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Date: Tue, 28 Feb 2006 09:08:17 -0600
From: Craig Boston <craig@xfoil.gank.org>
To: Maksim Yevmenkin <maksim.yevmenkin@savvis.net>
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Cc: freebsd-current@freebsd.org
Subject: Re: [PATCH] kbdmux(4) update
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On Fri, Feb 24, 2006 at 03:36:14PM -0800, Maksim Yevmenkin wrote:
> dear Hackers,
> 
> i was finally able to trace hard lockup problem with kbdmux(4), ps/2 
> keyboard and ps/2 mouse under x11.
> 
> the problem was traced back to the following code in kbdmux(4)
> 
> this is only happening when kbdmux(4), ps/2 keyboard and ps/2 mouse used 
> together, and, here is why: atkbd_check_char() calls kbdc_data_ready(). 
> the later will return "true" if there are pending data in either kbd or 
> aux queue.

Hmm, I wonder if this could be the cause of the lockups on my laptop
when using the touchpad.  I started using kbdmux a while ago with the
built-in (PS/2) and USB keyboard but never even suspected it when I
traced my occasional hard lockups to using the touchpad.

I'll try the patch tonight and see if it clears up the problem.

Craig