$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