I can’t start virtual machines in virtualbox. It gives me an error message (attached) and I don’t understand why … What do you advise me to do. By the way, I’m back with the audio problem solved. Thanks anyway to everyone for the suggestions.
This is the second screen that appears …
Seems like a dependency issue, which is also what is stated here: https://askubuntu.com/questions/122211/getting-error-message-when-trying-to-start-a-virtual-machine
Did you install using Synaptic? If not, I suggest uninstalling and reinstalling, both steps using Synaptic.
Resolved carmar, Virtualbox now works correctly …! Uninstalled and reinstalled with synaptic. Asked to reboot with a password for additional drivers (MOK?) … Thanks it’s a great community!