From owner-freebsd-questions@FreeBSD.ORG Sun Apr 11 11:01:07 2010 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 1FC881065673 for ; Sun, 11 Apr 2010 11:01:07 +0000 (UTC) (envelope-from mailinglist@diamondbox.dk) Received: from csmtp1.one.com (csmtp1.one.com [195.47.247.21]) by mx1.freebsd.org (Postfix) with ESMTP id D09628FC1C for ; Sun, 11 Apr 2010 11:01:06 +0000 (UTC) Received: from diamond.diamondbox.dk (0x4dd7c703.adsl.cybercity.dk [77.215.199.3]) by csmtp1.one.com (Postfix) with ESMTP id C3DBA1BC3E417; Sun, 11 Apr 2010 11:01:05 +0000 (UTC) Message-ID: <4BC1ABFD.2080102@diamondbox.dk> Date: Sun, 11 Apr 2010 13:01:17 +0200 From: Nikolaj Thygesen Organization: diamondbox.dk User-Agent: Thunderbird 2.0.0.24 (X11/20100328) MIME-Version: 1.0 To: Programmer In Training References: <4BBE8DB1.8040905@joseph-a-nagy-jr.us> <4BBE9470.1040607@joseph-a-nagy-jr.us> <4BBEB5BC.3000509@joseph-a-nagy-jr.us> <4bbedc81.G0j71lonOCUqR/vZ%perryh@pluto.rain.com> <4BBF2674.6080402@joseph-a-nagy-jr.us> <4BBF727D.6000407@joseph-a-nagy-jr.us> In-Reply-To: <4BBF727D.6000407@joseph-a-nagy-jr.us> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD Questions Subject: Re: USB Powered Speakers 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: Sun, 11 Apr 2010 11:01:07 -0000 Programmer In Training wrote: > On 04/09/10 10:15, Brodey Dover wrote: > >> "Apr 8 22:30:16 heaven kernel: usb_alloc_device:1624: getting device >> descriptor at addr 3 failed, USB_ERR_IOERROR!" >> >> exactly! That is what is causing the issues. From what I can see, it >> is like it was explained before. The OS has chosen to play nice and >> request that the speakers are disabled. >> >> The power requirements will not affect the system until the speakers >> are producing sound. In other words, the system will only draw UP to >> the power input rating while in operation. At idle, I'd wager they may >> only use 1/10 of its power rating for the idle ICs and a power LED. >> > > > Only it's not the speakers that have their operation interrupted, JUST > the keyboard (not even the mouse is affected). > > Hi, I don't know if my issue is related to the one debated in this thread, but I just recently bought myself a pair of externally (regular power supply; no USB power) powered speakers, that plug into the sound card as usual, but when the speakers are powered up or down, my USB mouse disappears for a few seconds! It happens every time, and the mouse has its resoution reset. It's no big deal to me, but I'm a bit puzzled as to how the simple sound card connection could reset a USB connection. I'm not trying to hijack this thread, just thought the issues might be related. br - N :o)