Lenovo G500 Intel i3 Laptop keyboard and touchpad not working after installing Ubuntu 20.04

[Aman Ghrera]

Lenovo G500 Intel i3 Laptop keyboard and touchpad not working after installing Ubuntu 20.04
It works fine in the Live USB but after installing the OS, the keyboard and touchpad stops working.
The laptop has Synaptic Touchpad I believe.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.11.0-43-generic 5.11.0-43.47~20.04.2
ProcVersionSignature: Ubuntu 5.11.0-43.47~20.04.2-generic 5.11.22
Uname: Linux 5.11.0-43-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Dec 29 03:55:55 2021
InstallationDate: Installed on 2021-12-29 (0 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.11
UpgradeStatus: No upgrade log present (probably fresh install)