kernel
Check which kernet modules are loaded into memory
sudo /sbin/lsmod
Check which virtual box modules are loaded into memory
sudo /sbin/lsmod | grep vbox
Virtual box is using vboxpci, vboxnetadp, vboxnetflt, vboxdr.
Look at what’s claiming wifi:
sudo lshw -C network
If this shows that the device is ‘unclaimed’ then it’s time to add a module, e.g. ath9k.
sudo modprobe ath9k
Modules can also be ‘restarted’ by removing and adding them, e.g. the video module, ‘uvcvideo’:
sudo rmmod uvcvideo
sudo modprobe uvcvideo