I am also having a very similar problem on my Dell Inspiron 5390 runnin
ubuntu 20.04.1 LTS. The output from running xinput reads:


⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ DELL091F:00 27C6:01F0 Mouse               id=10   [slave  pointer  (2)]
⎜   ↳ DELL091F:00 27C6:01F0 Touchpad            id=11   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Video Bus                                 id=6    [slave  keyboard (3)]
    ↳ Power Button                              id=7    [slave  keyboard (3)]
    ↳ Sleep Button                              id=8    [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate           id=9    [slave  keyboard (3)]
    ↳ Intel HID events                          id=12   [slave  keyboard (3)]
    ↳ Intel HID 5 button array                  id=13   [slave  keyboard (3)]
    ↳ Dell WMI hotkeys                          id=14   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=15   [slave  keyboard (3)]

After booting the laptop up I have no problems with the touchpad, I also
noticed that after a cold boot if i run "xinput test 11" and "xinput
test 10" only device 11 (touchpad) registers any inputs. However, once i
suspend the laptop and then wake it the touchpad loses lots of functions
(basically functions like a mouse no gestures work) and right click also
becomes middle click. If i again run both of the xinput tests again the
only device that registers inputs is now device ID 10 (the one labelled
mouse)

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-input-synaptics in Ubuntu.
https://bugs.launchpad.net/bugs/1876991

Title:
  Touchpad started appearing both as a touchpad and as a mouse input
  devices after upgrade to 20.04

Status in xserver-xorg-input-synaptics package in Ubuntu:
  Confirmed

Bug description:
  It was working perfectly on 18.04 with 5.3 kernel but after upgrade to
  20.04 it's becoming disabled because there is a "mouse" attached which
  is the same touchpad detected incorrectly, xinput --list showing both

  ⎜   ↳ MSFT0001:00 06CB:7E7E Mouse               id=11   [slave  pointer  (2)]
  ⎜   ↳ MSFT0001:00 06CB:7E7E Touchpad            id=12   [slave  pointer  (2)]

  The first line was definitely not present before, I know it because I
  use it when in openbox session.

  There is also a number of questions on AskUbuntu that look like results of 
the same problem at first glance:
  https://askubuntu.com/q/1231873/20275
  https://askubuntu.com/q/1235067/20275
  https://askubuntu.com/q/1234975/20275

  and two global search results for the same touchpad model ("MSFT0001:00 
06CB:7E7E Mouse") that show the same problem in unrelated contexts:
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=953405
  https://bbs.archlinux.org/viewtopic.php?id=240723

  I also have these errors in kernel log, may be related, weren't present 
previously:
  psmouse serio1: Failed to deactivate mouse on isa0060/serio1: -5
  psmouse serio1: Failed to enable mouse on isa0060/serio1
  psmouse serio1: Failed to disable mouse on isa0060/serio1

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xserver-xorg-input-synaptics 1.9.1-1ubuntu3
  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
  CasperMD5CheckResult: skip
  CurrentDesktop: KDE
  Date: Wed May  6 00:09:45 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 27c6:5301 Shenzhen Goodix Technology Co.,Ltd. 
Fingerprint Reader
   Bus 001 Device 002: ID 1bcf:28c1 Sunplus Innovation Technology Inc. 
Integrated_Webcam_HD
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. Vostro 5471
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-29-generic 
root=/dev/mapper/ocz-root ro quiet libata.force=1.00:noncq 
resume=/dev/mapper/ocz-swap_1 crashkernel=384M-2G:128M,2G-:256M
  SourcePackage: xserver-xorg-input-synaptics
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/25/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.9.0
  dmi.board.name: 05F5VX
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.asset.tag: Zahoriya
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.9.0:bd07/25/2018:svnDellInc.:pnVostro5471:pvr:rvnDellInc.:rn05F5VX:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: Vostro
  dmi.product.name: Vostro 5471
  dmi.product.sku: 0830
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.101-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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