My issue turned out to be related to my infrastructure provider (DigitalOcean) not updating the kernel correctly.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583102 Title: Could not execute 'apt-key' to verify signature (is gnupg installed?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1583102/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
