Fwd: USB to parallel for printer HP LaserJet 4mL

[Hans Petter Selasky]

On 06/16/14 17:10, Matthias Apitz wrote:
> El día Monday, June 16, 2014 a las 12:10:41PM +0200, Hans Petter Selasky escribió:
>
>> What happens if you revert that patch, and do a read first, instead of a
>> write?
>
> I have revert both patches, i.e. the code is now as it was, but has some
> DPRINTF statements at the beginning of the fuctions; here is what
> happens on plug-in, read and write to the device:
>
> plug-in USB cable:
>

Test1)
Can you try to connect an external High-Speed HUB in between?

Test2)
Instead of ulpt.debug, set hw.usb.uhub.debug=15 and collect logs, when 
executing your "echo XXX > /dev/ulpt".

--HPS