I fixed this by using the Kubuntu backports PPA (5.6.4) - 5.5.5 still affected by this bug at present
-- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to networkmanager-qt in Ubuntu. https://bugs.launchpad.net/bugs/1569674 Title: [Kubuntu] Fail to connect to wifi after a recent update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/networkmanager-qt/+bug/1569674/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs