@pjf, thank you for reporting this and helping make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal: apport-collect 1594214
** Description changed: - 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. + On my Gigabyte P57W laptop the ETPS/2 Elantech touchpad is + inconsistently detected at boot. Trying 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. + WORKAROUND: Add kernel boot parameter: + i8042.kbdreset=1 - 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... - + 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)] + ↳ 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) ** Package changed: linux-lts-xenial (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1594214 Title: ETPS/2 Elantech Touchpad inconsistently detected (Gigabyte P57W laptop) Status in linux package in Ubuntu: Incomplete Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1594214/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
