Double printing problem after CUPS update

[Alexander Urban]

> Alexander Urban wrote:
>
> >> Alexander Urban wrote:
> >>
> >> > Hi there,
> >> >
> >> > I have a problem after update to CUPS 1.5. (I think the old one was
> >> > 1.4.7 but not sure)
> >> >
> >> > Our "workgroup" printer is a KM bizhub c452 (for 250 users, ~220 of
> >> > them Windows users doing fine, and 20 Macs and 10 Linuxes).
> >> >
> >> > With CUPS 1.5, everything is printed twice, I don't know why. On the
> >> > CUPS versions used earlier, everything was printed once.
> >> >
> >> > Problem occurs on more than one machine - all iMacs (about a dozen) and
> >> > some linux boxes.
> >> >
> >> > How can I debug this? I'm new to debugging in printer environment, so
> >> > step-by-step procedures would be appreciated.
> >> >
> >> > Kind regards,
> >> >
> >> > Alexander
> >>
> >> On one of the boxes where this issue occurs, do the following:
> >>
> >> - execute
> >>   cupsctl --debug-logging
> >>   (to set logging to debug)
> >> - print a file
> >> - after the print is complete, execute
> >>   cupsctl --no-debub-logging
> >> - post the portion of the /var/log/cups/error_log which contains the
> >> messages related to the test job.
> >>
> >> Helge
> >
> > Got it: http://pastebin.com/KR4WnZks
> >
> > Alex
>
> As i currently have no running CUPS 1.5,I can only guess:
> I suspect that the printer, though rejecting IPP 2.0, still internally keeps
> the request and processes both the IPP 2.0 and the IPP 1.1 request which
> then would cause the double printing (the Bizhubs internally save the print
> data before printing, AFAIK).
>
> To further settle down the issue, I'd suggest the following:
> (1) check if other vendor's printers that support IPP (or pretend to do so)
> reveal the same issue (the messages regarding the IPP version are of class
> INFO, so a log-debug is not necessary).
> (2) for a test, change the *cupsFilter line(s) in the Bizhub's PPD to a
> comment (replace the *cupsFilter by *%cupsFilter) and test if the issue
> remains.
>
> Helge
>

I'm sorry, I have no other printer at hands. And then, in the PPD there is no cupsFilter line.

I got another linux box with the problem and a unique setup:

-> It has CUPS 1.4.3(!)
-> It has the c452 installed twice - via SMB and IPP, and both show the double printing problem.

http://pastebin.com/8tJrhvxW

The problem with that is that in April 2011, there was no problem whatsoever. I know one hundred percent sure, because the printer was new then, and just worked out of the box everywhere. And 1.4.3 was already installed on this box as of December 2010 - and printed correctly when the printer was new.