51 lines
2.0 KiB
Plaintext
51 lines
2.0 KiB
Plaintext
$OpenBSD: README,v 1.3 2010/12/30 12:55:03 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:
|
|
* it needs to claim the entire USB port, so it will not be possible to
|
|
access the scanner part of a multi-function device
|
|
* 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'll have to
|
|
disable ulpt(4) in your kernel - see config(8) - which will allow libusb
|
|
to claim your device.
|
|
|
|
Since USB printing will be handled by libusb, you need to allow the
|
|
_cups user rw access to the corresponding USB endpoint. To do so, find
|
|
where your printer is attached to using dmesg(8) then change the
|
|
ownerships accordingly.
|
|
ugenX = /dev/ugenX
|
|
uhubX = /dev/usbX
|
|
|
|
e.g.
|
|
$ dmesg | grep ugen
|
|
ugen0 at uhub1 port 1 "EPSON USB MFP" rev 1.10/1.00 addr 2
|
|
$ sudo chown _cups /dev/ugen0.* /dev/usb1
|
|
|
|
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
|