$OpenBSD: README,v 1.6 2011/03/09 13:05:20 ajacoutot Exp $
Using CUPS under OpenBSD
========================
If you want to print to non-Postscript printers or use CUPS bundled PPD
files (i.e. drivers), you'll need to install ghostscript. You will also
most probably want to install the foomatic-filters package which
provides a universal filter script.
Depending on your printer model you may need to install some driver
package like (non-exhaustive list): hplip, gutenprint, foo2zjs, splix...
To be able to use CUPS printers from gtk+2 applications, the gtk+2-cups
package needs to be installed.
This package supports both ulpt(4) and libusb for printing to USB
devices. ulpt(4) should work out of the box, however:
* ulpt(4) does not support select() which is used by CUPS to know when
the device can accept more data (http://www.cups.org/str.php?L3028)
* it won't be able to automatically detect the corresponding driver/PPD
* it is deprecated upstream in favor of libusb
Required steps for libusb based printing
----------------------------------------
If you choose to make your USB printer use libusb, you need to allow the
_cups user access to the corresponding USB endpoint. To do so, find
where your printer is attached to using `sudo usbdevs -vd` then change
the ownerships accordingly.
e.g.
Controller /dev/usb3:
addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x8086), rev 1.00
uhub3
port 1 powered
port 2 addr 2: full speed, self powered, config 1, USB MFP(0x082f), EPSON(0x04b8), rev 1.00, iSerialNumber L83010704250947490
ulpt0
ugen0
$ sudo chown _cups /dev/ugen0.* /dev/usb3
The reason we are changing the user and not the group is that it will
allow for multi-function devices to work for both printing and scanning
(e.g. by being owned by _cups:_saned).
To preserve your changes after a system update, use rc.local(8).
e.g. for a multi-function printer/scanner add the following lines:
chown _cups:_saned /dev/ugen0.* /dev/usb1
