My touchpad is not detected in ubuntu OS. `cat /proc/bus/input/devices` also shows no output for the touchpad.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-53-generic 5.4.0-53.59
ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: akshay 1658 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 22 15:03:41 2020
InstallationDate: Installed on 2020-08-25 (88 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 003: ID 04f2:b6ce Chicony Electronics Co., Ltd Integrated Camera
Bus 001 Device 002: ID 03f0:0941 HP, Inc X500 Optical Mouse
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-5.4.0-53-generic root=UUID=dec53f96-e538-474d-a3d1-01ba76844d85 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-53-generic N/A
linux-backports-modules-5.4.0-53-generic N/A
linux-firmware 1.187.4
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
Thank you for reporting this bug and make Ubuntu better!
Could you try to boot with secureboot disabled and update your system
to latest, aka kernel 5.4.0-54-generic and see if your issue still persist?