From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: Vincent Perricone <vhp@buffalo.edu>, linux-kernel@vger.kernel.org
Subject: Re: Keyboard driver not refreshing settings when unplugged.
Date: Thu, 26 Nov 2009 17:22:49 -0800 [thread overview]
Message-ID: <20091127012249.GI6936@core.coreip.homeip.net> (raw)
In-Reply-To: <4AFCBEBF.3010607@gmail.com>
On Thu, Nov 12, 2009 at 08:04:47PM -0600, Robert Hancock wrote:
> 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..
Depends on the box. PS/2 devices normally send 0xaa 0x00 when plugged in
but that may get suppressed, especially on laptops.
--
Dmitry
prev parent reply other threads:[~2009-11-27 1:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-12 5:50 Keyboard driver not refreshing settings when unplugged Vincent Perricone
2009-11-13 2:04 ` Robert Hancock
2009-11-27 1:22 ` Dmitry Torokhov [this message]
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