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Date:      Sat, 14 Jun 2014 08:39:42 +0200
From:      Hans Petter Selasky <hps@selasky.org>
To:        Matthias Apitz <guru@unixarea.de>
Cc:        freebsd-usb@freebsd.org
Subject:   Re: Fwd: USB to parallel for printer HP LaserJet 4mL
Message-ID:  <539BEE2E.9050108@selasky.org>
In-Reply-To: <20140613184921.GA1748@La-Habana>
References:  <20140601130025.GA2255@La-Habana> <538B6693.5010108@selasky.org> <20140601175846.GA2104@La-Habana> <538B6C4F.9050205@selasky.org> <20140602150802.GA1950@La-Habana> <538C9A83.7050606@selasky.org> <20140610054403.GA1589@La-Habana> <539964AB.1030909@selasky.org> <20140613184921.GA1748@La-Habana>

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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



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