Touchpad not detected on Ideapad 14ARE05

[Bucur Loredan]

Laptop: Lenovo Ideapad 5-14ARE05 Laptop - Type 81YM - AMD Ryzen 7 4700U

Description: Ubuntu 20.10
Release: 20.10

Linux leptovo 5.8.0-43-generic #49-Ubuntu SMP Fri Feb 5 03:01:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Also tested with:
Linux leptovo 5.11.0-051100-generic #202102142330 SMP Sun Feb 14 23:33:21 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux - and other kernels.

Hello! After updating the BIOS from 1.06 to 1.10 the touchpad is not recognised anymore. It was working fine with 5.9.12 (updated the version with Ukuu), but now it does not respons with any verion tried by me: 5.8.0.43 / 5.9.16 / 5.10.17 / 5.11.0.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC3: lebucur 1295 F.... pulseaudio
 /dev/snd/controlC1: lebucur 1295 F.... pulseaudio
 /dev/snd/controlC0: lebucur 1295 F.... pulseaudio
 /dev/snd/controlC2: lebucur 1295 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.10
InstallationDate: Installed on 2020-10-06 (137 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: LENOVO 81YM
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-43-generic root=UUID=708db822-7208-4b47-8329-20d5cc13db11 ro quiet splash mem_sleep_default=deep vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-43.49-generic 5.8.18
RelatedPackageVersions:
 linux-restricted-modules-5.8.0-43-generic N/A
 linux-backports-modules-5.8.0-43-generic N/A
 linux-firmware 1.190.3
Tags: groovy
Uname: Linux 5.8.0-43-generic x86_64
UpgradeStatus: Upgraded to groovy on 2020-10-23 (120 days ago)
UserGroups: adm cdrom dip i2c input lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/25/2020
dmi.bios.release: 1.24
dmi.bios.vendor: LENOVO
dmi.bios.version: DTCN24WW(V1.10)
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: No DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad 5 14ARE05
dmi.ec.firmware.release: 1.24
dmi.modalias: dmi:bvnLENOVO:bvrDTCN24WW(V1.10):bd12/25/2020:br1.24:efr1.24:svnLENOVO:pn81YM:pvrIdeaPad514ARE05:rvnLENOVO:rnLNVNB161216:rvrNoDPK:cvnLENOVO:ct10:cvrIdeaPad514ARE05:
dmi.product.family: IdeaPad 5 14ARE05
dmi.product.name: 81YM
dmi.product.sku: LENOVO_MT_81YM_BU_idea_FM_IdeaPad 5 14ARE05
dmi.product.version: IdeaPad 5 14ARE05
dmi.sys.vendor: LENOVO

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1916064/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

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

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1916064

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Bucur Loredan (lebucur)]

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[Oscar Parada (oparada1988)]

Can verify this is also effecting my laptop.

[Oscar Parada (oparada1988)]

The following workaround per Bug #1881319 Comment #32 does not work on fresh installation of Ubuntu 20.04 with 5.8.55

Edit /etc/default/grub file line to below:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash initcall_blacklist=elants_i2c_driver_init"

$ sudo update-grub

reboot