CUPS & strange USB printers problem

[Michael Sweet]

Alex Chejlyk wrote:
> ...
> I have a similar issue where I have two usb Epson Photo Stylus R1800 printers. Cups version 1.2.2
> When I attempt to configure the first usb port:
> (EPSON Stylus Photo R1800 USB #1 (Epson Stylus Photo R1800))
> for EPSR1800-1, everything seemingly configures properly, but the system changes the printers usb port to the second usb port:
> (EPSON Stylus Photo R1800 USB #2 (Epson Stylus Photo R1800))
> All jobs keep going to port 2, EPSR1800-2. The cups device URI shows as:
> usb://EPSON/Stylus%20Photo%20R1800
> Is it because of the length of the URI that the cups system can't differentiate between the two ports? I tried using usb://dev/usb/lp0, but Cups 1.2.2 won't allow that if the Device ID is available....

Epson printers don't provide a unique serial number we can use, so
currently you are SOL.  Apple's USB code can generate a serial number
if one is missing, and hopefully we will be able to do so as well
when we start using libusb or the raw kernel interfaces.

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products           mike at easysw dot com
Internet Printing and Document Software          http://www.easysw.com