How to enable DVD playback in Ubuntu
But one thing that you can't do with a stock Ubuntu installation is play commercial DVDs. While the Totem movie player will certainly make a valiant effort at playing the video on any DVD you stick in your computer, it won't manage to bring up DVD menus and may have problems playing the video. It turns out it's very easy to enable DVD playback. Just open a terminal and type the following two lines (entering your root password when prompted):
sudo apt-get install totem-xine libxine1-ffmpeg libdvdread3
Or if you'd rather not play around with the terminal, you can open the Synaptic Package Manager and do a search for VLC. The VideoLan media player is capable of playing DVDs without any tweaking.