From owner-freebsd-usb@FreeBSD.ORG Mon Mar 11 20:43:13 2013 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 36491726 for ; Mon, 11 Mar 2013 20:43:13 +0000 (UTC) (envelope-from rfg@tristatelogic.com) Received: from outgoing.tristatelogic.com (segfault.tristatelogic.com [69.62.255.118]) by mx1.freebsd.org (Postfix) with ESMTP id 13622F87 for ; Mon, 11 Mar 2013 20:43:12 +0000 (UTC) Received: from segfault-nmh-helo.tristatelogic.com (localhost [127.0.0.1]) by segfault.tristatelogic.com (Postfix) with ESMTP id 15C193BB20; Mon, 11 Mar 2013 13:43:07 -0700 (PDT) From: "Ronald F. Guilmette" To: Hans Petter Selasky Subject: Re: Help, please... USB 3.0 card won't attach again after first detach In-Reply-To: <513DEC7B.3080107@bitfrost.no> Date: Mon, 11 Mar 2013 13:43:07 -0700 Message-ID: <2101.1363034587@server1.tristatelogic.com> Cc: freebsd-usb@freebsd.org X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Mar 2013 20:43:13 -0000 In message <513DEC7B.3080107@bitfrost.no>, Hans Petter Selasky wrote: >If you plug another USB device like a memory stick, does the same happen? > >Is your USB HDD self powered? Thank you very much for your questions. I am ashamed to admit that I simply did not stop to think that I should try various USB devices to see if any others would make a difference to this problem. Now I have done several tests, based on your questions, and the specific device being plugged in quite clearly _does_ make a difference. I am fortuante that I happen to have several USB memory sticks on hand, including both USB 2.0 and also USB 3.0 sticks, and I also have on hand three (3) different USB 3.0 external 2.5 inch (5400rpm) drives. I've tested all these now with my new Anker[tm] USB 3.0 PCIe card, and now I know what I did not know before... the problem I described is apparently limited to just one of my external USB 3.0 hard drives... which is indeed self-powered... although I'm not at all persuaded that that makes any difference. All of my USB 2.0 & 3.0 memory sticks work just fine with the Anker card. Of my USB 3.0 external hard drives, I have just the following three: 1) Hitachi Mobile Touro (Model 0S03452) 500GB 5400rpm (self-powered) 2) HGST 2.5" 1TB/5400rpm drive (model 0s03508) mounted inside of a brand new Patriot[tm] Gauntlet2 external 2.5" USB 3.0 self-powered enclosure 3) identical to #2 above The latter two drives work just fine with the Anker PCIe card, with no problems whatsoever. >From all my testing, it is now 100% clear that the only problem is with the Hitachi Mobile Touro drive. As noted above, this drive is self-powered, but then so are the other two external 2.5" drives that I have had complete success with, so I really don't think that this is a power issue. I should perhaps note also that I have used the Hitachi Mobile Touro also with my laptop (USB 2.0 port & Windows 7), with another computer (USB 2.0 only, Windows 7 & 2000) and even with my LG Blu-ray player, and it has never before given me even a hint of trouble. But clearly, there is some incompatability between the Hitachi Mobile Touro and the Anker PCIe USB 3.0 card. I will inform the manufacturer. Thanks again for your questions and makeing me do my homework. I apologize for failing to have done it earlier. Regards, rfg P.S. For whatever it's worth I also don't believe that this problem has anything to do with power supply issues because (a) the little blue light on top of the Hitachi Mobile Touro does in fact come on when it is plugged in, and also, the Anker[tm] card _does_ have a place on it to attach a 4-pin molex power connector, from the system power supply, and I have of course done that. It seems that this card and this drive just do not like each other.