All PPAs I have, on the site launchpad says are compatible with Ubuntu 16.04
W: gpgv:/var/lib/apt/lists/dl.google.com_linux_chrome_deb_dists_stable_Release.gpg: The repository is insufficiently signed by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_libreoffice_libreoffice-5-1_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 36E81C9267FD1383FCC4490983FBA1751378B444 (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_maarten- baert_simplescreenrecorder_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 4DEDB3E05F043CA185176AC0409C8B51283EC8CD (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_otto- kesselgulasch_gimp_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key FB97E9C3A97F85C095AEA7903BDAAC08614C4B38 (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_sunab_kdenlive- release_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 6976C1CEB06586061C2C0472B5115B98AA836CA8 (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_webupd8team_atom_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 7B2C3B0889BF5709A105D03AC2518248EEA14886 (weak digest) W: gpgv:/var/lib/apt/lists/ppa.launchpad.net_webupd8team_java_ubuntu_dists_xenial_InRelease: The repository is insufficiently signed by key 7B2C3B0889BF5709A105D03AC2518248EEA14886 (weak digest) Only Megasync I downloaded the deb W: gpgv:/var/lib/apt/lists/mega.nz_linux_MEGAsync_xUbuntu%5f15.04_._Release.gpg: The repository is insufficiently signed by key BF8B66E01192CBA2E72201294B4E7A9523ACD201 (weak digest) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1558331 Title: message "The repository is insufficiently signed by key (weak digest)" is poorly worded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1558331/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
