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    #1

    Problems with keyboard "jumping" characters

    Hallo! I just installed a new Kubuntu 6.06 LTS on my laptop (an Acer Aspire 1681 WLCi), without messing with any setting - just a plain install.
    Strangely I've a problem: when I type something (in every application) sometimes the input "freezes" for a second or so and misses the characters I type in that time. So I end up with phrases missing some characters.
    I don't know where to look, I tried to see with dmesg | tail if there's something about it but there is no sign of it.
    Is this an X problem? If so, where could I look to try to fix this?
    Thanks,
    Andrea
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    #2
    Re: Problems with keyboard "jumping" characters

    Andrea,

    admittedly, I'm only guessing, but does the console command top tell you anything about a job going berserk (e.g. by completely occupying your system's computing power)?

    HTH
    Bernd
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      #3
      Re: Problems with keyboard "jumping" characters

      No, there's no such process. Everything seems fine with top, there's no process consuming all the resources.
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        #4
        Re: Problems with keyboard "jumping" characters

        Andrea,

        o.k., next guess then, trying to eleminate potential sources of trouble:

        - Have you ever tried to work with an external keyboard? (Just to check things out ...)

        - Does the graphical interface behave strangely (e.g. display "trails" from cursor movement)?

        If the latter one applies to your system, I would agree to your assuption regarding the X server - if this is not the case (as I dare to suspect), maybe there's something wrong in the communication between keyboard and Kubuntu ...

        By the way: have you ever tried to make use of a live system (preferably based on Debian, thus a "relative" to Kubuntu) - again: not as a replacement, but in order to narrow down what could be relevant to the solution.

        HTH
        Bernd
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          #5
          Re: Problems with keyboard "jumping" characters

          Hi! Thanks again for your kind answer.
          I don't have any problem with the cursor, and there's no trails or similar. I've not tried a Live system, but before changing the HD I had a Ubuntu 5.10 installed, and with gnome it worked greatly. Then when I changed my hard disk I installed Kubuntu and here's the problem. On the same hd I've a windows XP pro system, and keyboard works perfectly there - I mean, no hardware problem.
          I still haven't tried an external keyboard, as I don't have an usb one. I'm gonna try to find one and try it, just to see.
          Thanks again!
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            #6
            Re: Problems with keyboard "jumping" characters

            Andrea,

            in this case I'd assume that some part of your current version of Kubuntu doesn't behave too well ... therefore, I would suggest another two steps:

            - Boot from a "Debian style" live system (e.g. Kanotix 2006 RC 4), and if with this your keyboard works properly, save the live system's version of the file /etc/X11/xorg.conf for later reference (read: to compare this one to the version Kubuntu itself makes use of).

            - Log out of your graphical desktop and log in to the console, and just hack in whatever you like ... if there nothing get's lost, I would suspect a problem in / with the graphical desktop (read: KDE); if even there typing doesn't work properly, I might be a bug of sorts in the current kernel (what would mean that you're doomed - but that's most unlikely, as I believe).

            Remark: by default, the keyboard layout on the console will be set to US-american style - therefore, there's no reason to panic if the output on the screen in respect of contents won't go with your typing


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              #7
              Re: Problems with keyboard "jumping" characters

              We're in the dramatic section, I think!
              The problem appears also in the console. I switched to the console before logging in hitting ctrl+alt+F1, and there's the problem too.
              The strangest thing of all is that I updated my kubuntu to the 6.06.3 with apt-get distupgrade, now I have the latest provided kernel too (the 2.6.15-27) and also with this kernel there's this bug.
              The other one is 2.6.15-23.
              Guess I'll have to download another distribution and pray the Gods.
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                #8
                Re: Problems with keyboard "jumping" characters

                Andrea,

                that's defintely not what I wanted to "hear"

                However, I think it would be interesting to see how your laptop behaves with Simply Mepis "on board": this system is derived from Debian as well as from (K)Ubuntu - thus a close relative, so to speak ...

                I wish I could have helped you on - it such a strange phenomenon

                Bernd
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