From owner-freebsd-stable@FreeBSD.ORG Thu Jun 24 10:47:47 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 41C151065673 for ; Thu, 24 Jun 2010 10:47:47 +0000 (UTC) (envelope-from alex.markelov@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id C7BC88FC22 for ; Thu, 24 Jun 2010 10:47:46 +0000 (UTC) Received: by wyf22 with SMTP id 22so192350wyf.13 for ; Thu, 24 Jun 2010 03:47:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to :content-type:content-transfer-encoding:mime-version:subject:date :x-mailer; bh=b0zJddBkgVO03cLoRPMu606eiormAegFK0lVeOLcnWU=; b=T97PUQQ7nYYbFFymXr65CHTbfwTBc5so0Kj5QBRtFcVwaJ0oXcPnJ0ax5TkyiGUaKB 2uRtyMs0QkBhsVdjOWajfX0BpymOFFnn4swJQTYnVbxpLFjeNtfmCk+XFABmw7OLMQ4T WHOy+Lw0//fEHcSrw3EWRXCT8Y/5t7AxEp88M= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date:x-mailer; b=to1FOsnsrZ2EV9OHlTD5p+9O1dwtwVQpWPH+sFZw2vf/JPGqBEOfYM6eYprtur/C17 Bn4cLD3htPCoh9qkck6mJ+ESQkoFHRPh3ZRAes4ulrbNVjANytqBd2Hqhe0VDiIy7h6t DwPzbQRpENdzlBbskMj8vOe6A8Bdoc1DUW83M= Received: by 10.227.157.81 with SMTP id a17mr8836368wbx.146.1277376465317; Thu, 24 Jun 2010 03:47:45 -0700 (PDT) Received: from dyn-9-161-170-176.mul.ie.ibm.com (gbibp9ph1--blueice2n1.emea.ibm.com [195.212.29.75]) by mx.google.com with ESMTPS id y31sm50234338wby.16.2010.06.24.03.47.43 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 24 Jun 2010 03:47:44 -0700 (PDT) Message-Id: <4326E32B-9C38-4C7C-BDB1-8FFF1247C6B4@gmail.com> From: Alex Markelov To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Date: Thu, 24 Jun 2010 11:47:43 +0100 X-Mailer: Apple Mail (2.936) Subject: Is there known problem with USB flash readers? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Jun 2010 10:47:47 -0000 Hi Guys! I have a strange problem with my flash card reader when dd'ing NanoBSD images onto a CF card. It works for some time (3-4 writes of images), then I start getting scsi error messages and dd hangs. I have to disconnect/re-connect the reader to be able to write to CF again, but sometimes even this trick doesn't work. One day it stopped working for me and since I had a deadline to meet, went to local shop and bought another one (different model and brand). It worked fine for few write iterations and then it developed the same problem. When I decided (out of desperation) to try the old one again, it worked. So, I ended up using the two and swapping between it when either of the units stopped working. First thing I though that it might be the size of the image (2 or 4GB) that I was writing with dd and it was heating up the electronics, but yesterday a friend of mine stumbled upon the same problem and when his flash reader (different brand and model to mine) stopped working, he unplugged it from the FreeBSD box, plugged it in into his Linux laptop and it worked without a problem. In his view it laid to rest my theory about components heating too much as he did it without giving it a minute of rest. I vaguely recall there were problems with USB support in stable some time ago, but I thought it was all fixed and searching the list and the Internet doesn't give me anything. Both of us were using 7-stable. I can email model of the card readers later (not home at the moment). Basically, I have two questions: 1) is it something that well known and not model related 2) is there a well known reliable model of card reader I can buy. I don't mind the price if the device is rock solid. Any pointers/ideas are greatly appreciated! Regards, Alex. -- "Openness is the foundation and preservative of friendship... Let me claim from you at all times your undisguised opinions." --- William Wilberforce PGP fingerprint: B030 9111 CE41 5C09 2710 E9E6 3120 F406 197B DA8E