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From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-usb@freebsd.org
Date: Wed, 9 Sep 2009 16:34:00 +0200
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Cc: freebsd-gnats-submit@freebsd.org, Tomas Verbaitis <tomas@megalogika.lt>
Subject: Re: usb/138659: uftdi driver broken in RELENG_8/CURRENT
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On Wednesday 09 September 2009 14:32:22 Tomas Verbaitis wrote:
>  - even that device is answering requests slower and slower until it stalls
> completely within 1 hour

What is printed in dmesg?

Try enabling uftdi debugging:

sysctl hw.usb.uftdi.debug=15

Any errors?

--HPS