Touchpad not detected and does not work

[Christer]

  affects ubuntu
Touchpad not detected and dose not work Lenovo Thinkpad A475.
Affects: Ubuntu 20.04, Ubuntu 22.04, Ubuntu MATE 22.04, Elementaryos 7,
MX Linux 21.2.1, and AlmaLinux 9.1 live.
Dose NOT affect (touchpad works): Windows 10 live/installer, and Windows
7 live/installer.
Running latest BIOS and latest update of Ubuntu 22.04.
Began to work after starting Windows 10 live/installer and then restart
the computer.

--
Sent from CBM-II

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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: christer 1935 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2023-03-17 (7 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
MachineType: LENOVO 20KMS0QA00
Package: linux (not installed)
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.19.0-35-generic root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.19.0-35.36~22.04.1-generic 5.19.17
RelatedPackageVersions:
 linux-restricted-modules-5.19.0-35-generic N/A
 linux-backports-modules-5.19.0-35-generic N/A
 linux-firmware 20220329.git681281e4-0ubuntu3.10
Tags: jammy
Uname: Linux 5.19.0-35-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/12/2021
dmi.bios.release: 1.23
dmi.bios.vendor: LENOVO
dmi.bios.version: R04ET45W (1.23 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KMS0QA00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.19
dmi.modalias: dmi:bvnLENOVO:bvrR04ET45W(1.23):bd04/12/2021:br1.23:efr1.19:svnLENOVO:pn20KMS0QA00:pvrThinkPadA475:rvnLENOVO:rn20KMS0QA00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20KM_BU_Think_FM_ThinkPadA475:
dmi.product.family: ThinkPad A475
dmi.product.name: 20KMS0QA00
dmi.product.sku: LENOVO_MT_20KM_BU_Think_FM_ThinkPad A475
dmi.product.version: ThinkPad A475
dmi.sys.vendor: LENOVO

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Libera.chat.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/2012413/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2012413

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Christer (arctic-stoat)]

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[ole.tange (n-launchpad-net-tange-dk)]

I can confirm this (Lenovo A475).

However, after reinstalling Ubuntu 22.04.3 three times, the touchpad and trackpoint suddenly works.

I cannot explain how that happened.

[ole.tange (n-launchpad-net-tange-dk)]

Problem still exists in Ubuntu 24.04.

This seems to work as a workaround:

    sudo rmmod psmouse -f -v
    sudo modprobe psmouse -v

[ole.tange (n-launchpad-net-tange-dk)]

After the above `xinput list` gives:

⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ USB Optical Mouse id=10 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=13 [slave pointer (2)]
⎜ ↳ TPPS/2 IBM TrackPoint id=14 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ Sleep Button id=9 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
    ↳ ThinkPad Extra Buttons id=12 [slave keyboard (3)]

Both trackpoint and touchpad work.