hplip setup problems

[Isaac Mushinsky]

I've tried freebsd-questions, but to no avail so far, so please excuse my
posting here in the hope to find people more familiar with this...

I am having trouble setting up HP Photosmart C4280 all-in-one device for
printing. hpssd, cups are started in the correct order. Device node
permissions seem to be correct too.

1. This is an all-in-one device. (I did not try the scanner setup yet)
2. ulpt, umass, uscanner modules are not in kernel and not kld-loaded.
3. Machine is FreeBSD 7-stable/amd64.
4. hplip is 2.8.2

$ usbdevs
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, Intel
addr 1: EHCI root hub, Intel
 addr 2: Photosmart C4200 series, HP
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, Intel
addr 1: UHCI root hub, Intel
addr 1: EHCI root hub, Intel
There is a ppd file for these series with the hplip distribution.
hpssd, cups started in the order needed. hp-setup detects the printer, and
then says 'Unable to create queue'. CUPS web interface actually adds the
printer, but then cannot print test page to it. cups user runs hpssd (I
tried root too).
/var/log/messages has:
Mar 25 23:57:56 omsk python: io/hpmud/musb.c 135: unable
get_string_descriptor -5: Input/output error
Mar 25 23:57:56 omsk python: io/hpmud/musb.c 1951: invalid serial id string
ret=-5


With USB_DEBUG=4 (for libusb), the hp-setup  fails like this:

usb_os_find_devices: Found /dev/ugen0 on /dev/usb3
usb_control_msg: 128 6 512 0 0x7fffffff9ed0 8 1000
usb_control_msg: 128 6 512 0 0x80131d080 124 1000
usb_control_msg: 128 6 770 1033 0x7fffffff9e40 255 5000
usb_control_msg: 128 6 771 1033 0x7fffffff9e40 255 5000
USB error: error sending control message: Input/output error
...
device `hpaio:/usb/Photosmart_C4200_series?serial=0' is a Hewlett-Packard
Photosmart_C4200_series all-in-one

This 'serial=0' seems to be the result of failed usb_control_msg call.

 I exhibited here all relevant output (/var/log/messages, usbdevs, ls -l
/dev etc.):
http://omsk.mushinsky.net/hplip-trouble

Any help is appreciated.
-isaac-