I ran into this today and the problem turned out to be /tmp: # ls -ld /tmp drwxrwxr-x 11 ubuntu ubuntu 4096 Aug 24 00:23 /tmp
This fixed it: # chown root:root /tmp # chmod 1777 /tmp I don't know how /tmp got in that state on my server (it's a fairly fresh install of 16.04) but perhaps that's the underlying problem for other people too. -- 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
