@AdrienM, so you can decompile your ACPI blob shipped by the device
vendor:
$ acpixtract acpi.dump
$ iasl -d *.dat
And from the decompiled `dsdt.dsl` file, it has:
Name (_HID, "XXXX0000") // _HID: Hardware ID
Name (_CID, "PNP0C50" /* HID Protocol Device (I2C bus) */) // _CID:
Compatible ID
...
I'm not sure what will it be like in the runtime, so we need your to
run:
$ cd /sys/bus/acpi/devices
$ for d in $(ls -1 */hid); do d=${d%/*}; grep -q PNP0C50 $d/modalias && echo
$d; done
And, please re-attach your dmesg log with following kernel boot
parameters. For detailed steps, please see
https://askubuntu.com/questions/19486/how-do-i-add-a-kernel-boot-
parameter:
dyndbg="file drivers/hid/* +pt" i2c-hid.debug=1 log_buf_len=16M
** Attachment added: "dsdt.dsl"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1878279/+attachment/5371900/+files/dsdt.dsl
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1878279
Title:
Touchpad not recognized on Lenovo Ideapad 5 14IIL05 81YH
Status in linux package in Ubuntu:
Incomplete
Status in linux package in Debian:
New
Bug description:
Touchpad 'Buttonless Mylar surface multi-touch touchpad' doesn't work
at all (No response from the Touchpad) for notebook 'Lenovo Ideapad 5
14IIL05 81YH' from first system start on.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-29-generic 5.4.0-29.33
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: tilman 1607 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue May 12 21:22:22 2020
InstallationDate: Installed on 2020-05-12 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 81YH
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-5.4.0-29-generic
root=UUID=bb961a96-8855-4e50-814d-7994235377c3 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-29-generic N/A
linux-backports-modules-5.4.0-29-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/25/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: DSCN23WW(V1.09)
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 14IIL05
dmi.modalias:
dmi:bvnLENOVO:bvrDSCN23WW(V1.09):bd03/25/2020:svnLENOVO:pn81YH:pvrIdeaPad514IIL05:rvnLENOVO:rnLNVNB161216:rvrNoDPK:cvnLENOVO:ct10:cvrIdeaPad514IIL05:
dmi.product.family: IdeaPad 5 14IIL05
dmi.product.name: 81YH
dmi.product.sku: LENOVO_MT_81YH_BU_idea_FM_IdeaPad 5 14IIL05
dmi.product.version: IdeaPad 5 14IIL05
dmi.sys.vendor: LENOVO
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