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From: Brad Hards <bhards@bigpond.net.au>
To: Ralph Corderoy <ralph@inputplus.co.uk>, linux-kernel@vger.kernel.org
Subject: Re: Happy Hacking Keyboard Lite Mk 2 USB Problems with 2.4.18.
Date: Mon, 1 Jul 2002 21:24:20 +1000
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On Mon, 1 Jul 2002 21:02, Ralph Corderoy wrote:
> Hi,
>
> Does anyone here have a USB Happy Hacking Keyboard Lite Mk 2 keyboard?
>
> On connecting to my 2.4.18 Linux system I find that it works great,
> except that certain triples of keys produce four characters instead of
> three when typed in rapid succession.  This happens under XFree86 and
> also at a tty.  For example, typing `swa' rapidly produces `swaw'.
What is the event interface (dev/input/eventX) showing for this type of input?

> Further investigation revealed that only certain combination of keys
> exhibit the problem.  More examples are
>
>     keys produces
>     rty    rtty
>     yui    yuui
>     tyu    tyuy
>     swa    swaw
>     jhg    jhgh
>
> But other won't show the problem, e.g. `zxc', `asd', and `qwe'.
>
> My theory is that usbkbd.o doesn't cope with ErrorRollover which is
> being generated, unlike hid.o which didn't used to but does now.
Err, how do you reconcile that with only seeing it on some keys?

BTW: usbkbd isn't meant for real work. You should use full HID.

-- 
http://conf.linux.org.au. 22-25Jan2003. Perth, Australia. Birds in Black.
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