compiz-plugins-main software package provides transitional dummy package., 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 compiz-plugins-main
compiz-plugins-main is installed in your system.
Make ensure the compiz-plugins-main package were installed using the commands given below,
$ sudo dpkg-query -l | grep compiz-plugins-main *
You will get with compiz-plugins-main package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | compiz-plugins-main |
| Version | 1:0.9.11+14.04.20140409-0ubunt |
| Description | transitional dummy package. |
| Sub Section | x11 |