Public bug reported: 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) ** Affects: linux-lts-xenial (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug third-party-packages trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1594214 Title: ETPS/2 Elantech Touchpad inconsistently detected (Gigabyte P57W laptop) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-xenial/+bug/1594214/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
