TouchPad not working

[Naman Singhal]

I have a DELL 5547 laptop. I have dual OS: Ubuntu 14.04 and Windows 8.1. In Ubuntu the TouchPad is not working although an external mouse is working well. The touchpad is working in windows.
Help me fix this.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-74-generic 3.13.0-74.118
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: nmcsk 1892 F.... pulseaudio
 /dev/snd/controlC0: nmcsk 1892 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Jan 16 16:05:50 2016
HibernationDevice: RESUME=UUID=f0aa5b0e-d5cf-4def-8347-06c0c8d478f7
InstallationDate: Installed on 2016-01-03 (12 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. Inspiron 5547
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-74-generic.efi.signed root=UUID=72aa1fd6-3fb4-4e4d-a00e-5e2b7e74a5e8 ro i8042.reset quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-74-generic N/A
 linux-backports-modules-3.13.0-74-generic N/A
 linux-firmware 1.127.19
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/23/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 06X5CY
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A07
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/23/2015:svnDellInc.:pnInspiron5547:pvrA07:rvnDellInc.:rn06X5CY:rvrA00:cvnDellInc.:ct8:cvrA07:
dmi.product.name: Inspiron 5547
dmi.product.version: A07
dmi.sys.vendor: Dell Inc.

[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 v4.4 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/v4.4-wily

[Launchpad Janitor (janitor)]

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