Public bug reported:

I followed this

In case your Touchpad doesn't work at all (No response from the
Touchpad)

This is generally a case of a kernel (linux) or xorg bug.

    Execute at a terminal:

    cat /proc/bus/input/devices

    One should see a touchpad device, like:

    I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
    N: Name="SynPS/2 Synaptics TouchPad"
    P: Phys=isa0060/serio2/input0
    S: Sysfs=/devices/platform/i8042/serio2/input/input8
    U: Uniq=
    H: Handlers=mouse2 event8
    B: EV=b
    B: KEY=420 0 70000 0 0 0 0 0 0 0 0
    B: ABS=11000003 

    If you do not find something like this, then the bug is in the linux
kernel. Please follow these steps:

        File the bug against the linux package by running ubuntu-bug
linux.

        Provide the general information.

        Enter the following commands in a terminal:

        cat /proc/bus/input/devices > ~/devices

        Attach ~/devices as separate attachments to your bug report.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-72-generic 4.15.0-72.81
ProcVersionSignature: Ubuntu 4.15.0-72.81-generic 4.15.18
Uname: Linux 4.15.0-72-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  efalabrini   1968 F.... pulseaudio
CurrentDesktop: MATE
Date: Mon Dec 16 22:59:30 2019
HibernationDevice: RESUME=UUID=78dee4f0-4177-42a3-9e3a-18c5562142a9
InstallationDate: Installed on 2016-08-11 (1222 days ago)
InstallationMedia: Ubuntu-MATE 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
MachineType: Dell Inc. Inspiron 11-3157
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic 
root=UUID=695e60b3-8b9c-4d3c-8646-9f5dbd9323fb ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-72-generic N/A
 linux-backports-modules-4.15.0-72-generic  N/A
 linux-firmware                             1.173.13
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/29/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.13
dmi.board.name: 0C9N4H
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: 
dmi:bvnDellInc.:bvr1.1.13:bd07/29/2015:svnDellInc.:pnInspiron11-3157:pvr1.1.13:rvnDellInc.:rn0C9N4H:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: Inspiron 11-3157
dmi.product.version: 1.1.13
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

** Attachment added: "devices"
   https://bugs.launchpad.net/bugs/1856633/+attachment/5313113/+files/devices

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https://bugs.launchpad.net/bugs/1856633

Title:
  My touchpad stop working

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