[cups-devel] Duplex printing on Brother HL-3150cdw

> Eric,
> 
>>> The driver isn't exposing 2-sided printing using the proper,
>>> supported option name (Duplex).  Please report the bug to 
>>> Brother...

> Those hacks date before Adobe standardized the Duplex option in the
> mid 1990's.  They exist solely to support older printers from
> popular printer/RIP manufacturers of the day, and as it is now 2016
> we have no desire or plan to extend this list to include Brother's
> incorrect choice.
>
> (and the problem with being too liberal in what we accept is that
> you'll end up getting the wrong behavior... Modern computer science
> does not blindly follow that goal...)

Too bad. I still find being liberal and correct is the good thing to 
do, but anyway, I get your point. I will e-mail Brother to point out
that BRDuplex is not a good option name.

In the meantime, I fixed the issue on my computer. For the benefit of 
other people having similar printers, let me just write down what I 
did:

1) Edit the .ppd file corresponding to your printer in /etc/cups/ppd, 
and change all occurence of "BRDuplex" into "Duplex". Change also 
"DefaultBRDuplex" into "DefaultDuplex".

2) Apply the small patch at the end of the mail to the file 
       /usr/lib/cups/filter/brother_lpdwrapper_hl3150cdn
(Nota: I also changed the identical file that sit in .../lib64/...,
but even though my computer runs a 64bit cups, it is the /lib/ version
which seems to be used.)

3) restart cups. To be extra sure, I stopped cups, removed /var/cache/cups
and restarted cups, but maybe that was overkill.

Éric Brunet

Patch to apply to /usr/lib/cups/filter/brother_lpdwrapper_hl3150cdn
====================================================================
--- brother_lpdwrapper_hl3150cdn.orig	2016-01-15 20:16:42.167405090 +0100
+++ brother_lpdwrapper_hl3150cdn	2016-01-18 17:37:00.803136665 +0100
@@ -123,12 +123,17 @@
 fi
 
 CUPSOPTION=`echo "$5 Copies=$4" | sed -e 's/BrMirror=OFF/MirrorPrint=OFF/' -e 's/BrMirror=ON/MirrorPrint=ON/' -e 's/BrChain/Chain/' -e 's/BrBrightness/Brightness/' -e 's/BrContrast/Contrast/' -e 's/BrHalfCut/HalfCut/' -e 's/BrAutoTapeCut/AutoCut/' -e 's/BrHalftonePattern/Halftone/' -e 's/Binary/Binary/' -e 's/Dither/Dither/' -e 's/ErrorDiffusion/ErrorDiffusion/' -e 's/BrSheets/Sheets/' -e 's/multiple-document-handling/Collate/' -e 's/separate-documents-collated-copies/ON/' -e 's/separate-documents-uncollated-copies/OFF/'`
+
+# Turn any Duplex option into BRDuplex
+CUPSOPTION=`echo "$CUPSOPTION" | sed -e 's/\bDuplex\b/BRDuplex/'`
+
 if [ -e "/opt/brother/Printers/hl3150cdn/cupswrapper/brcupsconfpt1" ]; then
-	
+# Copy the ppd, replacing Duplex into BRDuplex	
+  sed -e 's/\bDefaultDuplex\b/DefaultBRDuplex/' -e 's/\bDuplex\b/BRDuplex/' $PPDC > /tmp/br_ppd_$$
   if [ $DEBUG = 0 ]; then
-     /opt/brother/Printers/hl3150cdn/cupswrapper/brcupsconfpt1  HL3150CDN  $PPDC 0 "$CUPSOPTION" "hl3150cdn" $BRPRINTERRCFILE>> /dev/null
+     /opt/brother/Printers/hl3150cdn/cupswrapper/brcupsconfpt1  HL3150CDN  /tmp/br_ppd_$$ 0 "$CUPSOPTION" "hl3150cdn" $BRPRINTERRCFILE>> /dev/null
   else
-     /opt/brother/Printers/hl3150cdn/cupswrapper/brcupsconfpt1  HL3150CDN  $PPDC $LOGCLEVEL "$CUPSOPTION" "hl3150cdn" $BRPRINTERRCFILE>>$LOGFILE
+     /opt/brother/Printers/hl3150cdn/cupswrapper/brcupsconfpt1  HL3150CDN  /tmp/br_ppd_$$ $LOGCLEVEL "$CUPSOPTION" "hl3150cdn" $BRPRINTERRCFILE>>$LOGFILE
   fi
 fi
 
@@ -137,6 +142,7 @@
     echo brhl3150cdnrc_$$   > /tmp/hl3150cdn_latest_print_info
     cat  /tmp/brhl3150cdnrc_$$  >> /tmp/hl3150cdn_latest_print_info
     rm -f /tmp/brhl3150cdnrc_$$
+    rm -f /tmp/br_ppd_$$
 
     if [ $LOGLEVEL -gt 2 ];  then
 	   if [ $LOGFILE != "/dev/null" ]; then