"unfortunately using the 'elan touchpad patch' didn't work because
probably MSFT0001:00 04F3:3140 is not an elan device."

Thats not really correct. The touchpad is from Elan (see Vendor-ID 04F3)
and there are the following two versions:

ELAN0001:00 04F3:3140
MSFT0001:00 04F3:3140

The MSFT (where MS is probably the abbreviation for MicroSoft) seems to
have a different firmware that meets Microsoft's requirements and there
is no driver for it under Linux yet.

Perhaps the following article found on 
"https://windowsarea.de/2016/12/microsoft-praezisionstouchpads- 
Werden-pflicht-unter-windows-10/" will bring some clarity to the matter.
I quickly translated it with Google.

________________

Microsoft: Precision touchpad becomes mandatory for Windows 10 notebooks


During the WinHEC conference in Taiwan, Microsoft announced that the precision 
touchpad will be mandatory in a later Windows update from the Windows hardware 
compatibility program.

This means that manufacturers who do not install such touchpads will not 
receive certification for Windows. Manufacturers can still install Windows, but 
this certificate is simply missing. It's a step in the right direction, 
especially since Windows machines have long been known for their weak input 
devices. A lot has changed in the last few years, especially due to Microsoft's 
commitment. In Windows 10, for example, standard gestures were defined, which 
are mostly supported by the manufacturers.
Precision touchpad ≠ good touchpad

However, the fact that Microsoft will require a precision touchpad in
the future does not mean that it has to be a good touchpad. “Precision
touchpad” is basically just the term Microsoft uses to summarize those
touchpads that communicate via the driver integrated in Windows. In
other words: The touchpad options integrated in the settings can already
be used for the touchpad from Redstone 2. Devices that use a proprietary
Synaptics driver, for example, cannot be controlled with it.

It doesn't matter whether the touchpad comes from Microsoft, Apple, Synaptics 
or a cheap Chinese village. As long as the manufacturer controls its touchpad 
via the Windows driver, it is a “precision touchpad” for Microsoft. The 
Trekstor SurfBook W1 uses the Windows driver and is therefore a “precision 
touchpad”, but the HP Specter x360 is a proprietary panel for the settings. The 
latter undoubtedly has the better quality unit, the only difference is that the 
precision touchpad can be configured in the Windows settings and the HP 
touchpad can only be configured using software specially written for it.
a step in the right direction

The fact that touchpads are to be configured exclusively via the Windows
settings in the future is an important step. Users can find their way
around it better and the use of a touchpad under Windows is also
simplified.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-input-libinput in Ubuntu.
https://bugs.launchpad.net/bugs/1887190

Title:
  MSFT Touchpad not working on Lenovo Legion-5 15ARH05

Status in Pop!_OS:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in xserver-xorg-input-libinput package in Ubuntu:
  Confirmed
Status in linux package in Arch Linux:
  Confirmed
Status in linux package in Fedora:
  Confirmed

Bug description:
  Hello

  The MSFT touchpad of this Lenovo Legion-5 15ARH05 laptop is not reacting at 
all (pointer and click never move when touchpad is touched). This has been 
reported by other users in various websites, with various linux systems 
including other Ubuntu systems, but I saw no launchpad bug so I post one. 
Example of websites covering the issue :
  - https://askubuntu.com/questions/1253830/lenovo-legion-5-touchpad (exactly 
the same laptop)
  - https://www.linux.org/threads/lenovo-legion-5-touchpad.29536/ (similar 
laptop)

  xinput indentifies it as MSFT0001:00 04F3:3140

  Virtual core pointer                          id=2    [master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer                      id=4    [slave  pointer 
 (2)]
  ⎜   ↳ MSFT0001:00 04F3:3140 Touchpad                  id=17   [slave  pointer 
 (2)]
  ⎜   ↳ MSFT0001:00 04F3:3140 Mouse                     id=16   [slave  pointer 
 (2)]
  ⎜   ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control        id=12   [slave  
pointer  (2)]
  ⎜   ↳ Logitech USB Optical Mouse                      id=11   [slave  pointer 
 (2)]
  ⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
      ↳ Virtual core XTEST keyboard                     id=5    [slave  
keyboard (3)]
      ↳ Ideapad extra buttons                           id=15   [slave  
keyboard (3)]
      ↳ Power Button                                    id=6    [slave  
keyboard (3)]
      ↳ Integrated Camera: Integrated C                 id=10   [slave  
keyboard (3)]
      ↳ Video Bus                                       id=7    [slave  
keyboard (3)]
      ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control        id=19   [slave  
keyboard (3)]
      ↳ Power Button                                    id=9    [slave  
keyboard (3)]
      ↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control  id=13   [slave  
keyboard (3)]
      ↳ ITE Tech. Inc. ITE Device(8910) Keyboard        id=14   [slave  
keyboard (3)]
      ↳ AT Translated Set 2 keyboard                    id=18   [slave  
keyboard (3)]
      ↳ Video Bus                                       id=8    [slave  
keyboard (3)]

  Thanks a lot for your time. It does not help, but I can confirm what
  was reported on askubuntu by another user : the touchpad does work on
  Windows.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-40-generic 5.4.0-40.44
  ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
  Uname: Linux 5.4.0-40-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  nicolas    1567 F.... pulseaudio
   /dev/snd/controlC1:  nicolas    1567 F.... pulseaudio
   /dev/snd/controlC2:  nicolas    1567 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jul 10 20:14:25 2020
  InstallationDate: Installed on 2020-07-02 (8 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  MachineType: LENOVO 82B5
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic 
root=UUID=d8898017-2821-434e-ab52-fec76ac93106 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-40-generic N/A
   linux-backports-modules-5.4.0-40-generic  N/A
   linux-firmware                            1.187.1
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/12/2020
  dmi.bios.vendor: LENOVO
  dmi.bios.version: EUCN19WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: LNVNB161216
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40709 WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Legion 5 15ARH05
  dmi.modalias: 
dmi:bvnLENOVO:bvrEUCN19WW:bd05/12/2020:svnLENOVO:pn82B5:pvrLenovoLegion515ARH05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoLegion515ARH05:
  dmi.product.family: Legion 5 15ARH05
  dmi.product.name: 82B5
  dmi.product.sku: LENOVO_MT_82B5_BU_idea_FM_Legion 5 15ARH05
  dmi.product.version: Lenovo Legion 5 15ARH05
  dmi.sys.vendor: LENOVO
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.3
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-07-02 (12 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  Tags:  focal
  Uname: Linux 5.8.0-050800rc5-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True

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