On the rare occasion that an Ubuntu user is having trouble connecting to smu-wifi:
Step 1 : Click on the connection icon on the notification area and select "Edit connections"
Step 2: If there's a smu-wifi profile, go ahead and delete it. Click the connectivity icon again and then try connecting to smu-wifi
Step 3: Select LEAP as the method of authentication and WPA & WPA2 as the security. NOTE: For other versions of linux, you might have to set the authentication method as PEAP and check no CA certificate is required
Step 4: If there's a domain field. put smu-idp.smu.ca
Step 4: Have the user enter their email and password and that should be all