Keyboard issues - repeating keys and ALT key "locked on"


  1. Posts : 20
    Win 10 Home
       #1

    Keyboard issues - repeating keys and ALT key "locked on"


    A couple of weeks ago, I changed my keyboard and KVM switch over to new devices on my laptop. Since then I was initially having random repeating keys, usually after switching to the laptop with the KVM. If I disconnected all external devices, the issue persisted until a reboot which usually fixes the repeating key.

    Today a new issue started with the ALT key being locked on.

    I ran the keyboard troubleshooter while the problem was active - no issues found. I then ensured all external devices were disconnected and started deleting the remaining Keyboard HID devices from device manager (there are two for some reason even though there is only the laptop keyboard). The hardware id's are:

    HID\ConvertedDevice&Col01
    HID\{00001124-0000-1000-8000-00805f9b34fb}_VID&000205ac_PID&0239&Col01

    It is the second one that is the problem. When the problem is occurring, deleting the device takes a long time. Once it is deleted, normal keyboard function is restored.

    Dell support have recommended a full windows factory reset, but I'm hoping there's a more surgical way to fix this problem with what appears to be a corrupted keyboard driver.
      My Computer


  2. Posts : 1,337
    Windows 10
       #2

    See if that specific hid device shows any errors else you may need to inform the company that makes the KVM.

    - - - Updated - - -

    Also hard to say really Keyboards can be pretty granular maybe it does not like how the Laptop keys are banked and even further laptop keyboards can be strange in how they are setup compared to standalone keyboards.
      My Computer


  3. Posts : 20
    Win 10 Home
    Thread Starter
       #3

    Thanks Malneb, but I don't think the issue is related to the KVM or keyboard itself. I have two other systems (a laptop and desktop) connected to the KVM and they are working fine and do not exhibit the issue.

    I can't find an errors on the device when I check the device events.
      My Computer


  4. Posts : 1,337
    Windows 10
       #4

    Not what i was saying. What i meant was that the either the driver for the or the KVM itself is potentially causing issues and that you may need to consult the company that makes the component.

    KVM is mirroring input so if you have issues with the driver installed then this is obviously an issue.
      My Computer


  5. Posts : 20
    Win 10 Home
    Thread Starter
       #5

    I don't think it is the KVM driver that is the problem. When the problem occurs, I disconnect the KVM and all external devices. That leaves me with two HID keyboard devices I mentioned in my initial post. If I boot the system with no external devices connected I also have these two HID keyboard devices. It is uninstalling the second one that rectifies the problem. I have observed the ALT key problem after a reboot with no external devices connected. I go in and remove that second HID keyboard device and the problem is resolved.
      My Computer


  6. Posts : 1,337
    Windows 10
       #6

    Then just disable the device if it keeps coming back disabling it should work.
      My Computer


  7. Posts : 3,541
    Windows 10 Pro 64-bit 21H1 (May 2021 build 19043.1083)
       #7

    Since it is new you can return to the shop for checking and replacement. If they say anything about charging you can insist on immediately replacing as DOA.
      My Computer


  8. Posts : 20
    Win 10 Home
    Thread Starter
       #8

    Did some more troubleshooting. One thing I forgot to mention was I also introduced a new USB-C docking station that the KVM switch was cascaded through. Removed that from the equation and connected the KVM directly to the laptop and everything has been stable for about 5 days now.
      My Computer


  9. Posts : 3,541
    Windows 10 Pro 64-bit 21H1 (May 2021 build 19043.1083)
       #9

      My Computer


 

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