If you feel your computer run slower on Ubuntu 14.04 desktop with Unity, you may want to try switch to LXQT desktop environment. LXQT is a lightweight desktop environment with combines LXDE and Razor-Qt. This tutorial is going to show you how to install LXQT desktop on Ubuntu 14.04 Trusty Tahr.
Use this commands with the following sequences on Terminal:
sudo add-apt-repository ppa:lubuntu-dev/lubuntu-daily
sudo add-apt-repository ppa:gilir/q-project
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install lxqt-metapackage
When done, you simply log out and re login.
Thank you for reading this How To Install LXQT On Ubuntu 14.04 Trusty Tahr
Source: linuxg.net