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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1860910

Title:
   ELAN Touchpad not working on Lenovo Thinkbook with Ubuntu 18.04 and
  19.10

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I bought a Lenovo Thinkbook (Intel i5 10th generation) Model- 20RV00BNIH just 
last week. I bought a DOS machine and put ubuntu 18.04 on it, the touchpad 
hasnt been working ever since.
  I checked with Win 10, and the touchpad works, so it is not a hardware issue.
  Then I upgraded to ubuntu 19.10.
  Kernel is 5.3.0-26-generic #28-Ubuntu SMP

  Lots of posts on ubuntuforums indicate that 18.10 onwards should fix
  this issue. They also claim that Kernel 4.18 onwards should fix this
  issue, but looks like they dont, at least for me.

  I tried the following. Did not help.
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1825996
  edit /etc/modprobe.d/blacklist.conf
  add "blacklist i2c_i801" in the blacklist.conf
  sudo update-initramfs -u
  reboot

  When I do a sudo acpidump | grep -C3 ELAN, I get the following

  33230: 0F 00 03 04 49 4E 54 31 70 0A 20 49 44 41 44 A4 ....INT1p. IDAD.
   33240: 84 53 42 46 53 53 42 46 49 00 5B 82 4D 0D 54 50 .SBFSSBFI.[.M.TP
   33250: 44 32 08 5F 41 44 52 00 08 49 44 41 44 00 08 48 D2._ADR..IDAD..H
   33260: 49 44 32 00 08 5F 48 49 44 0D 45 4C 41 4E 30 36 ID2.._HID.ELAN06
   33270: 32 46 00 08 5F 43 49 44 0D 50 4E 50 30 43 35 30 2F.._CID.PNP0C50
   33280: 00 08 5F 55 49 44 01 14 46 04 5F 44 53 4D 04 A0 .._UID..F._DSM..
   33290: 37 93 68 11 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 7.h.......<gBUE

  dmesg | grep -i elan --> yields nothing.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: linux-image-5.3.0-26-generic 5.3.0-26.28
  ProcVersionSignature: Ubuntu 5.3.0-26.28-generic 5.3.13
  Uname: Linux 5.3.0-26-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nanditha   1320 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jan 26 17:48:17 2020
  InstallationDate: Installed on 2020-01-25 (0 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  MachineType: LENOVO 20RV
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-26-generic 
root=UUID=1bd35570-763f-4f7e-ae06-6b141cfb7a44 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.3.0-26-generic N/A
   linux-backports-modules-5.3.0-26-generic  N/A
   linux-firmware                            1.183.3
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/23/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: CJCN22WW
  dmi.board.name: LVA/LVAB
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.modalias: 
dmi:bvnLENOVO:bvrCJCN22WW:bd10/23/2019:svnLENOVO:pn20RV:pvrLenovoThinkBook14-IML:rvnLENOVO:rnLVA/LVAB:rvrNODPK: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

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