thanks for replying. but i do not have windows installed 🙁

i can give you some specifics. the cable which connects to the laptop come from a common modem/router sitting at the top of builing. You telecom does not have their own software to configure the connection. They asked me to configure pppoe and i did that. However, even after that it is not able to connect.

i know this clue is insufficient for you to help me. So i will get somebody’s windows laptop over the weekend and try the same on ubuntu.

Again thanks.