Linux and DVD Regions

Typically, Linux DVD playback software are capable of decrypting (libdvdcss must be installed) and playing back DVDs from any region, irrespective of the region code of the drive. Therefore, there should be no need to change the region code of the drive to watch discs from a different region. Regardless, there exists a very handy program that allows the user to change the region code and view other relevant information such as the number of changes remaining. It is called "regionset" and is available for Fedora from the Extras repository. The project website is:

http://linvdr.org/projects/regionset/

There is also a useful article on Linux.com about DVD playback:

DVD Playback HOWTO