Comment 0 for bug 1594214

On my Gigabyte P57W laptop (and possibly others, see: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526393 ) my ETPS/2 Elantech touchpad is inconsistently detected at boot. Sometimes it's there, sometimes it's not, and I'm not sure of the circumstances which cause it to be detected or not. I'm on a 4.4 kernel, but trying a mainline 4.6 kernel did not help.

Luckily, after trawling the internet ( http://askubuntu.com/questions/636350/elantech-touchpad-not-detected-anymore-on-ubuntu-15 ) I found that adding `i8042.kbdreset=1` to `GRUB_CMDLINE_LINUX_DEFAULT` in /etc/default/grub resolves the problem.

The device is id=17 on xinput below. I *would* be running `lspci`, but my hardware is new enough that causes my machine to hang sometimes, but that's another bug...

$ 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)