Dell Laptop E6430 DVD Doesn't Work in Ubuntu 20.04 (Files and VLC) But Will Boot From BIOS
For DVD-Video playback in any internal or external drive you need the following:
sudo add-apt-repository multiverse #only needed if the multiverse repository isn't enabled
sudo apt install libdvd-pkg
Use TAB then cursor keys to navigate and answer "OK" in the following screens. Then:
sudo dpkg-reconfigure libdvd-pkg
and again use TAB and cursor keys to navigate and answer "Yes" to the following screens. Source: https://help.ubuntu.com/community/RestrictedFormats/PlayingDVDs
In Ubuntu 20.04 you may find an error about a missing libdvdread7
library. Install it:
sudo apt install libdvdread7
Lastly, you may want to install VLC. And for good measure install adiitonal codecs and fonts (important for other media players; VLC uses its own set of codecs):
sudo apt install ubuntu-restricted-extras
(NOTE: Use xubuntu-restricted-extras
for Xubuntu and lubuntu-restricted-extras
for Lubuntu.)