Somehow you've got two modules to be loaded simultaneously:

elan_i2c               40960  0
[...]
synaptics_i2c          20480  0

dmesg mentions ELAN0632:

[    9.706424] i2c_hid i2c-ELAN0632:00: i2c-ELAN0632:00 supply vdd not found, 
using dummy regulator
[    9.706437] i2c_hid i2c-ELAN0632:00: i2c-ELAN0632:00 supply vddl not found, 
using dummy regulator

but I didn't find SYNA2B60


It is not relevant to the bug, but your laptop also has one more ELAN device on 
USB bus (fingerprint sensor)

[    1.492202] usb 1-5: new full-speed USB device number 2 using xhci_hcd
[    1.644710] usb 1-5: New USB device found, idVendor=04f3, idProduct=0c4b, 
bcdDevice= 1.74
[    1.644711] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    1.644712] usb 1-5: Product: ELAN:Fingerprint
[    1.644713] usb 1-5: Manufacturer: ELAN

So would you please share your logs for:
dmidecode
cat /sys/bus/acpi/devices/{ELAN,SYNA,CRQ}*/modalias
cat /sys/bus/acpi/devices/{ELAN,SYNA,CRQ}*/status

cat /sys/bus/i2c/devices/*/name
ls /sys/bus/i2c/devices/*

Could you also check VID/PID pair for your touchpad in Windows to check
whether it is supported by the kernel you are using?

You may want to build latest stable or even mainline kernel for test
purposes...

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1853277

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

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  This is happening on a ThinkBook 14 IML 20RV.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: linux-image-5.3.0-18-generic 5.3.0-18.19+1
  ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
  Uname: Linux 5.3.0-18-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1848 F.... pulseaudio
  CasperVersion: 1.427
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Nov 20 11:10:52 2019
  LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  MachineType: LENOVO 20RV
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz 
file=/cdrom/preseed/username.seed quiet splash ---
  RelatedPackageVersions:
   linux-restricted-modules-5.3.0-18-generic N/A
   linux-backports-modules-5.3.0-18-generic  N/A
   linux-firmware                            1.183
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/10/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: CJCN21WW
  dmi.board.name: LVA/LVAB
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.modalias: 
dmi:bvnLENOVO:bvrCJCN21WW:bd10/10/2019:svnLENOVO:pn20RV:pvrLenovoThinkBook14-IML:rvnLENOVO:rnLVA/LVAB:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvr:
  dmi.product.family: ThinkBook 14-IML
  dmi.product.name: 20RV
  dmi.product.sku: LENOVO_MT_20RV_BU_idea_FM_ThinkBook 14-IML
  dmi.product.version: Lenovo ThinkBook 14-IML
  dmi.sys.vendor: LENOVO

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