I tested the package: ii plasma-nm 4:5.4.2-0ubuntu1.1 amd64 Plasma5 networkmanager library. And it fixed the problem for me (#45)
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509334 Title: [sru] plasma-nm blocks temporarily on startup w/o bluetooth device – KDE/Plasma very slow to launch (Kubuntu 15.10) To manage notifications about this bug go to: https://bugs.launchpad.net/plasma-nm/+bug/1509334/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs