FreeBSD 5.3 USB printing problem

[timlee]

I have a PC (Asus A7M266 motherboard, AMD / VIA chipset) with FreeBSD
5.3-RELEASE-p4 (kernel is like GENERIC, but has eisa and a bunch of storage
stuff removed, and sound and COMPAT_LINUX added -- no changes to USB stuff
from GENERIC) with a USB printer (Brother HL-5050).  USB printing to the
same printer worked when the same computer had FreeBSD 4.8 on it.  The
computer's USB stuff in dmesg is (after booting up with the printer on):

	uhci0: <VIA 83C572 USB controller> port 0xb400-0xb41f irq 9 at device 4.2 on pci0
	uhci0: [GIANT-LOCKED]
	usb0: <VIA 83C572 USB controller> on uhci0
	usb0: USB revision 1.0
	uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
	uhub0: 2 ports with 2 removable, self powered
	ulpt0: Brother HL-5050, rev 2.00/1.00, addr 2, iclass 7/1
	ulpt0: using bi-directional mode
	uhci1: <VIA 83C572 USB controller> port 0xb000-0xb01f irq 9 at device 4.3 on pci0
	uhci1: [GIANT-LOCKED]
	usb1: <VIA 83C572 USB controller> on uhci1
	usb1: USB revision 1.0
	uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
	uhub1: 2 ports with 2 removable, self powered

Now, when I boot up the computer with the printer on, or turn on the
printer for the first time after booting up, usbdevs shows:

	addr 1: UHCI root hub, VIA
	 addr 2: HL-5050, Brother
	addr 1: UHCI root hub, VIA

Then when I cat a text file to /dev/unlpt0, the printer's green light
turns yellow, but nothing gets printed out.

When I cat a text file to /dev/ulpt0, the shell gets stuck (and the
printer's light turns green).  Afterward, usbdevs shows:

	addr 1: UHCI root hub, VIA
	 addr 2: product 0x0017, Brother Industries
	addr 1: UHCI root hub, VIA

(pausing a long time between the first and second lines).  If the printer
is turned off and turned back on, usbdevs then shows:

	addr 1: UHCI root hub, VIA
	 addr 0 should never happen!
	addr 1: UHCI root hub, VIA

and dmesg shows:

	uhub0: device problem, disabling port 1

Neither lpd nor CUPS works either.

What else should I try?

Timothy J. Lee (timlee at sonic.net)