On Tuesday 08 Jul 2003 4:57 am, Carroll Grigsby wrote:
> On Monday 07 July 2003 03:49 pm, James Sparenberg wrote:
> > On Mon, 2003-07-07 at 16:13, Pierre Fortin wrote:
> > > Just a heads up...
> > >
> > > I have not fully analyzed this; but my HP 5550 (USB2.0) printers will
> > > not work if connected to a USB/PCMCIA port. My camera, external HDs,
> > > etc, all work off the SIIG USB PCMCIA 4-port hub; but the printers will
> > > only work if connected to the laptop's builtin USB1.1 port.
> > >
> > > CUPS reports "Unable to open USB device "usb://hp/deskjet%205550": No
> > > such device", even after redoing the printer setup via
> > > http://localhost:631
> > >
> > > Just moving the cable from the PCMCIA to the builtin port allows queued
> > > jobs to print.
> >
> > Pierre,
> >
> > Is it possible.. (and this is a real stab in the dark.) that the
> > printer doesn't recognize the hub as a real USB port? So it doesn't
> > "activate". I've got an Epson that does that no matter what OS is on
> > the other end. When I boot the box with the printer connected to the
> > USB hub... I don't get all of the chugging and churning I normally get
> > when it's directly connected. We got rid of the hub plugged it in
> > directly and ... poof it works. Go figure.
> >
> > James
Ah well, rather annoyingly when I was having this problem a month or two back
I was connecting to the USB port on the pc. I never did resolve the problem
- which was that the printer would freeze the whole m/c. It is now connected
via a USB hub, W2k and samba :o(
regards
Daryl
>
> I recall reading that some external USB hubs are not powered, and therefore
> are only usable with passive devices. That might explain James' problem,
> but probably not Pierre's.
> -- cmg
--
"A fractal is by definition a set for which the Hausdorff Besicovitch
dimension strictly exceeds the topological dimension."
-- Mandelbrot, "The Fractal Geometry of Nature"
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