After installing Ubuntu on VirtualBox… (Guest Additions in Virtual Box)
Virtual Box for some reason doesn’t seem to show Ubuntu in full screen mode and the display is distorted. You will have to install virtualbox-guest-additions in order to fix this issue.
First, make sure you have the DKMS (Dynamic Kernel Module Support) package.
In a terminal window type:
sudo apt-get install dkms
Then, install the virtualbox-guest-additions by typing the following apt command in the terminal window:
sudo apt-get install virtualbox-guest-additions-iso (to search it first to see if it is available #apt-cache search virtualbox-guest-additions-iso)