Touchpad not detected

[Shaokang Wang]

Lenovo IdeaPad 3 15" Laptop, Intel Core i3-1005G1 Dual-Core Processor, 8GB Memory, 256GB Solid State Drive, Windows 10S - Abyss Blue - 81WE008HUS

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: 2.20.11-0ubuntu27.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: skjwang 1501 F.... pulseaudio
 /dev/snd/controlC1: skjwang 1501 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: Unity:Unity7:ubuntu
Date: Wed Aug 12 19:53:05 2020
InstallationDate: Installed on 2020-07-25 (18 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200402)
MachineType: LENOVO 81WE
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=89459a6c-37b1-4aa8-8399-dad2021b4422 ro i8042.reset quiet splash 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: 05/29/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: EMCN36WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0R32866 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:bvrEMCN36WW:bd05/29/2020:svnLENOVO:pn81WE:pvrIdeaPad315IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0R32866WIN: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

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Can you please add kernel parameter "i2c_hid.debug=1" and attach dmesg here?

[Shaokang Wang (djwangsk)]

Thanks Kai-Heng.

I added the text "i2c_hid.debug=1" to the line "GRUB_CMDLINE_LINUX_DEFAULT" of /etc/default/grub.

Attached is the dmesg output.

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.9-rc3/amd64/

Somehow i2c-hid doesn't probe the device...

[Kaushik (kk1618)]

This looks related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1902154 since the 2 laptop models are nearly identical.