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Date:      Mon, 25 Jul 2011 17:10:47 +0200
From:      Matthias Apitz <>
Subject:   keyboard latency from time to time
Message-ID:  <>

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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;

What could this causing?


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