Lenovo Yoga 6 (13ALC6) keyboard not recognized

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  • FZG
    Senior Member
    • Sep 2022
    • 96
    • Germany

    #1

    Lenovo Yoga 6 (13ALC6) keyboard not recognized

    Lenovo Yoga 6 13ALC6
    Model: 82ND
    Board: LA-K211P
    Schematic: https://www.badcaps.net/forum/docume...ic#post3482405

    Hi guys!
    I recently bought a Lenovo convertible Laptop (Yoga 6 13ALC6) in faulty condition. It originally had a corrupted BIOS but I was able to resolve this by flashing a clean bin. Now the laptop works fine except for one thing, the keyboard. It does not work in Windows but it works in BIOS setup. The keyboard itself is probably not at fault, every single key works fine in BIOS but as soon as Windows (11, 24H2, fresh install) boots up, all functionality of the keyboard is lost. This also happens in Windows safe mode and it even happens in a Linux live environment. So it´s probably not driver-related.

    For a while I thought the device might be stuck in tablet mode but that´s probably not the case. The touchpad is working, the rotation lock icon in the action center is greyed out and a registry entry called "ConvertibleSlateMode" is automatically set to "1" (meaning the device is not recognized as a convertible but as regular laptop). Changing this value doesn´t do anything and creating another entry called "ConvertibilityEnabled" (which is supposed to force one mode or the other) won´t help either.

    I am sort of stuck and confused here and ran out of ideas. If anyone has an idea on how to proceed, please share it!

    Thanks.
  • Ponto da Manutenção
    Senior Member
    • May 2024
    • 89
    • Brasil

    #2
    Serial number and firmware backup?

    The (KB9022) is programmable...

    Comment

    • FZG
      Senior Member
      • Sep 2022
      • 96
      • Germany

      #3
      Serial number: MP20T9TY

      I used the clean bin found in this thread: https://www.badcaps.net/forum/troubl...17#post1751017

      After flashing that bin with a programmer, I then downloaded the latest bios file from Lenovo and updated it the regular way.

      I´m not quite sure what you mean by the KBC being programmable? I didn´t change that.

      By the way, I just realized there is one key working in Windows: the "del" key. Weird.

      Comment

      • Ponto da Manutenção
        Senior Member
        • May 2024
        • 89
        • Brasil

        #4
        ​​​​​Main features:
        Manufacturer: ENE Technology
        Model: KB9022QD
        Type: Super I/O / Embedded Controller
        Encapsulation: LQFP-128

        Programming and recording:
        The chip usually comes virgin, without recording, which means that it needs to be programmed with specific firmware of the motherboard where it will be installed.

        Programming can be done with recorders such as SVOD4.

        You should observe some details before.
        Signals and voltages;

        KB_MUTLI_KEY....
        KB_RST#..............
        ESPI_ALERT#......

        Here are the files needed to do it...
        ​​
        Attached Files

        Comment

        • FZG
          Senior Member
          • Sep 2022
          • 96
          • Germany

          #5
          Wow, thanks for the resources. Unfortunately I don´t have access to an SVOD or similar programmer. Also I´m not convinced the EC is at fault. Why is everything fine in bios/uefi setup and then the EC stops recognizing the keyboard after OS loads? I don´t quite understand that. By the way, when I updated to the latest bios "the regular way", the EC firmware was updated as well.

          Comment

          • Ponto da Manutenção
            Senior Member
            • May 2024
            • 89
            • Brasil

            #6
            you didn't answer?

            Signals and voltages:

            KB_MUTLI_KEY....
            KB_RST#..............
            ESPI_ALERT#......

            I also know that some devices update the EC Firmware automatically when starting the main Firmware update.

            The only component on your board that fully controls the keyboard is the (KB9022QD).

            If you don't have a firmware problem...then you only have an internal defect in the (KB9022QD).

            Comment

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