lxde-common software package provides the Lightweight X11 Desktop Environment configuration data, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lxde-common
lxde-common is installed in your system.
Make ensure the lxde-common package were installed using the commands given below,
$ sudo dpkg-query -l | grep lxde-common *
You will get with lxde-common package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | lxde-common |
| Version | 0.5.0-4ubuntu4 |
| Description | the Lightweight X11 Desktop Environment configuration data |
| Sub Section | x11 |