I added the following line to my /etc/default/grub  file and updated grub
and my touchpad is now working.

GRUB_CMDLINE_LINUX="i8042.nopnp=1 pci=nocrs"

Lalitha Prasad

On Wed, Dec 9, 2020 at 7:45 AM Daniel van Vugt <email address hidden>
wrote:

> ** Changed in: linux (Ubuntu)
>        Status: Incomplete => Confirmed
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1896088).
> https://bugs.launchpad.net/bugs/1884997
>
> Title:
>   [Lenovo IdeaPad 3 15IIL05] no touchpad detected, not working at all
>
> Status in linux package in Ubuntu:
>   Confirmed
>
> Bug description:
>   hello,
>
>   i bought a new pc and installed ubuntu 20.04 and windows 10 on it.
>   on ubuntu os my touchpad doesn't work at all, since installation process
> but it does on windows.
>   the pc is a lenovo pc and one of the latest released one.
>
>   when i plug in a usb mouse the mouse works fine but the touchpad still
> don't.
>   it even doesn't show the touchpad when i type in (1) "cat
> /proc/bus/input/devices".
>   only the usb mouse twice.
>
>   i tryed a lot and don't know how to help myself any further.
>
>   i attached a file "devices" where printed my output of (1).
>
>   thanks for any help.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: linux-image-5.4.0-37-generic 5.4.0-37.41
>   ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
>   Uname: Linux 5.4.0-37-generic x86_64
>   ApportVersion: 2.20.11-0ubuntu27
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  fabian     1032 F.... pulseaudio
>    /dev/snd/pcmC0D0p:   fabian     1032 F...m pulseaudio
>   CasperMD5CheckResult: skip
>   CurrentDesktop: ubuntu:GNOME
>   Date: Wed Jun 24 18:21:17 2020
>   InstallationDate: Installed on 2020-06-17 (6 days ago)
>   InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64
> (20200423)
>   MachineType: LENOVO 81WE
>   ProcEnviron:
>    TERM=xterm-256color
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=de_DE.UTF-8
>    SHELL=/bin/bash
>   ProcFB: 0 i915drmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic
> root=UUID=a65a602e-ae73-4354-94f9-2f99e2bff055 ro i8042.reset quiet splash
> vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-5.4.0-37-generic N/A
>    linux-backports-modules-5.4.0-37-generic  N/A
>    linux-firmware                            1.187
>   SourcePackage: linux
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 03/06/2020
>   dmi.bios.vendor: LENOVO
>   dmi.bios.version: EMCN13WW
>   dmi.board.asset.tag: NO Asset Tag
>   dmi.board.name: LNVNB161216
>   dmi.board.vendor: LENOVO
>   dmi.board.version: SDK0J40700 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:bvrEMCN13WW:bd03/06/2020:svnLENOVO:pn81WE:pvrIdeaPad315IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40700WIN: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
>
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>