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
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
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