So I uninstalled the virrualbox guest additions via
sudo purge virtualbox-guest-*
and rebooted.
Now it will no longer boot into KDE. If I reinstall virtualbox-guest-x11 it will again boot into KDE.
So I end up the the command prompt telling me to enter username/password.
How can I boot into the GUI without the guest additions?
Thanks
EDIT: HowToFix:
sudo apt-get install xserver-xorg-video-fbdev
reboot.