Date: Tue, 28 Jan 2014 04:12:36 +0100 From: Polytropon <freebsd@edvax.de> To: freebsd@dreamchaser.org Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: upside down duplexed page -- CUPS issue (was Re: ps problem) Message-ID: <20140128041236.780f0dfe.freebsd@edvax.de> In-Reply-To: <52E5FC6B.3050600@dreamchaser.org> References: <52E55D4F.8060803@dreamchaser.org> <alpine.BSF.2.00.1401261331160.29800@wonkity.com> <52E5E5EA.3060101@dreamchaser.org> <20140127060551.80c21869.freebsd@edvax.de> <52E5FC6B.3050600@dreamchaser.org>
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On Sun, 26 Jan 2014 23:27:55 -0700, Gary Aitken wrote: > On 01/26/14 22:05, Polytropon wrote: > > On Sun, 26 Jan 2014 21:51:54 -0700, Gary Aitken wrote: > > >> 2. If I print it using > >> /usr/local/bin/lpr duplex.ps > >> it comes out with the duplexed page upside down. > > > > This will use CUPS's settings which may add a "preample" > > of PS to the printer to reflect those settings, for example > > which "duplexing manner" (long or short edge "wrap") will > > be used. > > Except that in this case the %cupsJobsTicket: comment should > instruct it to use long-edge duplexing, which should override > any cups default. The default for this printer is no-duplex, > so if it overrides it shouldn't duplex at all. Yes, "should", but the reality of complex software teaches that in many cases, things don't work as they should. :-) It would be required to capture the "postprocessed" PS that CUPS sends to the printer to be sure about what _exactly_ will be sent to the printer. Sometimes printers themselves can change things (duplex on/off, short/long edge etc.). > > To find out if those settings exist, open a web browser (bah) > > and go to http://localhost:631 where you can find the CUPS > > administration web pages. Check your printer's settings > > carefully. (I know there's also a lpadmin tool, but haven't > > bothered learning it because I tend to avoid CUPS whenever > > possible, because when you have a PS-capable printer, it's > > probably just useless overhead.) > > Checked that already, and it is set by default to not duplex. > So presumably its preamble would not change the duplexing. > But the document itself has embedded duplexing along the long > edge. Why would that result in the short-edge behavior? The wonder of modern software. :-) No, honestly: If you already have a good printer that can understand PS, and you don't require a _specific_ CUPS-only feature, I'd suggest to get rid of CUPS and use the system's printer spooler. You'll probably don't need any printer filter here. > >> If I create a simple 2 page document in openoffice, > >> when printing from openoffice, I see the following: > >> > >> 3. If printed duplexed direct from OO, duplexed pages are upside down. > > > > As expected. > > Why? Default is no duplex, but I turned long edge duplex on > in the print dialog. Strange case of conflicting pre- and postprocessing maybe? PS content changes and precedence? > >> 4. If printed to a pdf file and /usr/bin/lpr is used on the pdf, > >> no duplexing occurs -- I get two separate sheets. > > > > This could be explained by the way OO generates PDF and how > > the printer filters turn that into PS. Or if your printer is > > also capable of speaking PDF (directly), no mentioning that > > it should use duplex is in the PDF input. > > ok, at least that part makes sense. /usr/bin/lpr will ignore the > $cupsJobTicket: statement. Correct. It will send the PS _as is_ to the printer and let it deal with the PS content, which is defined by the PS interpreter's implementation "inside the printer". > >>From your PS source: > > > >> %cupsJobTicket: media=Letter sides=two-sided-long-edge > > > > There's also two-sided-short-edge (corresponding to the setting > > accessible via localhost:631). > > That's what I don't understand. > It says two-sided-long-edge. Why would it be performing as if > it said two-sided-short-edge? I'd imagine that there's a conflicting setting somewhere in the CUPS configuration. Instead of manually searching through the web interface, you could also search for options related to "duplex", "edge", or "tumble" in /usr/local/etc/cups in the configuration files and maybe the PPDs employed. For example, the string "*DefaultDuplex: DuplexNoTumble" looks promising. There are other entries related to that concept. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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