Today I joined my 6-month training at TCC (Testing and Consultancy Cell), GNDEC, Ludhiana. Today I noticed one of my friend’s laptop was running too slow and he was irritated because of this. He was using Ubuntu with unity as desktop environment. So I asked him the configurations of his laptop and it was 1 GB RAM. And it seemed to me the root cause of the problem.
I searched about light weight desktop environments and found this post:
So I advised him to install xfce.
For this, there is a command:
After installing, when he restarted then xubuntu spash screen appeared but again unity was started. So the next command is to remove unity and some related packages as given in above link.
Other options are: LXDE, MATE.