Re: Modifying USB keyboard polling time?

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On Tue, Jan 19, 2010 at 08:03:54PM -0500, Mathew Hennessy wrote:
> Hi,
> 	I was wondering if there was an equivalent
> of /sys/module/usbhid/parameters/mousepoll for USB keyboards?  I have a
> Das Keyboard, and it looks like its interval is 24ms..  Can this even be
> set in software or is it burned onto the keyboard's controller (or a
> mandatory usbhid spec)?

It is part of the device descriptor itself, and can not be changed,
sorry.

> Thing is, when I type 2 keys (like 'f' and 'd')
> together very rapidly, they always come out 'left to right' as that's
> how this keyboard scans.  From what I've googled, this is common to all
> USB keyboards and _not_ to PS/2, but I prefer having USB so I can hang
> my mouse off it.  Also, I don't think this keyboard (Das Keyboard) will
> work with a PS/2 dongle, though I have yet to try.

This sounds like a broken keyboard, I would suggest replacing it :)

good luck,

greg k-h
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