0-24.43~14.04.1
  ProcVersionSignature: Ubuntu 4.4.0-24.43~14.04.1-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  Date: Mon Jun 20 10:56:33 2016
  InstallationDate: Installed on 2014-05-20 (761 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  SourcePackage: linux-lts-xenial
  UpgradeStatus: No upgrade log present (probably fresh install)

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