touchpad suddenly stopped working in 22.04

[Divyajyoti]

I upgraded to Ubuntu 22.04 and after a week or two of usage, my laptop touchpad has stopped working suddenly. I have tried changing the kernels (I tried 6 or 7 different kernels) but it is not resolving the issue.

Touchpad does not show in /proc/bus/input/devices.

Laptop: Lenovo YOGA 520-14IKB
Description: Ubuntu 22.04.2 LTS
Release: 22.04

xserver-xorg-input-libinput:
  Installed: 1.2.1-1
  Candidate: 1.2.1-1
  Version table:
 *** 1.2.1-1 500
        500 http://in.archive.ubuntu.com/ubuntu jammy/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xserver-xorg-input-libinput 1.2.1-1
Uname: Linux 6.3.0-060300-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.4
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 29 14:30:16 2023
DistUpgraded: Fresh install
DistroCodename: jammy
DistroVariant: ubuntu
InstallationDate: Installed on 2023-03-24 (35 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
MachineType: LENOVO 81C8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.3.0-060300-generic root=UUID=b42be5cf-69f9-4a86-8689-67e955802248 ro quiet splash vt.handoff=7
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: xserver-xorg-input-libinput
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/14/2019
dmi.bios.release: 2.50
dmi.bios.vendor: LENOVO
dmi.bios.version: 4QCN50WW(V2.14)
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: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo YOGA 520-14IKB
dmi.ec.firmware.release: 2.50
dmi.modalias: dmi:bvnLENOVO:bvr4QCN50WW(V2.14):bd05/14/2019:br2.50:efr2.50:svnLENOVO:pn81C8:pvrLenovoYOGA520-14IKB:rvnLENOVO:rnLNVNB161216:rvrSDK0Q55722WIN:cvnLENOVO:ct31:cvrLenovoYOGA520-14IKB:skuLENOVO_MT_81C8_BU_idea_FM_YOGA520-14IKB:
dmi.product.family: YOGA 520-14IKB
dmi.product.name: 81C8
dmi.product.sku: LENOVO_MT_81C8_BU_idea_FM_YOGA 520-14IKB
dmi.product.version: Lenovo YOGA 520-14IKB
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 22.2.5-0ubuntu0.1~22.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 22.2.5-0ubuntu0.1~22.04.1
version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1