The file is /etc/cups/cupsd.conf (d at the end) can you attach it's content together with a complete cups error log after trying to print duplex with debugging enabled as described here: https://wiki.ubuntu.com/DebuggingPrintingProblems. Can your follow the instructions of the sections "CUPS error_log", "Capturing print job data", and "Getting the data which would go to the printer". Can you also attach the file(s) which you tried to print? Please do this for all situations with problems (LibreOffice, evince, ...).
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1390994 Title: Lost ability to print duplex Status in “cups” package in Ubuntu: Incomplete Bug description: A recent update (about a week or two ago) has resulted in my HP 8600 printer no longer printing double-sided. All the configuration information appears to be unchanged, but pages are not printed double- sided, when requested. The duplexer works properly in local mode. My configuration is: Ubuntu 14.04 (up-to-date), HP Pavilion dv6 with AMD quad-core processor. I have been running Ubuntu on this machine for about 27 months. I successfully upgraded from 12.04 to 14.04 last summer. The 8600 printer has been in use for about two years. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1390994/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
