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On Wed 23 Mar 2022 at 13:01:18 -0400, Rick Stanley wrote: > Now neither option works correctly executing from the command line. > "lpr -o sides=two-sided-long-edge test.pdf" > "lpr -o sides=one-sided test.pdf" > > And same for lp. Thank you for your report, Rick. What is the printer make and model? The situation is that neither command gives double-sided printing? > Printing from Okular works correctly as expected. There is a slight difference between your lp command and what Okular does. Okular sends a PostScript file to the ptinter. Not that I can see why that should make any difference, but printing from Evince or Firefox sens a PDF. You could try that. Anyway, let's have a log. Enable debug logging with cupsctl --debug-logging Empty error_log with >/var/log/cups/error_log Print and send error_log as an attachment after compressing it. Regards, Brian.