[cups.general] How do I create a logical printer name?

[Adam Done]

I was reading on the newsgroups list and can not find the cups archives
for the mailing list and found this piece of mail.

Re: CUPS & strange USB printers problemChris SmithSat, 23 Oct 2004
11:05:34 -0400 juice wrote:

        > Look at this:
        > - I,ve got 2 usb printers connected:
        >      crw-rw----  1 root 180, 1 sty  1  1970 lp1
        >      crw-rw----  1 root 180, 0 sty  1  1970 lp0
        > - but something is weird, when I try to localize, which is
        which:Oct 23
        > 12:08:40 [kernel] usb 1-1: new full speed USB device using
        address 5 Oct
        > 23 12:08:40 [kernel] usb 1-1: Product: HP Color Inkjet CP1700
        Oct 23
        > 12:08:40 [kernel] usb 1-1: Manufacturer: Hewlett-Packard Oct
        23 12:08:40
        > [kernel] usb 1-1: SerialNumber: SG245311310T Oct 23 12:08:41
        [kernel]
        > drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer
        dev 5 if 0
        > alt 0 proto 2 vid 0x03F0 pid 0x0312 Oct 23 12:09:23 [kernel]
        usb 1-2: new
        > full speed USB device using address 6 Oct 23 12:09:23 [kernel]
        usb 1-2:
        > Product: hp LaserJet 1300 Oct 23 12:09:23 [kernel] usb 1-2:
        Manufacturer:
        > Hewlett-Packard Oct 23 12:09:23 [kernel] usb 1-2:
        SerialNumber:
        > 00CNBD261757 Oct 23 12:09:23 [kernel]
        drivers/usb/class/usblp.c: usblp0:
        > USB Bidirectional printer dev 6 if 0 alt 1 proto 2 vid 0x03F0
        pid 0x1017
        >
        > BOTH ARE CONNECTED AS /dev/usb/lp0!!
        > does anyone know any kind of solution?
        > my box is gentoo with 2.6.8 kernel
        
        Your "ls -l /dev/usb/" shows that they're not both connected as
        "/dev/usb/lp0" since you have a "/dev/usb/lp1".
        
        Check the output of "lsusb" and match the ID field with the
        vid:pid you see
        in the log. I don't think "drivers/usb/class/usblp.c: usblp0:"
        is telling
        you what you think it is (but I don't claim to know exactly what
        the
        usblp0: means).
        
        As for CUPS there is no need to worry, as when properly set up
        it will not
        use "/dev/usb/lpx" as the DeviceURI but a logical name such as
        usb://HP/color%20LaserJet%203700.
        
        Also, using Gentoo's stock udev rules (I may be assuming too
        much here)
        which printer is lp0 and which is lp1 can easily change
        depending on
        discovery order (I believe the first one seen will be lp0, the
        next lp1,
        etc.). Again this wont trouble CUPS if you're printing to the
        logical
        DeviceURI.
        
        If you want, or need, a stable, always the same, /dev name for
        them for
        other purposes you'll need to write some custom udev rules.
        
        Chris
        


I am also having some issues with printer registration with 3 usb
printers and from what Chris mentioned, I have configured my printers
incorrectly but don't know how configure the printers from
the /dev/usb/lpx to the logical name.

I configure the server through the config files and through kde printmgr
and I can't find any way to use the logical names for my printers.
thanks for any input on this mannor.

-Adam