No local (e.g.:USB, SCSI, Parallel) backends available

[paines]

Binary package hint: cupsys

Release: Feisty rc5

Neither via Brower http://localhost:631 or kprinter configuration of
my local (USB) printer is possible.

Only SAMBA is availble.

[Sense Egbert Hofstede (sense)]

Thank you for your report. But with this information isn't there much we can do. Could you please add some more information?

[paines (anes-lihovac)]

This is what I do in general to setup printing:

Turn on printer.
dmesg to see if printer is detected and lsusb to list it. usblp was modprobed, so kernel side should be okay.

Then start a Tool to configure cups.
This is kprinter or browser->http://localhost:631.

Add a printer.You are offered a list of backends: Normally there should be
USB, Parallel, SCSI etc. None of them is listed, just SAMBA. Without
those local backenda NO printing is possible.

ANYWAY:

I just found the bug.
/usr/lib/cups/backend consists only :
bluetooth,hp, hpfax and ../../../bin/smbclient.

So I copied /usr/lib/cups/backend-available/usb to /usr/lib/cups/backend
and everything works like expected.

Looks like the cupsys package isn't copying/linking all backends.
Hope this helps to reproduce and fix the bug.

[Till Kamppeter (till-kamppeter)]

You can configure the choice of backends to be used with

sudo dpkg-reconfigure cupsys

current default is all except snmp, scsi, and serial. From the next cupsys package on (1.2.8-0ubuntu3) all backends will be active by default.

Note that package updating keeps the current configuration, so you need to activate the backends manually, even if you update the cupsys package.

I don't know how your configuration got messed up, we never had a cupsys package with usb and parallel deactivated by default.

See also bug 80798.

[Till Kamppeter (till-kamppeter)]

If you update to cupsys 1.2.8-0ubuntu3 the backends snmp, scsi, and serial get automatically acitivated (if other backends are deactivated you have to activate them manually), but only on this update. If you deactivate them afterwards they will stay deactivated on further updates of cupsys.