For your reference, this is the contents of my /etc/apt/sources.list file. Also, /etc/apt/sources.list.d directory is empty.
** Attachment added: "/etc/apt/sources.list" https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/769364/+attachment/2086094/+files/sources.list -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/769364 Title: Software-sources showing repeated options -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs