![]() The kernel drivers are installed on the guest in source code form - readable text which is the ingredients of computer software. The VirtualBox team can usually not give much help with pre-installed Guest Additions (though the distribution should be able to), so our instructions for installation below include steps to remove distribution Guest Additions when these are known. Some distributions actually come with Guest Additions installed, though generally not the most recent version. All of these use normal Linux drivers in the guest kernel which drive the emulated guest hardware. The Guest Additions are notably not involved in keyboard input, USB and networking. It does not depend on other drivers, programs the emulated hardware directly and is not expected to be running on systems with X.Org servers older than and including 1.16, as they are not compatible with it and use special drivers, or on systems with Linux kernels older than version 3.11. ![]() The vboxvideo graphics driver drives the guest video hardware emulation.It communicates with the host shared folder service through the vboxguest driver. The shared folder driver vboxsf provides shared folder functionality to the guest.This works by pretending that the guest system has a touch screen which is "touched" in the right location whenever the host pointer moves over the guest window. It also includes an input driver which lets the host and the guest share a pointer. shared folders, shared clipboard, drag and drop) and matching services on the host, as well as providing a few ad-hoc services itself. The main driver, vboxguest, provides a generic communication channel ("HGCM", host-guest communication mechanism) between various services which can run on the guest (e.g.When there are problems with the Guest Additions, the first thing to check is whether the drivers are correctly installed. The core part, so to speak, of the Linux Guest Additions are the guest kernel drivers. Investigating generic problems with the Linux Guest Additionsįeedback about this page and suggestions for improvements welcome on the vbox-dev mailing list!
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