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

Bug #1899776 reported by Frederick Bojango on 2020-10-14
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

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
 /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
 PATH=(custom, no user)
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.
 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

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Kai-Heng Feng (kaihengfeng) wrote :

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

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) wrote :

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) wrote :

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

Nishant (nishant-no2) wrote :

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?

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