This package contains the VirtualBox Guest utilities, the xorg video driver and the service daemon. The service daemon is automatic started and stopped in runlevel 4. ========== You might want to add "/usr/bin/VBoxClient" to your xinitrc file if you use a desktop environment that doesn't respect /etc/xdg/autostart or /usr/share/autostart To use the vboxvideo xorg driver, you have to create an xorg.conf and specifiy to use that driver in there. Xorg will NOT pick that driver by default.