Date: Thu, 24 Jun 2010 11:47:43 +0100 From: Alex Markelov <alex.markelov@gmail.com> To: freebsd-stable@freebsd.org Subject: Is there known problem with USB flash readers? Message-ID: <4326E32B-9C38-4C7C-BDB1-8FFF1247C6B4@gmail.com>
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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
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