I have a VirtualBox VM running Windows 10 on a Linux host. It used to work just fine, but this day when I started it it hangs big time.
The VM’s window is just a black square, and also the host hangs up. I can’t even switch to another console with Ctrl+Alt+F6.
How can I start troubleshooting this? (I don't have any snapshots to go back to.)
Removed all Virtualbox packages:
apt auto-remove 'virtualbox*'
Reinstalled latest version (first add repositiory of needed (see virtualbox.org):
apt install virtualbox-5.2
It works again as of 2018-02-20 on