From owner-freebsd-questions@FreeBSD.ORG Mon May 16 03:15:29 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1A4E0106566C for ; Mon, 16 May 2011 03:15:29 +0000 (UTC) (envelope-from perryh@pluto.rain.com) Received: from agora.rdrop.com (agora.rdrop.com [IPv6:2607:f678:1010::34]) by mx1.freebsd.org (Postfix) with ESMTP id 82D278FC0C for ; Mon, 16 May 2011 03:15:28 +0000 (UTC) Received: from agora.rdrop.com (66@localhost [127.0.0.1]) by agora.rdrop.com (8.13.1/8.12.7) with ESMTP id p4G3FJYl028048 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Sun, 15 May 2011 20:15:19 -0700 (PDT) (envelope-from perryh@pluto.rain.com) Received: (from uucp@localhost) by agora.rdrop.com (8.13.1/8.12.9/Submit) with UUCP id p4G3FJp8028047; Sun, 15 May 2011 20:15:19 -0700 (PDT) Received: from fbsd61 by pluto.rain.com (4.1/SMI-4.1-pluto-M2060407) id AA13064; Sun, 15 May 11 20:04:04 PDT Date: Sun, 15 May 2011 20:03:29 -0700 From: perryh@pluto.rain.com To: freebsd@edvax.de Message-Id: <4dd09401.Qf5DE46mpnXg4G2w%perryh@pluto.rain.com> References: <117637.44743.qm@web111903.mail.gq1.yahoo.com> <20110515103646.7558ddb2.freebsd@edvax.de> In-Reply-To: <20110515103646.7558ddb2.freebsd@edvax.de> User-Agent: nail 11.25 7/29/05 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: rpclark@ymail.com, freebsd-questions@freebsd.org Subject: Re: No keyboard after ports update, 2x moused_enable="YES" culprit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 May 2011 03:15:29 -0000 Polytropon wrote: > Do _NOT_ hotplug the PS/2 port! It's not capable of that! > > I've seen myself in the past that trying so caused a mainboard > to fly into the garbage can - as hotplugging the keyboard > seemed to have damaged the PS/2 port (it didn't work anymore, > with no keyboard). This is conventional wisdom, and I believed it until I came across, as an enclosure with a Belkin "F8E206c" PS/2 keyboard that had 3 extra keys*, specific instructions to unplug the keyboard, wait 5 seconds, and replug it to get past a BIOS incompatibility on some Intel boards using the SE440BX-2 chipset. (The next step was to upgrade the BIOS, but the hotplug exercise was necessary to get to the point of being _able_ to upgrade the BIOS.) * Power, Sleep, & WakeUp; presumably intended for ACPI or APM. > However, you actually CAN do this with USB. Yes, USB was designed to be hot-pluggable. > And I've done hotplugging with an old AT ("big" 5 pin keyboard > connector) and HIL connect/disconnect at the keyboard (!) without > any problem (IBM model M, the famous one). The AT and PS/2 keyboard interfaces are electrically identical -- only the physical connector is different. (I have seen, and used, adapters to connect either type of keyboard to the other type of system. Such adapters have no active components, just the two connectors wired together.)