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matanster
Asked: 2022-03-15 10:30:35 +0800 CST

Pairing a logitech touchpad to a Logitech Unifying Receiver does not make it act as a pointing device

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I have been using a standalone Logitech touchpad with my Ubuntu desktop, and trying to pair another one to my backup desktop I learn that both of the Logitech touchpads will not function as a pointing device after being paired, at present time on my Ubuntu 20.04 machines. Not even on the desktop machine where it worked till I unpaired them to narrow down the problem. They are just not acting as pointing devices anymore after pairing/re-pairing them.

I am using Solaar for the pairing.

Here's my solaar output when both touchpads have been re-paired:

$ solaar show
Unifying Receiver
  Device path  : /dev/hidraw1
  USB id       : 046d:c52b
  Serial       : 08C4950C
    Firmware   : 12.10.B0032
    Bootloader : 02.14
    Other      : AA.AA
  Has 2 paired device(s) out of a maximum of 6.
  Notifications: wireless (0x000100)
  Device activity counters: 2=17

  1: Wireless Touchpad
     Codename     : Wireless Touch
     Kind         : touchpad
     Wireless PID : 4011
     Protocol     : HID++ 2.0
     Polling rate : 8 ms (125Hz)
     Serial number: DCBF0037
     The power switch is located on the base.
     Battery: unknown (device is offline).

  2: Wireless Rechargeable Touchpad T650
     Codename     : T650
     Kind         : touchpad
     Wireless PID : 4101
     Protocol     : HID++ 2.0
     Polling rate : 8 ms (125Hz)
     Serial number: E6CBD4AB
     The power switch is located on the base.
     Battery: unknown (device is offline).

This output is after it has been supposedly paired, as one can see from the "Unpair" button on the solaar GUI:

solaar show output

$ solaar --version
solaar 1.0.1

To reiterate, these are touchpads I had successfully acting as pointing devices until un-pairing and re-pairing today.

I got one unifying receiver dongle per each of those touchpads, so I tested all combinations and the problem is the same when trying each of the two unifying receiver dongles. The problem seems consistent across the two touchpad models (one being a T650 the other a built older to recognize now), two logitech unifying receivers and two Ubuntu 20.04 machines.

How would you approach fixing it up so that they actually work as pointing devices after pairing them?

(I'm using X11 and Gnome Shell as the windowing system, on Ubuntu 20.04 with its latest updates installed, in case it matters).

20.04

1 Answers

  1. Best Answer

    Your version of Solaar is antique. You have 1.0.1 and the latest is 1.1.1.

    Update this way...

    The easy way to install/maintain/upgrade Solaar is to use a PPA.

    Add the repository...

    See https://launchpad.net/~solaar-unifying/+archive/ubuntu/stable

    sudo add-apt-repository ppa:solaar-unifying/stable
sudo apt-get update

    Install Solaar...

    sudo apt install solaar

    Note: If you already have it installed, Software Updater can be used to upgrade it.

    If you don't wish to see the popup window at startup...

    See https://pwr-solaar.github.io/Solaar/

    Solaar’s GUI can be started in several ways

    --window=show (the default) starts with its main window visible,
--window=hide starts with its main window hidden,
--window=only does not use the system tray, and starts with main window visible.

    For more information on Solaar’s command-line interface use the help option...

    solaar --help

    Extra credit

    Touchégg is an app that runs in the background and transform the gestures you make on your touchpad or touchscreen into visible actions in your desktop.

    See touchegg at https://github.com/JoseExposito/touchegg

    Enable GNOME Shell multi-touch gestures on X11 with this extension.

    See X11 Gestures at https://github.com/JoseExposito/gnome-shell-extension-x11gestures

    The desktop application to configure Touchégg

    See touche at https://github.com/JoseExposito/touche

    Note: This requires X11, and won't work in Wayland.

    Update #1:

    firmware updates

    Some starter info...

    You might try upgrading the firmware in the Logitech unifying dongles. See https://community.logitech.com/s/question/0D531000055gw8YCAQ/logitech-response-to-unifying-receiver-research-findings for instructions and the firmware.

    You might also check the USB settings in your BIOS. They may need to be set to USB 2.0, or legacy.

    Lastly, you might have to plug the dongle directly into your computer's USB port, instead of a hub (if you're using one).

    Update: https://community.logitech.com/s/question/0D531000058b3B7CAI/logitech-response-to-research-findings

    Update: https://www.techsupportalert.com/content/update-your-logitech-wireless-dongle-right-now.htm https://support.logi.com/hc/en-us/community/posts/360032078393-Logitech-Response-to-Research-Findings

    Update: https://support.logi.com/hc/en-us/community/posts/360033207154-Logitech-Unifying-Receiver-Update https://support.logi.com/hc/en-us/articles/360035037273

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