I have installed Ubuntu Mate 15.04.

When I insert an audio CD or a non-commercial DVD into the drive a window will appear asking me what I want to do. I know how to change the settings to cause the disk to automatically play with a particular program (e.g. VLC).

However, when I insert a encrypted DVD into the drive this window does not appear.

I am, however, able to open VLC and play the encrypted DVD without any problems so I am sure that all the software needed to actually play the DVD is installed.

There is a message in /var/log/syslog stating "Read of scrambled sector without authentication".

Autoplay of encrypted DVDs does work with another distribution using the same hardware.

I have looked at udev and polkit rules, but I have not yet discovered the solution.

interesting.

is the library required for reading encrypted dvds installed? i think it was something like libdvdrss?

Yes, libdvdcss is installed.

Thanks

auto play should be disabled ( same as on win7,8,8.1 )

sounds NORMAL

as above
this should NOT be set .Autoplay should be disabled by default on EVERY operating system in the last 10 years



data dvd's work rather differently than music Cd's and video dvd's


music and video require the use of a program to read them

this program needs to be running first


for VLC ( or smplayer or xine)

pop in the store bought dvd
then start vlc
use the menu to select the dvd drive
and play

Out of curiousity I installed Ubuntu Mate 14.04 along side Ubuntu Mate 15.04 on the same computer referred to in my original post.

Under 14.04 encrypted DVDs are recognized upon insertion, but not under 15.04.

It seems that distributions using upstart might recognize these DVDs upon insertion more often than distributions using systemd, but I am not certain of that.