If a vagrant virtual box blocks system shutdown ...

2015-08-07 | #solution

I forgot to close my dev vagrant trusty box a hundred times already, everytime keeping my machine in endless waiting state when shutting down, forcing me to hard reset the damn thing.

To circumvent this, just edit /etc/default/virtualbox and add

SHUTDOWN_USERS="all"

# i use acpibutton here instead, which shuts the virtual box down normally

SHUTDOWN=savestate

to the end.