From owner-freebsd-usb@FreeBSD.ORG Fri May 1 02:44:51 2009 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6CBA1106564A for ; Fri, 1 May 2009 02:44:51 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85]) by mx1.freebsd.org (Postfix) with ESMTP id 1458D8FC16 for ; Fri, 1 May 2009 02:44:50 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from localhost (localhost [127.0.0.1]) by harmony.bsdimp.com (8.14.2/8.14.1) with ESMTP id n412g9lo028107; Thu, 30 Apr 2009 20:42:09 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Thu, 30 Apr 2009 20:42:12 -0600 (MDT) Message-Id: <20090430.204212.-859615870.imp@bsdimp.com> To: ee@athyriogames.com From: "M. Warner Losh" In-Reply-To: <009e01c9ca01$356cca70$a0465f50$@com> References: <200903032243.31914.hselasky@c2i.net> <000f01c9c8dd$c4fdba20$4ef92e60$@com> <009e01c9ca01$356cca70$a0465f50$@com> X-Mailer: Mew version 5.2 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-usb@freebsd.org Subject: Re: Bad USB port explanation? X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 May 2009 02:44:51 -0000 In message: <009e01c9ca01$356cca70$a0465f50$@com> "Engineering" writes: : Only on one USB port is it going haywire. I can disconnect the camera while : the app is running, move it to another port, and it pops up at 30fps. Move : it back to the top left port, and it goes bad again. I've seen three things cause this. 1: static damage. 2: improper balancing of the inputs and 3: overloaded hub for other ports... Warner