After I set up my wireless network, I had to restart my computer before it would connect. I have talked to/read comments by, several other Ubuntu users who had to do the same thing. Why does this happen, and is there a way to connect a wireless network without a restart? Are we all just noobs and missing something obvious? I already understand the driver install process, but I just don't see why A restart seems to be necessary so often.
There are several methods you can use.
To bring down all network interfaces:
To bring all network interfaces up again:
To restart networkmanager:
This also works for wired connections: