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Message-ID: <Pine.LNX.4.44L0.0809021508480.5583-100000@iolanthe.rowland.org>
Date: Tue, 2 Sep 2008 15:19:47 -0400 (EDT)
From: Alan Stern <stern@...land.harvard.edu>
To: Thiago Galesi <thiagogalesi@...il.com>
cc: Alex Buell <alex.buell@...ted.org.uk>,
<linux-kernel@...r.kernel.org>, Robert Hancock <hancockr@...w.ca>,
Tomas Styblo <tripie@...n.org>, <linux-usb@...r.kernel.org>,
<usb-storage@...ts.one-eyed-alien.net>
Subject: Re: [PATCH] JMicron JM20337 USB-SATA data corruption bugfix - device
152d:2338
On Tue, 2 Sep 2008, Thiago Galesi wrote:
> Ok, I've created a USBMON log, here it is here:
> http://duskblue.org/jmicron_log_k3b.log
>
> (I guess it is a little too big - 70k - to be placed in the message directly)
>
> Using k3b, since it seems it is the program which causes more errors.
> DVD is completely unusable after I did this, dmesg has sr 4:0:0:0:
> rejecting I/O to offline device
>
> If I reload the drivers manually I have the reader back without
> rebooting the machine.
I can't tell exactly what's happening, but your device is sending back
a lot of error messages (Not Ready - Medium not present). Maybe it
doesn't recognize the type of disc you have loaded.
Also, there appears to be some program querying the state of your
device 7 or 8 times every two seconds. I can't tell what that is; it
might be hal or it might be your k3b program.
However what finally caused the failure was a command (0xAC) which I
don't recognize and apparently your drive doesn't recognize either.
Alan Stern
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