ubuntu-x-swat team mailing list archive

[Marcus Haslam <marcus.haslam@xxxxxxxxxxxxx>]

I'm out of the office until 1st August.

On 28 Apr 2011, at 15:11, james_mcl <124406@xxxxxxxxxxxxxxxxxx> wrote:

> Daniel - where you say that you can press any key to release the stuck
> one - over the years the bug's behaviour has varied, in some  
> versions of
> Ubuntu I've been able to stop the repeting keypress by pressing  
> another
> key, in others not. At the moment I usually seem to be able to stop it
> by pressing another key several times until it's recognised - so I  
> THINK
> that the bug has at least become less severe at some point between
> Intrepid and Maverick.
>
> Like Marius says, it is true that nobody knows how many underlying  
> bugs
> are causing this and where they lie - I should have asked Bryce what  
> to
> file this as a bug in; however going by his comment #285 I assumed  
> xorg.
>
> Daniel, could you specify whether your external keyboard is PS/2, USB,
> or something else? Somebody on Ubuntu Forums directed me to a  
> discussion
> thread where users of high-end Windows machines were experiencing it  
> on
> PS/2 keyboards - one person blaming this on their having hardware
> running faster than PS/2 was designed for. Probably not an accurate
> description of most people's situation, but it does suggest that  
> knowing
> the type of any external keyboard tried might be relevant.
>
> I'll be installing Natty today, so either today or tomorrow I should  
> be
> able to say whether that fixed it for me or not.
>
> -- 
> You received this bug notification because you are a member of
> Papercutters, which is subscribed to One Hundred Paper Cuts.
> https://bugs.launchpad.net/bugs/124406
>
> Title:
>  Keyboard keys get stuck and repeat
>
> Status in GNU Emacs:
>  Invalid
> Status in One Hundred Paper Cuts:
>  New
> Status in The Linux Kernel:
>  Confirmed
> Status in X.Org X server:
>  In Progress
> Status in “linux” package in Ubuntu:
>  Won't Fix
> Status in “xorg-server” package in Ubuntu:
>  Incomplete
> Status in “linux” source package in Jaunty:
>  Won't Fix
> Status in “xorg-server” source package in Jaunty:
>  Invalid
> Status in Gentoo Linux:
>  New
>
> Bug description:
>  Keyboard keys such as the arrows, Alt-F4, PageUp/PageDown, etc. often
>  get 'stuck' and continue being 'clicked' even after they are
>  physically released. For example when clicking Alt-F4, sometimes it
>  gets stuck so all the windows are closed instead of just one.
>
>  My configuration is Feisty + Xgl + Compiz Fusion. My previous
>  configuration was Edgy + Xgl + Beryl, where this didn't happen.  
> Others
>  have reported the same problem without using either Xgl or Compiz.
>
>  The keyboard itself isn't the problem. When dual-booting to Windows,
>  everything works fine. Also, the problem happens with two different
>  keyboards (internal laptop, external USB).
>
>  My best guess is that the problem occurs at time of high system load.
>  Somehow during these times the key-release signal gets lost and the
>  key-press is repeated indefinitely. This happens more often with
>  Compiz configurations because Compiz tends to increase system load.  
> It
>  also happens more often with power-hungry apps like Firefox and
>  Acrobat Reader for similar reasons.
>
>  PS: When the keys would repeat all input devices would be locked up.
>  ie. mouse won't move, clicks don't do anything, keyboard presses  
> don't
>  register. Then when it becomes unstuck, the mouse moves around and
>  everything. Hope this helps.
>
>  See also this forum thread for other people with the same problem:
>  http://ubuntuforums.org/showthread.php?t=432057

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https://bugs.launchpad.net/bugs/124406

Title:
  Keyboard keys get stuck and repeat

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