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== Ubuntu Restricted repos ==How to Add the Universe, Multiverse and Restricted Repositories in UbuntuThe Ubuntu Restricted repository contains proprietary drivers. For example, you may find NVIDIA GPU drivers in here. This repository is officially supported by the Ubuntu team. The software in this repository is build somewhat 'downstream' from the hardware manufacturers/vendor. For example, NVIDIA may release a new driver set for it's GPU's, and the team at Ubuntu will integrate these drivers into it's restricted repository.There are three additional repositories which you can enable, or disable, namely Universe, Multiverse and Restricted. The Universe repository provides a collection of additional software which can be installed on your Ubuntu workstation. This repository provide community maintained open source software, and whilst there is no official support for the packages/applications within it, most of the software in the Ubuntu Software Centre comes from this repository.The Ubuntu Multiverse repository is contains software packages which may come with copyright or legal issues. The Ubuntu Restricted repository contains proprietary drivers. For example, you may find NVIDIA GPU drivers in here.