Comment 2 for bug 1569590

Additional information:

I ran dpkg from the recovery menu. I'm uncertain whether that's caused the following behaviour or not.

On logging in, network manager shows "[wireless card name] disconnected"

On turning off wireless with the function key, network manager shows "[wireless card name] device not managed"

On turning on the wireless using the function key, network manager shows "Enable wifi" box unchecked.

Checking the box allows the machine to connect to the router.

If I turn the machine off, or reboot, I have to go through the last three steps again.