Date: Thu, 30 Sep 2010 21:38:51 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: freebsd-questions@freebsd.org, Anselm Strauss <amsibamsi@gmail.com> Subject: Re: USB disk on CS5536 unstable Message-ID: <201009302138.51616.hselasky@c2i.net> In-Reply-To: <4CA4E0C3.1050707@gmail.com> References: <4CA3B8F5.80904@gmail.com> <4CA4E0C3.1050707@gmail.com>
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On Thursday 30 September 2010 21:10:59 Anselm Strauss wrote: > Maybe sending it to just the USB list was too specific ... > > On 09/30/10 00:08, Anselm Strauss wrote: > > Hi > > > > I have an ALIX board that has an AMD Geode and the CS5536 companion chip > > with integrated USB on it. When I connect a USB disk I have observed > > various problems. For example when I run fsck_ufs on a 250 GB partition > > the process gets stuck in biord state and fsck reports unreadable > > sectors. When I do a dd over the whole disk and direct it to /dev/null > > it suddenly returns with no error, but having read only a small fraction > > of the disk. I tried it with two different disks and two different ALIX > > boards. I'm pretty sure the disks are okay since I tried them on other > > hardware. > > > > As far as I know there was some trouble with the chip regarding > > timeouts. Under load after some time the USB just stops responding. I > > have tried 8.0 and 8.1. Is there any known problem? How can I track this > > down? > > > > Anselm If you compile the kernel with USB_DEBUG, then there are some sysctls under hw.usb.ehci which you can tweak. Needs to be set before boot. --HPS
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