[Bug 1906128] Re: Touchpad not detected on ByteSpeed C15B laptop

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-
bionic'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
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** Tags added: verification-needed-bionic

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

Title:
Touchpad not detected on ByteSpeed C15B laptop

Status in linux package in Ubuntu:
In Progress
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Focal:
Fix Committed
Status in linux source package in Groovy:
Fix Committed
Status in linux source package in Hirsute:
In Progress

Bug description:
[Impact]
Touchpad on a ByteSpeed C15B laptop is not working.
User will need to add i8042.noloop=1 to boot options to make it work.

[Fix]
* a48491c65b513e ("Input: i8042 - add ByteSpeed touchpad to noloop table")

This fix can be cherry-picked into all affected releases.

[Test Case]
Test kernel for Bionic / Focal can be found here:
https://people.canonical.com/~phlin/kernel/lp-1906128-C15B/

And they have been tested with positive test results.

[Where problems could occur]
The fix is just a small and simple hardware quirk. I can't think of any potential problem for now.

== Original Bug Report ==
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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