Public bug reported:

I replaced my windows with ubuntu 20.04 and trackpad is not working
since. My laptop is Lenova Ideapad Slim 3 and I am attaching the output
of /proc/bus/input/devices below.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  krishna    1517 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Sep 12 13:11:04 2020
InstallationDate: Installed on 2020-09-08 (3 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 005: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
 Bus 001 Device 002: ID 174f:118d Syntek Integrated Camera
 Bus 001 Device 004: ID 8087:0aaa Intel Corp. 
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 81WE
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic 
root=UUID=a4ac015b-b298-4d65-88db-637a6ff6e74d ro quiet splash 
acpi_backlight=vendor vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-42-generic N/A
 linux-backports-modules-5.4.0-42-generic  N/A
 linux-firmware                            1.187.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/24/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: EMCN37WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0Q55722 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad 3 15IIL05
dmi.modalias: 
dmi:bvnLENOVO:bvrEMCN37WW:bd06/24/2020:svnLENOVO:pn81WE:pvrIdeaPad315IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0Q55722WIN:cvnLENOVO:ct10:cvrIdeaPad315IIL05:
dmi.product.family: IdeaPad 3 15IIL05
dmi.product.name: 81WE
dmi.product.sku: LENOVO_MT_81WE_BU_idea_FM_IdeaPad 3 15IIL05
dmi.product.version: IdeaPad 3 15IIL05
dmi.sys.vendor: LENOVO

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


** Tags: amd64 apport-bug focal

** Attachment added: "The output from /proc/bus/input/devices"
   https://bugs.launchpad.net/bugs/1895376/+attachment/5410056/+files/devices

** Summary changed:

- Trackpad not worrking when Ubuntu 20.04 installed
+ Trackpad not working when Ubuntu 20.04 installed

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https://bugs.launchpad.net/bugs/1895376

Title:
  Trackpad not working when Ubuntu 20.04 installed

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