I moved from Windows 8 to Ubuntu 14.04 last week. I could able to connect to my Internet from my home. But, when I tried to connect to college network, I'm repeatedly asked for either Certificate and Password.
I've tried all the solutions mentioned in the thread https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1104476 .
Issues: First of all, I don't have an entry "system-ca-certs=true"
in my connection file /etc/NetworkManager/system-connections/<my college network>
to remove. Even I tried adding and removing the same with false. And restarted my network-manager and system, But, it didn't help me. I've trying to resolve this from the last two weeks.