Touchpad not working

[Félix]

The touchpad of my laptop sometimes doesn't work at all (from boot to halt). I am unable to determine when exactly this happens. The touchpad worked correctly on the live CD version of Ubuntu. My external USB mouse works correctly.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: felix 1402 F.... pulseaudio
 /dev/snd/controlC1: felix 1402 F.... pulseaudio
CurrentDesktop: GNOME
Date: Sat May 21 19:07:52 2016
HibernationDevice: RESUME=UUID=658879f1-ea6f-47c7-bd5f-bf6129ecf2f9
InstallationDate: Installed on 2016-05-21 (0 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421)
MachineType: GIGABYTE P25
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=639c5dff-dc4e-447d-97b5-75f5bd3befe8 ro quiet splash i8042.reset i8042.nomux i8042.nopnp i8042.noloop vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic N/A
 linux-firmware 1.157
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/12/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P25.30D
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P25
dmi.board.vendor: GIGABYTE
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP25.30D:bd11/12/2013:svnGIGABYTE:pnP25:pvrTobefilledbyO.E.M.:rvnGIGABYTE:rnP25:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: P25
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: GIGABYTE

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-yakkety

[Félix (feloose)]

I added the tag "kernel-bug-exists-upstream". To answer your questions:

(1) The problem has always existed - on Ubuntu 12.04, 14.04 and 16.04.
(2) The new kernel (4.6) doesn't appear to make any difference.

[penalvch (penalvch)]

Félix, could you please provide the full computer model as noted on the sticker of the computer itself (not from the Bug Description)?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Félix (feloose)]

The exact model is "P25K-W8", this one <http://www.gigabyte.fr/products/product-page.aspx?pid=4635>. Does this information suffice?

[penalvch (penalvch)]

Felix, thanks for that.

To keep this relevant to upstream, please continue to test the latest mainline kernel as it comes out (now 4.8-rc3). Could you please advise?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]