I've got a fresh installation of Ubuntu 18.04.1 server running on an HP ProLiant DL380 Generation 7 (G7). I am trying to install VirtualBox 5.2.
I used the tutorial on this website : https://linuxize.com/post/how-to-install-virtualbox-on-ubuntu-18-04/
When I run the command
sudo apt-get install virtualbox-5.2 I got.
The following packages have unmet dependencies: **virtualbox-5.2 : Depends: libqt5x11extras5 (>= 5.6.0) but it is not installable** Recommends: libsdl-ttf2.0-0 but it is not installable Recommends: gcc but it is not going to be installed Recommends: make but it is not going to be installed or build-essential but it is not going to be installed or dpkg-dev but it is not going to be installed Recommends: binutils but it is not going to be installed Recommends: pdf-viewer E: Unable to correct problems, you have held broken packages.
I installed virtualbox on monday with the exact same method and it worked then. I have no idea how to fix this. Why does this problem all of a sudden appear?
Update: I just found a very similar question. Install Oracle VirtualBox 5.1 in Ubuntu 16.04