After installing libdvd-pkg and running: sudo dpkg-reconfigure libdvd-pkg
please ensure it has also worked: $ dpkg -l | grep dvdcss which should show something like: ii libdvdcss-dev:amd64 1.4.2-1~local amd64 library for accessing encrypted DVDs - development files ii libdvdcss2:amd64 1.4.2-1~local amd64 library for accessing encrypted DVDs -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to totem in Ubuntu. https://bugs.launchpad.net/bugs/1809044 Title: DVD playback error: unable to play . . . DVD source is required . . . To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/1809044/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs