Voilà le résultat de ce qu-ils avaient demandé:
XXX@XXX-E202SA:~$ sudo /sbin/rcvboxdrv setup
Stopping VirtualBox kernel modules ...done.
Uninstalling old VirtualBox DKMS kernel modules ...done.
Trying to register the VirtualBox kernel modules using DKMS ...done.
Starting VirtualBox kernel modules ...failed!
(modprobe vboxdrv failed. Please use 'dmesg' to find out why)