Hi ajgringo619, smurphos and kyphi,
Thanks for your feedbacks. I did not mention that of I already tried to install version number 6 just as you suggested and as described in the VirtualBox download page. Also, I added the relevant line in my source.list file as you soggested, but some error messages show me that something went wrong.
This is what I get when I run
virtualbox &
from terminal
WARNING: The vboxdrv kernel module is not loaded. Either there is no module
available for the current kernel (4.15.0-45-generic) or it failed to
load. Please recompile the kernel module and install it by
sudo /sbin/vboxconfig
You will not be able to start VMs until this problem is fixed.
while I get this after running
sudo /sbin/vboxconfig
[/quote]vboxdrv.sh: Stopping VirtualBox services.
vboxdrv.sh: Starting VirtualBox services.
vboxdrv.sh: Building VirtualBox kernel modules.
vboxdrv.sh: failed: modprobe vboxdrv failed. Please use 'dmesg' to find out why.
There were problems setting up VirtualBox. To re-start the set-up process, run
/sbin/vboxconfig
as root. [/quote]
I get a similar message on one of the two popup windows shown when trying to run the guest OS [Windows 7 64 bit] from the Virtual Box graphical user interface:
VirtualBox - Error in suplibSplitOsInit
Kernel driver not installed (rc=-1908)
The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing
'/sbin/vboxconfig'
as root.
where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.
while the other popup window shows this:
The virtual machine 'Win764bit' has terminated unexpectedly during startup with exit code 1 (0x1).
Codice di uscita:
NS_ERROR_FAILURE (0x80004005)
Componente:
MachineWrap
Interfaccia:
IMachine {5047460a-265d-4538-b23e-ddba5fb84976}
In order to avoid messing all the versions, I purged them all before reinstalling the 6 but it didn't work either. I also tried to install virtualbox-dkms from repos, which of course installed the virtualbox-dkms 5.2.18 version... which may not be compatible with the version number six of Virtualbox (?!?)