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Date: Thu, 12 Nov 2009 20:04:47 -0600
From: Robert Hancock <hancockrwd@gmail.com>
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To: Vincent Perricone <vhp@buffalo.edu>
CC: linux-kernel@vger.kernel.org
Subject: Re: Keyboard driver not refreshing settings when unplugged.
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On 11/11/2009 11:50 PM, Vincent Perricone wrote:
> I noticed a bug which may possibly be part of the Linux kernel.  If
> one were to enable a setting on the keyboard(caps lock) and then
> unplug that keyboard.  Upon re-plugging it in or another, the system
> will still keep caps lock enabled.  When the user then goes and
> enables caps lock on their own keyboard which assumes the setting is
> disabled, the system then turns caps lock off, even though the user
> wanted it on.
>
> 2.6.31-14-generic

USB or PS/2 keyboard? I don't know that the kernel even can tell if a 
PS/2 keyboard has been unplugged or not..