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Date:      Mon, 9 Apr 2012 19:06:59 +0200
From:      Matthias Apitz <>
Subject:   Re: keyboard latency from time to time
Message-ID:  <20120409170659.GA4608@tinyCurrent>
In-Reply-To: <>
References:  <>

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El día Monday, July 25, 2011 a las 05:10:47PM +0200, Matthias Apitz escribió:

> Hello,
> I run a 9-CURRENT from end of October on an Acer D250 laptop; which in
> general runs very fine; from time to time (say once a month) I encounter
> the following situation within KDE3 or X11:
> from a moment to another (can't say what action triggers this) the
> keyboard stops working; there are just no keyevents delivered on short
> press to any window; I've checked it with xev(1); mouse is working fine and I can
> close the windows or the whole session of KDE, of course loosing my
> connections or the content of files I'm editing in that moment;
> the keyevent is only delivered when you press the key for around half
> second, or so, and after this also the normal key re-iteration is
> produced; its even hard to catch only one keyevent and not twice or more;
> this is true for all keys, including Ctrl and Backspace, ...
> after restarting X11 and KDE it is fine again;


Months later, in some other issue, I learned about the feature of KDE
"slow keys" and what I have described is exactly the same behaviour and
I can now even reproduce this with just pressing and holding down the
Shift-key for around 8 secs; when it happens one must go to the KDE
Control Center and activate 'slow keys' (yes, they are not shown as
activated in this moment) and deactivate 'slow keys' again, and all is

Matthias Apitz
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
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