Lenovo ThinkBook 14-IML Touchpad not showing up in /proc/bus/input/devices

[Frederick Bojango]

Exactly the same issue as #1853277, in Groovy (5.8.0-22-generic #23-Ubuntu) but was advised to report a new bug.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: linux-image-5.8.0-22-generic 5.8.0-22.23
ProcVersionSignature: Ubuntu 5.8.0-22.23-generic 5.8.14
Uname: Linux 5.8.0-22-generic x86_64
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tim 2131 F.... pulseaudio
 /dev/snd/controlC1: tim 2131 F.... pulseaudio
CasperMD5CheckResult: skip
Date: Wed Oct 14 13:15:38 2020
InstallationDate: Installed on 2020-06-03 (132 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 20RV
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-22-generic root=UUID=21f0ab04-8421-49d1-8ad3-39fea6ea8a74 ro rootflags=subvol=@ quiet splash i8042.nopnp=1 pci=nocrs vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-5.8.0-22-generic N/A
 linux-backports-modules-5.8.0-22-generic N/A
 linux-firmware 1.190
SourcePackage: linux
UpgradeStatus: Upgraded to groovy on 2020-10-14 (0 days ago)
dmi.bios.date: 06/19/2020
dmi.bios.release: 1.29
dmi.bios.vendor: LENOVO
dmi.bios.version: CJCN29WW
dmi.board.name: LVA/LVAB
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.ec.firmware.release: 1.31
dmi.modalias: dmi:bvnLENOVO:bvrCJCN29WW:bd06/19/2020:br1.29:efr1.31:svnLENOVO:pn20RV:pvrLenovoThinkBook14-IML:rvnLENOVO:rnLVA/LVAB:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvr:
dmi.product.family: Lenovo ThinkBook 14-IML
dmi.product.name: 20RV
dmi.product.sku: LENOVO_MT_20RV_BU_idea_FM_Lenovo ThinkBook 14-IML
dmi.product.version: Lenovo ThinkBook 14-IML
dmi.sys.vendor: LENOVO

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Please remove "i8042.nopnp=1 pci=nocrs" and see if it helps, thanks!

[Frederick Bojango (eej6eeghie5eiyec4ie8puetahw4ew3i)]

OK removed those from /etc/default/grub, ran update-grub, rebooted

[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.8.0-22-generic root=UUID=21f0ab04-8421-49d1-8ad3-39fea6ea8a74 ro rootflags=subvol=@ quiet splash vt.handoff=7

same problem

[Kai-Heng Feng (kaihengfeng)]

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

[Frederick Bojango (eej6eeghie5eiyec4ie8puetahw4ew3i)]

same problem with latest mainline

Linux x 5.9.0-050900-generic #202010112230 SMP Sun Oct 11 22:34:01 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

[Kai-Heng Feng (kaihengfeng)]

Ok, can you please test this patch:
https://<email address hidden>/

[Nishant (nishant-no2)]

Hi, we have two machines at the office with this issue and I don't have access to either of them. I think the patch landed in the upstream kernel v5.4.73. When can we expect the fix for Focal through the updates?

[surya (surya630)]

Hi, I tried all the mentioned kernels on my lenovo ideapad gaming 3 and I can see the touchpad in devices list but none of the solution worked even the one in the previous thread too.

[surya (surya630)]

It didn't work initially. But on building kernel with a patch given, it started working fine.

https://launchpadlibrarian.net/500948605/0303-pinctrl-amd2.patch

Thanks for your supports.