From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758771Ab0EMVYD (ORCPT ); Thu, 13 May 2010 17:24:03 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:32861 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756874Ab0EMVX7 (ORCPT ); Thu, 13 May 2010 17:23:59 -0400 Date: Thu, 13 May 2010 14:21:52 -0700 (PDT) From: Linus Torvalds To: Dmitry Torokhov cc: lenb@kernel.org, "linux-kernel@vger.kernel.org" Subject: Re: [git pull] Input updates for 2.6.34-rc6 In-Reply-To: <201005131405.45732.dmitry.torokhov@gmail.com> Message-ID: References: <20100513075728.GF30110@core.coreip.homeip.net> <20100513181002.GB23708@core.coreip.homeip.net> <201005131405.45732.dmitry.torokhov@gmail.com> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 13 May 2010, Dmitry Torokhov wrote: > > But I guess because there are no devices plugged in ACPI they are "inactive" > and thus ACPI drop them. I was always wondered by ACPI did that. Len? Btw, even without actual physically plugging in the device, at least the really early KVM boxes used to basically just _physically_ switch between keyboard ports, and so using such a KVM switch is essentially also going to plug it in after boot time. Some slightly more fancier KVM devices (probably most of them by now - if you want auto-switching etc) have real electronics and actually emulate a keyboard, needed for computers that require a keyboard to even boot up ("Keyboard not detected. Press F1 to continue"). But the hard-switching ones were at least at some point way more reliable: the "smart" ones would have trouble with any "fancy" features like scroll-wheels etc. Probably not an issue any more. Of course, these days few people use PS/2 keyboards any more, but it would still be a shame to break a perfectly reasonable setup. Linus