Hello Linux Geeksters. As you may know, many sites protect their multumedia content by using the DRM technology over Adobe Flash and Microsoft Silverlight. In order to enables the playback of Flash content protected by DRM, we have to install HAL, which has been replaced on Ubuntu (starting with Ubuntu 13.10) with udev. For more information about HAL, see this article.
In this article I will show you how to install Hardware Abstraction Layer (HAL) on Ubuntu 14.04 Trusty Tahr, Ubuntu 13.10 Saucy Salamander, Linux Mint 17 Qiana, Linux Mint 16 Petra, Pinguy OS 14.04, LXLE 14.04, Peppermint Five, Linux Lite 2.0, Deepin 2014, Elementary OS 0.3 Freya and other Ubuntu derivatives.
Because it is available via PPA, installing Hal is easy. All you have to do is add the ppa to your system, update the local repository index and install the hal package. Like this:
$ sudo add-apt-repository ppa:mjblenner/ppa-hal
$ sudo apt-get update
$ sudo apt-get install hal