First step: is your driver installed?
sudo apt-get install network-manager
Third step: download the certificate of STU Bratislava CA
I downloaded the pem certificate on this site:http://www.stuba.sk/stu_ca.cer.
Fourth step: connect to site dialog.
Remember the dialoge that appears by selecting the eduroam site in the networkmanager? Please fill it by the picture attached.
wireless security: wpa enterprise,
eap method: peap,
key type: tkip,
identity: Tato adresa je chránená proti spamovaniu, pre jej zobrazenie potrebujete mať Java scripty povolené ,
anonymous identity: don't fill,
client certificate: none,
ca certificate: stu_ca.cer,
private key file: none,
private key password: don't fill
Fifth step: you should be logged into the site
and recieve the ip adress by the dhcp server. It's simple