Fix The VirtualBox “Spawning Session” Issue

After installing some Ubuntu updates yesterday, I found that I couldn’t start any virtual machines in VirtualBox2 anymore. I would get a “spawning session” dialog which would never close.

Open a terminal. If you haven’t already forced VirtualBox to quit, kill it:
killall VirtualBox

Run this command to automatically recompile and start the VirtualBox kernel module:
sudo /etc/init.d/vboxdrv setup

After a few seconds you should have some output like this:
* Stopping VirtualBox kernel module * done.
* Recompiling VirtualBox kernel module * done.
* Starting VirtualBox kernel module * done.

That’s it; restart VirtualBox and start your virtual machine. You may need to repeat this process the next time there is a major kernel update in Ubuntu.

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