Found something for same motherboard but different OEM:

commit 2e2679a168fe1a0a9089e4e401d6a51b26c4f557
Author: Marcos Paulo de Souza <marcos.souza....@gmail.com>
Date:   Sun Dec 18 15:26:12 2016 -0800

    Input: i8042 - add Pegatron touchpad to noloop table
    
    commit 41c567a5d7d1a986763e58c3394782813c3bcb03 upstream.
    
    Avoid AUX loopback in Pegatron C15B touchpad, so input subsystem is able
    to recognize a Synaptics touchpad in the AUX port.
    
    Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=93791
    (Touchpad is not detected on DNS 0801480 notebook (PEGATRON C15B))
    
    Suggested-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
    Signed-off-by: Marcos Paulo de Souza <marcos.souza....@gmail.com>
    Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

______
Following that bug report (93791), I tried adding i8042.noloop=1 to boo options 
and that *DOES* fix the problem.    Perhaps this laptop needs same patch as the 
other pegatron?

Thanks!

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https://bugs.launchpad.net/bugs/1906128

Title:
  Touchpad not deteced on Bytespeed C15B laptop

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Touchpad hardware is OK and works for Win10.  Not working for live
  disc, not for 18.04 and not for 20.04 after upgrading.  I've attached
  a Logitech wireless mouse with its USB adapter and that works.
  Bluetooth is also missing, but I have not started trying to skull that
  out.  I'm happy to help try debugging things, and to help resolve the
  issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-54-generic 5.4.0-54.60
  ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65
  Uname: Linux 5.4.0-54-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.12
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  tom        1395 F.... pulseaudio
   /dev/snd/controlC0:  tom        1395 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Nov 28 19:09:05 2020
  InstallationDate: Installed on 2020-01-26 (307 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 
(20190805)
  MachineType: ByteSpeed LLC ByteSpeed Laptop C15B
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-54-generic 
root=UUID=07b919ee-c6ad-41a5-9c64-df3c8e477b6f ro quiet splash i8042.reset 
i8042.nomux i8042.nopnp i8042noloop noapic vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-54-generic N/A
   linux-backports-modules-5.4.0-54-generic  N/A
   linux-firmware                            1.187.4
  RfKill:
   0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to focal on 2020-11-25 (3 days ago)
  dmi.bios.date: 03/18/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: C15B.616
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: C15B
  dmi.board.vendor: PEGATRON CORPORATION
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: ByteSpeed LLC
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrC15B.616:bd03/18/2014:svnByteSpeedLLC:pnByteSpeedLaptopC15B:pvr1.0:rvnPEGATRONCORPORATION:rnC15B:rvr1.0:cvnByteSpeedLLC:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: PEGA Family
  dmi.product.name: ByteSpeed Laptop C15B
  dmi.product.sku: 0
  dmi.product.version: 1.0
  dmi.sys.vendor: ByteSpeed LLC

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