Public bug reported:

I am using ubuntu 18.04 LTS. After an automatic update of libcups (and
related) from 2.2.7-1ubuntu2 to 2.2.7-1ubuntu2.1 I have been unable to
print double-sided, e.g., printing a pdf from evince using the standard
printer dialog. I have not changed the printer or printer drivers during
this and before everything was working fine.

I suspect that the option that is used for duplex printing is has changed and 
is wrong now. It seems to be "DuplexNoTumble", see
$ lpoptions -l  | grep -i duplex
Duplex/Duplex: *None DuplexNoTumble DuplexTumble

After using evince and the standard printer dialog to issue a print job where I 
selected "Long Edge (standard)" for the "Two Sided" option, I see the following 
in the cups error log:
$ cat /var/log/cups/error_log | grep -i duplex
D [20/Jul/2018:09:30:36 +0200] [Job 39] argv[5]="RPSBitsPerPixel=1BitsPerPixel 
InputSlot=Auto RPSRGBcorrect=DetailBright RPSDitherType=Auto RIwmSize=36 
RIBannerPageMediaType=Auto LockedPrintPassword=None RIWMText=Confidential 
Rcmyksimulation=Off RIwmAngle=45Deg Booklet=None RPSColorRendDict=Auto 
RIPaperPolicy=PromptUser RPSBlackMode=gray noRPSColorUniversalDesign 
PageSize=A4.FullBleed JobType=Normal noRIBannerPagePrint RIPrintMode=0rhit 
MediaType=Auto RIRotateBy180=Off RIwmTextStyle=Gray RIPunch=None 
RIBannerPageInputSlot=Auto ColorModel=Gray Rimagesm=Off number-up=1 
noRPSBlackOverPrint RIOrientOvr=Off StapleLocation=None Resolution=600dpi 
DocServerPassword=None RPSColorSep=None RIFoldType=None UserCode=None noCollate 
Duplex=DuplexNoTumble RIwmFont=HelveticaB RIWatermark=Off OutputBin=Default 
job-uuid=urn:uuid:10bf31c1-fbcf-31fd-4093-04b4cc248849 finishings=53 
job-originating-host-name=localhost date-time-at-creation= 
date-time-at-processing= time-at-creation=1532071836 
time-at-processing=1532071836"
D [20/Jul/2018:09:30:36 +0200] [Job 39] Added option Duplex
D [20/Jul/2018:09:30:36 +0200] [Job 39] Pondering option 
\'Duplex=DuplexNoTumble\'
D [20/Jul/2018:09:30:36 +0200] [Job 39] Running command line for pstops: pstops 
39 username \'filename\' 1 \'RPSBitsPerPixel=1BitsPerPixel InputSlot=Auto 
RPSRGBcorrect=DetailBright RPSDitherType=Auto RIwmSize=36 
RIBannerPageMediaType=Auto LockedPrintPassword=None RIWMText=Confidential 
Rcmyksimulation=Off RIwmAngle=45Deg Booklet=None RPSColorRendDict=Auto 
RIPaperPolicy=PromptUser RPSBlackMode=gray noRPSColorUniversalDesign 
PageSize=A4.FullBleed JobType=Normal noRIBannerPagePrint RIPrintMode=0rhit 
MediaType=Auto RIRotateBy180=Off RIwmTextStyle=Gray RIPunch=None 
RIBannerPageInputSlot=Auto ColorModel=Gray Rimagesm=Off noRPSBlackOverPrint 
RIOrientOvr=Off StapleLocation=None Resolution=600dpi DocServerPassword=None 
RPSColorSep=None RIFoldType=None UserCode=None Duplex=DuplexNoTumble 
RIwmFont=HelveticaB RIWatermark=Off OutputBin=Default 
job-uuid=urn:uuid:10bf31c1-fbcf-31fd-4093-04b4cc248849 finishings=53 
job-originating-host-name=localhost date-time-at-creation= 
date-time-at-processing= time-at-creation=1532071836 
time-at-processing=1532071836\'
D [20/Jul/2018:09:30:37 +0200] [Job 39] slow_collate=0, slow_duplex=0, 
slow_order=0
D [20/Jul/2018:09:30:37 +0200] [Job 39] Found: %%BeginFeature: *Duplex 
DuplexNoTumble
D [20/Jul/2018:09:30:37 +0200] [Job 39] Option: Duplex=DuplexNoTumble

Moreover, when trying to print from console I discovered that
$ lp -o Duplex=DuplexNoTumble whatever.pdf
prints single-sided, whereas
$ lp -o sides=two-sided-long-edge whatever.pdf
successfully prints double-sided.

** Affects: cups (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: duplex

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https://bugs.launchpad.net/bugs/1782719

Title:
  Duplex not working upon update to 2.2.7-1ubuntu2.1

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