From owner-freebsd-stable@FreeBSD.ORG Wed Feb 6 15:20:38 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 6F416FA2 for ; Wed, 6 Feb 2013 15:20:38 +0000 (UTC) (envelope-from karl@denninger.net) Received: from FS.denninger.net (wsip-70-169-168-7.pn.at.cox.net [70.169.168.7]) by mx1.freebsd.org (Postfix) with ESMTP id 23D4F1EE for ; Wed, 6 Feb 2013 15:20:37 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by FS.denninger.net (8.14.6/8.13.1) with ESMTP id r16FKVUd007641 for ; Wed, 6 Feb 2013 09:20:31 -0600 (CST) (envelope-from karl@denninger.net) Received: from [127.0.0.1] [192.168.1.40] by Spamblock-sys (LOCAL); Wed Feb 6 09:20:31 2013 Message-ID: <511274BA.3020604@denninger.net> Date: Wed, 06 Feb 2013 09:20:26 -0600 From: Karl Denninger User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130107 Thunderbird/17.0.2 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Subject: Re: So I whip out a FTDI-based multiport Serial USB Adapter.... [SB QUAR: Tue Feb 5 10:15:47 2013] References: <511004AA.3060201@denninger.net> <1360008362.93359.485.camel@revolution.hippie.lan> <511020DB.3050302@denninger.net> <1360012382.93359.489.camel@revolution.hippie.lan> <66CBAB45-621B-47F8-AC67-64F816AFE837@bway.net> <1360015226.93359.502.camel@revolution.hippie.lan> <51107662.8050708@denninger.net> <51107D82.8040605@denninger.net> <51108DB0.7050403@denninger.net> <51113242.4060003@denninger.net> <3af8b2a2d655b0ed501c01e30d00ff0a.authenticated@ultimatedns.net> <51113CD1.40104@denninger.net> In-Reply-To: X-Enigmail-Version: 1.5 X-Antivirus: avast! (VPS 130206-0, 02/06/2013), Outbound message X-Antivirus-Status: Clean Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2013 15:20:38 -0000 On 2/5/2013 11:25 AM, CeDeROM wrote: > On Tue, Feb 5, 2013 at 6:09 PM, Karl Denninger wrote: >> The FTDI adapter has the provision for an external power supply (+5V) >> but it does not require it unless you're running off an unpowered bus, >> which is not normally the case. 500ma is quite a bit of available energy. > Karl, can you please use external power supply to power up the adapter > - with and without the additional devices step by step - this way we > will eliminate one of the possible causes :-) > That's pretty-clearly not the problem -- I have removed the KVM from the system and added a couple other USB devices, including switching the UPS attached to it from serial communication to USB, and it's fine. Whatever is going on here it's KVM-related, not the FTDI box. That's an interesting issue all on its own but one that may be rather difficult to solve -- let's toss this thread and I'll start a new one when I can start chasing the KVM issue -- that's one that's not good as well, but I will check across OS revisions and see if it's limited to 9.x or whether it shows up on other, older releases as well first. -- -- Karl Denninger /The Market Ticker ®/ Cuda Systems LLC