From owner-freebsd-usb@FreeBSD.ORG Sat Jun 30 09:46:15 2012 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 36D19106564A for ; Sat, 30 Jun 2012 09:46:15 +0000 (UTC) (envelope-from erichfreebsdlist@ovitrap.com) Received: from alogreentechnologies.com (alogreentechnologies.com [67.212.224.110]) by mx1.freebsd.org (Postfix) with ESMTP id E211E8FC12 for ; Sat, 30 Jun 2012 09:46:14 +0000 (UTC) Received: from x220.ovitrap.com ([122.129.201.29]) (authenticated bits=0) by alogreentechnologies.com (8.13.1/8.13.1) with ESMTP id q5U9kCWl014168 for ; Sat, 30 Jun 2012 03:46:13 -0600 From: Erich Dollansky To: freebsd-usb@freebsd.org Date: Sat, 30 Jun 2012 16:46:10 +0700 User-Agent: KMail/1.13.7 (FreeBSD/10.0-CURRENT; KDE/4.8.3; amd64; ; ) MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201206301646.10922.erichfreebsdlist@ovitrap.com> Subject: Device working on USB 2 but not on USB 3, best way to isolate the problem 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: Sat, 30 Jun 2012 09:46:15 -0000 Hi, I have here a several storage devices which all work in different FreeBSD machines on USB 2. Some of them also work on an USB 3 port but most fail. Even one USB 3 device works on USB 2 but not on USB 3. As at least two USB 2 devices work both on USB 2 and USB 3, I expect the USB 3 port of the computer to work properly. I did some trial and error testing but could not get a clear picture. What would be a good strategy to find out the difference which causes the failure? Erich