Pode ser necessário instalar o aplicativo libdvdcss
para que seu sistema possa ler DVDs.
Do arquivo /usr/share/doc/libdvdread4/README.css
:
Many DVDs use CSS[0] as a form of a Digital Rights Management (DRM) to encrypt
the content of Video DVDs. To play such discs a special library is needed to
decode them, libdvdcss.
Due to the legal limbo of libdvdcss in some particular juristictions, some
distributions including Debian do not distribute libdvdcss.
If it is legal for you to use CSS in your juristiction, you can:
* Manually download and compile the source code from
<http://www.videolan.org/developers/libdvdcss.html>.
* Use packages from derivatives that include libdvdcss.
[0] <http://en.wikipedia.org/wiki/Content_Scramble_System>
No site do link , há instruções de como configurar um repositório para instalar libdvdcss
.
Do site acima:
% bl0ck_qu0te% deb http://download.videolan.org/pub/debian/stable/ /
deb-src http://download.videolan.org/pub/debian/stable/ /
% bl0ck_qu0te%
wget -O - http://download.videolan.org/pub/debian/videolan-apt.asc | sudo apt-key add -
Em seguida, as instruções terminam e você conclui a instalação com as seguintes linhas:
sudo apt update
sudo apt install libdvdcss2
Espero que isso ajude!