Date: Sun, 7 Sep 2003 15:48:30 -0400 From: Barney Wolff <barney@databus.com> To: freebsd-current@freebsd.org Subject: Re: usb flashkey disk copy error Message-ID: <20030907194830.GA6420@pit.databus.com> In-Reply-To: <20030907175524.GG39788@funkthat.com> References: <20030907064510.GA702@libertysurf.fr> <20030907073246.GD39788@funkthat.com> <20030907174649.GA4378@pit.databus.com> <20030907175524.GG39788@funkthat.com>
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On Sun, Sep 07, 2003 at 10:55:24AM -0700, John-Mark Gurney wrote: > > > > Make me the third. I have a Sony F707 camera, which I can use on > > 4-stable and with 5-current on a Dell I5000 laptop, but not on 5-current > > on an Asus A7M266-D with world/kernel built 9/4/03. The bad data starts > > at byte 4096, always. The problem has existed for at least a month, > > Ahh, this is useful information. What are the controller types > of the two machines? ohci? uhci? I think it might be ohci, and > it maybe a page miscalculation when dispatching the request. Indeed, failing system has ohci, working has uhci. > Have you looked at the corrupted data? does it apear to be from > some other location, like the kernel? Can't tell offhand, but doesn't look like code - not enough zeroes. As I recall, multiple tries produced the same bad data each time (after umount and re-mount). I can't do more detailed diagnosis right now, but could in a few days. > > perhaps longer; I can't remember if it ever worked on the Asus. But > > the same system runs fine with usb keyboard and mouse - which proves > > nothing as the data rate and amount are so small. So I can't rule > > out hardware as the problem. In a few days I can try booting from > > a 4.8 live cd and see if the hardware works ok. Old-quirks had no > > effect on the problem. > > It's been about two months since I updated USB to use bus_dma. So > you could try checking out the usb code from July 4th or so and see > if it goes away (it probably will). Will try that, again in a few days. -- Barney Wolff http://www.databus.com/bwresume.pdf I'm available by contract or FT, in the NYC metro area or via the 'Net.
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