rajakrishnan wrote:how to login remotely in pi using a Ubuntu laptop??
On Ubuntu, open the finder and type in "term". You'll see a program called Terminal with a black icon showing >_
Open this and enter the command below (replace 192.168.0.X with the IP address of the Pi).
You'll need to type y e s, the first time and press enter. Then enter the password for the pi user, typically raspberry and you should be in. This will give you command prompt access only though, if you need desktop access you'll need to set up a VNC server on the Pi. Google around for how to do this, there are plenty of articles online.