Wlan and the Networking service on Ubuntu

Because I have a mix of GUI and CLI systems, I configure all my machines through the command line. For networking this means I edit the /etc/network/interfaces file. Most of the time, this works just fine, except that after upgrading to the newest Ubuntu release on my laptop, all of a sudden my wireless network wouldn’t come up at boot. In a previous version of this post, I wrongly suggested that removing network-manager would solve the issue. »