I have similar problems with my Brother HL1650 as well.  It probes as:

ulpt0 at uhub0 port 1 configuration 1 interface 0
ulpt0: Brother HL-1650_1670N series, rev 1.00/1.00, addr 3, iclass 7/1
ulpt0: using bi-directional mode

About every-other time I attempt to print, BSD simply swallows things sent
to lpd (which goes to ulpt or ulpa...same result with either one).  Usually
re-plugging the USB cable makes it start working, sometime lpc stop/start
will make it start working.  Sometimes, I get the "disabling port 1" message
too.

    ScottE


----- Original Message -----
From: "David Brownlee" <abs@formula1.com>
To: <current-users@netbsd.org>
Sent: Monday, August 12, 2002 7:18 AM
Subject: usb lpd strangeness in 1.6_BETA5 compared to 1.5.x


> Upgraded a couple of machines from 1.5.3 to 1.6_BETA5 and
> seeing problems with the usb->printer cable
>
> ulpt0 at uhub0 port 1 configuration 1 interface 0
> ulpt0: Belkin Components product 0x0002, rev 1.00/1.04, addr 2, iclass 7/1
> ulpt0: using bi-directional mode
>
> It worked fine under 1.5.3, but under 1.6 it sometimes seems to
> 'go to sleep', recording the printer as offline and only
> unplugging and reinserting the usb cable will fix it. On one
> machine that doesn't even work - it gives:
> 'uhub0: device problem, disabling port 2'
>
> I've tried it with a full 1.6 installation and a 1.6 kernel
> with 1.5 userland so I think that reasonably ties it to a
> kernel rather than an lpd issue.
>
> Does anyone have any suggestions on how to proceed with this?
>
>
> --
> David/absolute abs@formula1.com
>
>