[Bug 205179] print/cups: duplex printing is wrong on HP X451DW: binding atop rather than left/flipped pages

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205179

            Bug ID: 205179
           Summary: print/cups: duplex printing is wrong on HP X451DW:
                    binding atop rather than left/flipped pages
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: ohartman at zedat.fu-berlin.de

Using most recent CURRENT (11.0-CURRENT FreeBSD 11.0-CURRENT #0 r292014: Wed
Dec  9 11:17:26 CET 2015 amd64) and most recent ports tree (Revision: 403440)
and an updated ports collection via traditional port building and updating on a
daily/weekly basis, CUPS printing system is doing wrong with HP OfficeJet Pro
X451dw.

CUPS is installed as follows:

cups-2.0.3_1
cups-base-2.0.3_3
cups-client-2.0.3_2
cups-filters-1.2.0
cups-image-2.0.3_2
cups-pstoraster-8.15.4_8
gutenprint-cups-5.2.10_1
hplip-3.14.10_1

Printing DIN A4 paper.

The error:

The HP OfficeJet X451dw is equipted with a duplexer. Using CUPS, one has to
enable the duplexer in the standard configuration. Usually, duplexing allows
two types of binding: left binding - this is as we now it when we read a book,
the pages "get bound" at the left hand edge of the page 9flipping the page to
the left reveals the back of the page and it is still readable without turning
it 180 degree). Or we can choose a "top binding" - which means, the back of a
double-sided page is still readable without turning you 180 degree, if you flip
the page upward - like a flipchart or a wall-calender.

I figured out, using FreeBSD's (outdated) CUPS 2.0.3 system (CUPS has > 2.1
now), that duplex printing in conjunction with the driver PPD provided by HP
via port print/hplip-3.14.10_1, namely 
/usr/local/share/ppd/HP/hp-officejet_pro_451_series-ps.ppd.gz, does wrong!

If someone configures a print queue the classical way for duplex printing,
setting duplexing to enabled and set binding to left - as one would expect to
do, the binding on small PDFs is top (like the flipchart/wall-calender).
Switching to "binding top" is then as expected. But this does not hold for
larger PDFs like a book with ~300 pages (I tested only on that sizes). They get
always print like flipcharts when doing duplex printing!

I do not have the time to investigate this deeper, so I did not check on PS
files - it doesn't matter, the printing is wrong anyway and PDF is very common.
I tried the very same printer with the very same configuration, but this time
with Linux Ubuntu 15.10, which comes with CUPS 2.1 (didn't check for the minor
numer) and the configured hplip (version unknown). The problem I face with
FreeBSD's port selection is not present there.

The print system is rendered useless in this case.

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