Touchpad not working on Lenovo S145 @ Ubuntu 22.04

[Matheus Müller]

My touchpad is not working. I typed "cat /proc/bus/input/devices | grep -i touchpad" on the terminal, and it returned nothing. My computer is a Lenovo IdeaPad S145.

This issue has been related recently by other users on Ask Ubuntu and Launchpad:

  * https://askubuntu.com/questions/1404549/lenovo-ideapad-s145-touchpad-not-working-on-22-04
  * https://askubuntu.com/questions/1404820/failed-to-boot-after-upgrade-20-04-to-22-04-lenovo-ideapad-3
  * https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970056

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-27-generic 5.15.0-27.28
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mpds 1301 F.... pulseaudio
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Apr 27 23:39:54 2022
InstallationDate: Installed on 2022-04-28 (0 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 174f:1176 Syntek Integrated Camera
 Bus 001 Device 004: ID 0cf3:e500 Qualcomm Atheros Communications
 Bus 001 Device 002: ID 046d:c542 Logitech, Inc. Wireless Receiver
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 82DJ
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-27-generic root=UUID=3eaea9a9-683e-4c1c-af95-b4d918236d1a ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.15.0-27-generic N/A
 linux-backports-modules-5.15.0-27-generic N/A
 linux-firmware 20220329.git681281e4-0ubuntu1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/31/2021
dmi.bios.release: 1.53
dmi.bios.vendor: LENOVO
dmi.bios.version: DKCN53WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40679 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad S145-15IIL
dmi.ec.firmware.release: 1.53
dmi.modalias: dmi:bvnLENOVO:bvrDKCN53WW:bd05/31/2021:br1.53:efr1.53:svnLENOVO:pn82DJ:pvrLenovoIdeaPadS145-15IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40679WIN:cvnLENOVO:ct10:cvrLenovoIdeaPadS145-15IIL:skuLENOVO_MT_82DJ_BU_idea_FM_IdeaPadS145-15IIL:
dmi.product.family: IdeaPad S145-15IIL
dmi.product.name: 82DJ
dmi.product.sku: LENOVO_MT_82DJ_BU_idea_FM_IdeaPad S145-15IIL
dmi.product.version: Lenovo IdeaPad S145-15IIL
dmi.sys.vendor: LENOVO

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Matheus Müller (matheusmuller)]

Solved the problem by updating manually to the latest mainline kernel (5.18.3) and following these instructions: https://askubuntu.com/a/1276453/1490063