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Thread: Some Character Keys Remapped to Junk Sequences (Ubuntu 18.04)

  1. #1
    Join Date
    Nov 2019
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    Some Character Keys Remapped to Junk Sequences (Ubuntu 18.04)

    I am running Ubuntu 18.04 on a Lenovo ThinkPad E555 laptop.

    A few weeks after the installation, some (but not all) of my keys have suddenly become "remapped" to "junk sequences". Specifically, the i, k, and comma keys.

    When I press i, the sequence `q*ew6r` is printed. When I press k, the sequence `a7ds2fjk` is printed. This problem persists after reboot and occurs in all applications.

    I have ruled out a hardware issue, as my Win 10 dual boot works fine. After reinstalling Ubuntu 18.04, the keys worked fine again for some time, but the problem has now recurred for a second time.

    I have tried the following:

    • Resetting the console and keyboard configuration: `sudo dpkg-reconfigure -plow console-setup` and `sudo dpkg-reconfigure keyboard-configuration`.
    • Verifying that I do not have conflicting keyboard layout and language settings.
    • When I execute `showkey -k` to test my keyboard, pressing the i and k keys register the same key sequences that I gave above.
    • I verified num lock is off
    • I booted into a live CD, and the i,k, and comma keys work correctly.


    Given the above troubleshooting, I believe that some sort of configuration has been corrupted, perhaps by a package update?

    I understand that there are many layers between a keypress and the final processing of that keypress, and I would appreciate some guidance about how to troubleshoot this.

    Thank you for your help - both for this issue (my first actual post!) and for all the fantastic responses to other posters that have helped me over the years.

  2. #2
    Join Date
    Oct 2009
    Location
    Reykjavk, sland
    Beans
    13,149
    Distro
    Xubuntu 19.10 Eoan Ermine

    Re: Some Character Keys Remapped to Junk Sequences (Ubuntu 18.04)

    Hi, welcome to the fora.

    Quote Originally Posted by akathehidden View Post
    After reinstalling Ubuntu 18.04, the keys worked fine again for some time, but the problem has now recurred for a second time.
    How does it work if you do a fresh install of 19.10?
    Bringing old hardware back to life. About problems due to upgrading.
    Please visit Quick Links -> Unanswered Posts.
    Don't use this space for a list of your hardware. It only creates false hits in the search engines.

  3. #3
    Join Date
    Nov 2019
    Beans
    2

    Re: Some Character Keys Remapped to Junk Sequences (Ubuntu 18.04)

    After upgrading to 19.1 using the system's update utility, the problem still persists.

    I suspect that a fresh install from a 19.10 live CD would correct the problem, as this issue has reoccurred for me a second time after reinstalling 18.04 from a live CD. However, I suspect it may likely reoccur for a third time in 19.1, since the problem mysteriously began a few days after installation of 18.04 (in both cases).

    Do you have any ideas about what configuration files I should investigate?

    I think we can narrow the configuration files down since we know a fresh install corrects the problem, while a system upgrade does not!

    Thanks!

  4. #4
    Join Date
    Oct 2009
    Location
    Reykjavk, sland
    Beans
    13,149
    Distro
    Xubuntu 19.10 Eoan Ermine

    Re: Some Character Keys Remapped to Junk Sequences (Ubuntu 18.04)

    I don't know which configuration files to check and/or edit.
    While you are waiting for someone to answer I guess that you have plenty of time to try a clean install of 19.10
    Bringing old hardware back to life. About problems due to upgrading.
    Please visit Quick Links -> Unanswered Posts.
    Don't use this space for a list of your hardware. It only creates false hits in the search engines.

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