Hello guys another update from me. I saw that tjis thread is shared
across multiple distro forums and because I tested 4 I would like to
post it here for feuture reference.

Ubuntu - working but with grub parametres from comment #96, sadly no
gestures are available (nor will be by libinput and touchpad-gestures
library because they just can't reckognize them)

Mint - same as linux

Redhat - working but clicks are inverted for me lol (nothing on settings
can chnage it but I guess that you can change it somehow tbh didnt want
to bother with it)

Kali - same as ubuntu but the touchpad is VEEERY snesitive and
everything will trigger touch, multiple times while i was writing
something i was iterulted by a click and this cannot be changed. For
some reason ubuntu is better. Also it cant support gestures only click
and pointera. I got in contact with libinput creator and after some
testibg we realised that it can onky capture point devices and click
events, nothing multitouch. Also every gestures on xinputlist are
displayed as n/a

Arch - My biggest surprise and I was so happy to boot it on arch because
it works flawlessly. Not only that touchpad works (with hack) buz the
gestures of scrolling got automatically reckognized, i tried as much as
i can to trigger accidental clicks but couldnt do it, only thing is that
it comes with touch to click disabled which was a quick fix.I think that
it is compatible with libinput or other gestures because its reckongized
as ELAN not just pointer device. This will be my main distro on this
laptop.

Hope that this was helpfull i'll also link other newer lenovo devices
that I test so that this problem does not limit to thinkbooks. Again
this is just my experience for you it might be different.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1861610

Title:
  'Elan touchpad' not detected on 'Lenovo ThinkBook 15 IIL'

Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-5.6 package in Ubuntu:
  Fix Released
Status in linux-oem-osp1 package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  Fix Released
Status in linux-oem-5.6 source package in Bionic:
  Invalid
Status in linux-oem-osp1 source package in Bionic:
  Fix Released
Status in linux source package in Eoan:
  Fix Released
Status in linux-oem-5.6 source package in Eoan:
  Invalid
Status in linux-oem-osp1 source package in Eoan:
  Fix Released
Status in linux source package in Focal:
  Fix Released
Status in linux-oem-5.6 source package in Focal:
  Fix Released
Status in linux-oem-osp1 source package in Focal:
  Invalid

Bug description:
  [SRU Justification]

  [Impact]
  Touchpad function unavailable on some platforms with new ELAN touchpad
  HIDs.

  [Fix]
  
https://lore.kernel.org/linux-input/000201d5a8bd$9fead3f0$dfc07bd0$@emc.com.tw/
  required to match these currently unsupported IDs.

  [Test Case]
  1. check if platform is affected, e.g. with ELAN0634:

     $ sudo acpidump | grep -C3 ELAN
     2A060: 49 4E 54 31 70 0A 20 49 44 41 44 A4 84 53 42 46 INT1p.IDAD..SBF
     2A070: 53 53 42 46 49 00 5B 82 42 0E 54 50 44 32 08 5F SSBFI.[.B.TPD2._
     2A080: 41 44 52 00 08 49 44 41 44 00 08 48 49 44 32 00 ADR..IDAD..HID2.
     2A090: 08 5F 48 49 44 0D 45 4C 41 4E 30 36 33 34 00 08 ._HID.ELAN0634..
     2A0A0: 5F 43 49 44 0D 50 4E 50 30 43 35 30 00 08 5F 55 _CID.PNP0C50.._U
     2A0B0: 49 44 01 14 4B 04 5F 44 53 4D 04 A0 3C 93 68 11 ID..K._DSM..<.h.
     2A0C0: 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 05 B3 0A 3D ......<gBUE....=

  2. check if touchpad then appear in /proc/bus/input/devices when
  applied.

  [Regression Potential]
  Low. Only add new IDs for currently unsupported platforms.

  ========== Original Bug Description ==========

  The Elan touchpad on my Lenovo Thinkbook isn't being detected, and
  hence isn't working.

  `sudo acpidump | grep -C3 ELAN` gives me the device's ACPI id:

  ```bash
  ghosthawkzero@EchelonV:~$ sudo acpidump | grep -C3 ELAN
     2A060: 49 4E 54 31 70 0A 20 49 44 41 44 A4 84 53 42 46  INT1p. IDAD..SBF
     2A070: 53 53 42 46 49 00 5B 82 42 0E 54 50 44 32 08 5F  SSBFI.[.B.TPD2._
     2A080: 41 44 52 00 08 49 44 41 44 00 08 48 49 44 32 00  ADR..IDAD..HID2.
     2A090: 08 5F 48 49 44 0D 45 4C 41 4E 30 36 33 34 00 08  ._HID.ELAN0634..
     2A0A0: 5F 43 49 44 0D 50 4E 50 30 43 35 30 00 08 5F 55  _CID.PNP0C50.._U
     2A0B0: 49 44 01 14 4B 04 5F 44 53 4D 04 A0 3C 93 68 11  ID..K._DSM..<.h.
     2A0C0: 13 0A 10 F7 F6 DF 3C 67 42 55 45 AD 05 B3 0A 3D  ......<gBUE....=
  ghosthawkzero@EchelonV:~$
  ```

  Have attached the content from /proc/bus/input/devices.

  **EXPECTED** - touchpad to work

  **WHAT IS HAPPENING** - touchpad not detected and touchpad not
  working.

  More info:

  LSB release:
  ```bash
  ghosthawkzero@EchelonV:~$ lsb_release -rd
  Description:  Ubuntu 19.10
  Release:      19.10
  ghosthawkzero@EchelonV:~$
  ```

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: linux-image-5.3.0-29-generic 5.3.0-29.31
  ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13
  Uname: Linux 5.3.0-29-generic x86_64
  ApportVersion: 2.20.11-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ghosthawkzero   1493 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Feb  2 19:03:29 2020
  InstallationDate: Installed on 2020-01-29 (3 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  MachineType: LENOVO 20SM
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-29-generic 
root=UUID=c070ef84-6265-4593-a4c3-b0ceddf7e9b4 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.3.0-29-generic N/A
   linux-backports-modules-5.3.0-29-generic  N/A
   linux-firmware                            1.183.3
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/11/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: DJCN14WW
  dmi.board.name: LVAC/LVAD
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0L77769 WIN
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ThinkBook 15-IIL
  dmi.modalias: 
dmi:bvnLENOVO:bvrDJCN14WW:bd12/11/2019:svnLENOVO:pn20SM:pvrLenovoThinkBook15-IIL:rvnLENOVO:rnLVAC/LVAD:rvrSDK0L77769WIN:cvnLENOVO:ct10:cvrLenovoThinkBook15-IIL:
  dmi.product.family: Thinkbook 15-IIL
  dmi.product.name: 20SM
  dmi.product.sku: LENOVO_MT_20SM_BU_idea_FM_Thinkbook 15-IIL
  dmi.product.version: Lenovo ThinkBook 15-IIL
  dmi.sys.vendor: LENOVO

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