Ubuntu – Full screen in virtualbox

Gues additions seem to been installed correctly.

Can you give your graphic card 32 Mb of memory. It's the only difference that I see with my setup that does work correctly in fullscreen or seamless.

How to check if video guest additions are installed

Looks like guest additions have not been correctly installed. Check that windows is using Virtualbox Graphics Adapter as it's display driver. If it isn't try to reinstall the guest additions and report back any problem that it displays.

You can check it using the Device Manager on windows. If you are using XP, you can reach it this way:

• To open Device Manager, click Start, and then click Control Panel. Click Performance and Maintenance, and then click System. On the Hardware tab, click Device Manager.

Other windows version have it placed in another places, but it's always there ;).

It sounds to me like you need to install "VirtualBox Guest Additions" on your Windows 7 guest.

Fire up you Windows 7 machine. Navigate to the top of the screen and click on "Devices". In that window, click on "Insert Guest Additions CD image". This will mount the VirtualBox Guest Additions CD as a drive for installation.

The program may open by itself, but if not, navigate on the, so called, disc to "VBoxWindowsAdditions" .exe file or your architecture (amd64 or x86) .exe file, and double click it. This will install all the drivers you need to run your Windows 7 guest. You now will be able to run your VirtualBox full screen.

Hope this helps.