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Date: Sat, 14 Jun 2014 08:39:42 +0200
From: Hans Petter Selasky <hps@selasky.org>
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To: Matthias Apitz <guru@unixarea.de>
Subject: Re: Fwd: USB to parallel for printer HP LaserJet 4mL
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On 06/13/14 20:49, Matthias Apitz wrote:
> El día Thursday, June 12, 2014 a las 10:28:27AM +0200, Hans Petter Selasky escribió:
>
>>> I've pluged'in the USB-2-parallel cable into a Win7 laptop and Win
>>> recogniced the model of the printer at the other end of the cable fine
>>> as HP LasetJet 4ML and prints ofc fine too. I'm surprised, btw, that the
>>> toner after so many years in the cellary is still fine :-)
>>>
>>> And now?
>>
>> Maybe you can sniff the USB traffic on the Win7 laptop, so that we can
>> compare the order of USB events.
>
> I have tried with no luck the tool from
>
> http://sourceforge.net/projects/usbsnoop/
>
> and as well the way described here with M$ tools:
>
> http://blogs.msdn.com/b/usbcoreblog/archive/2009/12/04/etw-in-the-windows-7-usb-core-stack.aspx
>
> I can not get any use full traffic dump from them. Someone could point
> me to a working tool for Win7. I know, our list deals with FreeBSD
> software, but it is some kind of re-engineering why Win7 works with a
> device and FreeBSD does not :-)
>
> Thanks
>
> 	matthias
>

Hi,

You might be able to remove "ulpt" driver from the kernel config and 
also "mv -i /boot/kernel/ulpt.ko /boot/kernel/ulpt.ko.old" and run Win7 
from Virtualbox or a VM and see what happens. Then you can sniff the USB 
traffic in the VM USB host.

--HPS