[cups.bugs] Identical printers, sub backend

[Johannes Meixner]

Hello,

On Dec 30 02:57 Fernando wrote (shortened):
> The output of backend usb is:
> direct usb://Xerox/Phaser%203124 ... "Xerox Phaser 3124 USB #1" ...
> direct usb://Xerox/Phaser%203124 ... "Xerox Phaser 3124 USB #2" ...
....
> With udev it's possible to assign the same name regardless
> of the order in which the device gets detected

Looks like a good idea for a workaround for USB printers
which don't report the serial number in the 1284 device ID.

1.
Use udev to assign a fixed device files, e.g.
/dev/usb/name.serial1
and
/dev/usb/name.serial2

2.
Use a fixed device file URI via file:... as follows:
- stop the cupsd
- add "FileDevice Yes" to /etc/cups/cupsd.conf
- start the cupsd
- set the DeviceURI to file:/dev/usb/name.serial{1,2} via "lpadmin -v"

Note that the file DeviceURI is insecure, see "FileDevice" at
http://www.cups.org/documentation.php/ref-cupsd-conf.html


Kind Regards
Johannes Meixner
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