I have a ThinkPad with Ubuntu 13.04 (Raring Ringtail). I found that whenever I try to connect to Wi-Fi in Starbucks (where a login page is needed), it never succeeds. The same thing happens when I try to log into Wi-Fi in college where login is also needed. The login page does not appear as it used to on Windows.
What is the problem and what information should I provide?