From owner-freebsd-usb@FreeBSD.ORG  Tue Nov  4 07:21:53 2014
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 95998562
 for <freebsd-usb@freebsd.org>; Tue,  4 Nov 2014 07:21:53 +0000 (UTC)
Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 52B75D67
 for <freebsd-usb@freebsd.org>; Tue,  4 Nov 2014 07:21:52 +0000 (UTC)
Received: from laptop015.home.selasky.org
 (cm-176.74.213.204.customer.telag.net [176.74.213.204])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.turbocat.net (Postfix) with ESMTPSA id 0195F1FE022;
 Tue,  4 Nov 2014 08:21:49 +0100 (CET)
Message-ID: <54587E9B.50709@selasky.org>
Date: Tue, 04 Nov 2014 08:22:03 +0100
From: Hans Petter Selasky <hps@selasky.org>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.1.2
MIME-Version: 1.0
To: Steven Hartland <killing@multiplay.co.uk>, 
 "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org>
Subject: Re: ehci breaking Supermicro IPMI keyboard on uhci?
References: <5458184E.5020801@multiplay.co.uk>
In-Reply-To: <5458184E.5020801@multiplay.co.uk>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb/>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
 <mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 04 Nov 2014 07:21:53 -0000

On 11/04/14 01:05, Steven Hartland wrote:
> Had the problem where the Supermicro IPMI keyboard wouldn't work on some
> machines for a while, tonight I finally had time to play with all the
> options to see if anything would make it work.
>
> Turns out adding the following to loader.conf does fixes the issue:
> hint.ehci.0.disabled="1"
>
> So the question is why would this help?
>
> Surely disabling one controller shouldn't make devices attached to
> another work?
>

Hi,

The USB device is failing to enumerate. Are you sure there is no XHCI 
controller on this device?

--HPS