I can confirm the problem, I installed kubuntu yesterday and it take about 30 seconds to get a usable desktop. I will try "empty session" solution and report.
-- 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