I can play DVD's in my Ubuntu 14.04 LTS Trusty Tahr, but only once. If I want to play another DVD, I have to restart my system. OK, I've figured this part out. I have to click on File>Eject in Totem, then I can play another DVD. However, I have 2 DVD's when inserted, simply bring up a folder with only 1 file in it named "VIDEO_TS", & won't play. I've installed libdvdread4, libdvdnav4, libdvdcss2, and have executed sudo /usr/share/doc/libdvdread4/install-css.sh. When I run sudo regionset in terminal, I get this:
regionset version 0.1 -- reads/sets region code on DVD drives ERROR: Could not open disc "(null)"! Please ensure there is a readable CD or DVD in the drive.
Is there another package that I need to install? I want to be able to play ALL DVD's.