Lenovo Flex 5 Touchpad Not Working

[Ryan O'Connor]

I recently installed Ubuntu 22.04 LTS as a dual boot on my Lenovo Flex 5 14ARE05 and the touchpad doesn't work.

The Touchpad is not displayed in settings. It is also missing from my xinput, and libinput list-devices. I've checked the BIOS and there isn't a toggle there either.

I have tried various kernels (5.19.17, 5.15, 5.14, 5.4, 6.02, and the latest 6.04) in mainline.

I changed the grub to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.proto=bare"
GRUB_CMDLINE_LINUX="i8042.reset i8042.nomux i8042.nopnp i8042.noloop"
also each separately and with nomux and/or noloop set =1.

I've turned the psmouse on and off with sudo modprobe.

I'm not sure what else to do, or is there not a fix for this yet? I think ultimately the issue lies in xinput and libinput not showing the touchpad at all, but I can't find a fix for that either.

hardware that is installed is the MSFT0001:00 04F3:3140 mouse

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 6.2.0-26.26~22.04.1-generic 6.2.13
Uname: Linux 6.2.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 25 18:11:48 2023
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2023-08-25 (0 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
Symptom: installation
UpgradeStatus: No upgrade log present (probably fresh install)