Bug Description

[Impact]

Plasma NM does synchronous DBus calls do bluez for the bluetooth status, which in some situations can take up to 30s to finish/reach a timeout.

As Plasma itself waits for Plasma NM to initialize, this can cause the Plasma login to take half a minute without any response.

[Test Case]

First of all, you need a system that is affected by this.

- Try to log in an see that it takes unusually long to do so (~30s)

- Enable wily-proposed and update plasma-nm

- Reboot and verify that the login now takes 5-10s

[Regression potential]

This is mostly just reworking existing BT activation code, so the worst that should happen is the adapter getting enabled a while after the Desktop finished loading. As that's a normal use case when you enable an adapter by hand later on this shouldn't cause any issues.

[Original Description]

On my four PCs upgraded from Kubuntu 15.04 to 15.10, I have the same problem: for two days, KDE/Plasma is very long to launch. The desktop begins to appear but I must wait nearly one minute for all plasma widgets and icons to appear. And I repeat, this is happening on 4 different machines !

Once everything is finally launched, the system seems OK.

Update: removing the network manager app from the taskbar solves the problem.