I likewise encountered this problem after upgrading from Ubuntu 16.04 to 18.04. Duplex printing works fine from other applications. I currently have Firefox 62.0.3 installed.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1736680 Title: fixefox duplex printing fails Status in firefox package in Ubuntu: Confirmed Bug description: Duplex printing in Firefox does not work. Printer is set to duplex, printer settings are set to duplex by default. LibreOffice and Chromium print pages duplex by default. Firefox does not even though duplex printing is set in the default settings and in the document printer settings. It simply ignores it. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: firefox 57.0.1+build2-0ubuntu0.17.10.1 ProcVersionSignature: Ubuntu 4.13.0-18.21-generic 4.13.13 Uname: Linux 4.13.0-18-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.20.7-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: wolf 1420 F.... pulseaudio /dev/snd/controlC0: wolf 1420 F.... pulseaudio BuildID: 20171129230227 Channel: Unavailable CurrentDesktop: ubuntu:GNOME Date: Wed Dec 6 09:49:10 2017 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) InstallationDate: Installed on 2017-10-20 (46 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) IpRoute: default via 10.1.0.254 dev wlp3s0 proto static metric 600 10.0.0.0/8 dev wlp3s0 proto kernel scope link src 10.1.0.155 metric 600 169.254.0.0/16 dev wlp3s0 scope link metric 1000 Locales: extensions.sqlite corrupt or missing PrefSources: prefs.js Profiles: Profile0 (Default) - LastVersion=57.0.1/20171129230227 (In use) RunningIncompatibleAddons: False SourcePackage: firefox Themes: extensions.sqlite corrupt or missing UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/08/2017 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP121.88Z.0171.B00.1708080033 dmi.board.name: Mac-E43C1C25D4880AD6 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro12,1 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-E43C1C25D4880AD6 dmi.modalias: dmi:bvnAppleInc.:bvrMBP121.88Z.0171.B00.1708080033:bd08/08/2017:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6: dmi.product.family: MacBook Pro dmi.product.name: MacBookPro12,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1736680/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
