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Date: Sat, 5 Sep 2009 20:06:53 +0100
From: Bruce Cran <bruce@cran.org.uk>
To: Ed Schouten <ed@80386.nl>
Message-ID: <20090905200653.000057c8@unknown>
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Cc: freebsd-current@freebsd.org, Stefan Ehmann <shoesoft@gmx.net>,
	Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: ukbd: short freeze when activating LEDs
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On Sat, 5 Sep 2009 20:29:29 +0200
Ed Schouten <ed@80386.nl> wrote:

> * Hans Petter Selasky <hselasky@c2i.net> wrote:
> > On Saturday 05 September 2009 16:32:55 Stefan Ehmann wrote:
> > > Whenever I press capslock/numlock, the system shortly (< 0.5 ms)
> > > freezes.
> > 
> > It might also be because the USB keyboard driver is using Giant,
> > which can be congested.
> 
> For half a second? I experience the same issue. I also have the same
> issue with the Syscons VGA driver when switching windows. Some time
> ago I talked about this with some other people and it may be possible
> it has something to do with SMIs. Not sure...
> 

Half a millisecond or, as reported in another message, 100us :)
I suspect the OP probably did mean 0.5s, a pause which someone can both
see and hear.

-- 
Bruce Cran