Before disconnecting from GoogleWiFi, you must obtain your 802.1x username and password (this is different from your Google Account login information). To obtain a username and password for the GoogleWiFiSecure service, please ensure that you are connected to GoogleWiFi and then visit: https://wifi.google.com/prefs
Please note that you will need to click the link 'Show' in the 802.1x Settings section, as displayed below:
After receiving a username and password for GoogleWiFiSecure, you are ready to create a new profile in your network connections manager. Please note that you will not see the SSID 'GoogleWiFiSecure' while viewing available networks. (why?)
To connect to GoogleWiFiSecure, create a new network connections profile with the following settings:
SSID: GoogleWiFiSecure (case-sensitive)
WPA/WPA2 Settings
EAP type: EAP-PEAP or EAP-TTLS
Encryption method: AES (preferred) or TKIP
Authentication Protocol: MS-CHAP-V2 or CHAP
Trusted Server Name for Authentication: onex.wifi.google.com
Under the 802.1x settings be sure to enter the username and password that you obtained earlier.