My guest OS is Ubuntu 12.04 under a VB.

How can I make it to support mouse pointer integration? It is very inconvenient to work with a captured pointer. I had a previous Ubuntu installed which crashed and I had to remove it, and over there the integration worked.

Thanks, - Alex

Install the guest additions.

They have been installed. And they worked in the previous Ubuntu which crashed. I now installed a new VM. Do I have to reinstall the guest additions again?

The guest additions are installed on the guest.

Since you set up a new guest, you need to install the guest additions on it.

I think the package you need is That's off the top of my head, though, so it might be slightly different

To install it, run in a terminal.

I'd assume above is correct. If not could be some issue with dkms.

I just did:

I got an error:

The package for guest additions is actually sitting in my computer under:

First result on Google for "ubuntu virtualbox guest additions"

http://askubuntu.com/questions/22743...-virtualbox-vm

See if that works.

Thank you, maples. I've been thinking along the same lines. I am sure it will work but will not be able to test it until Saturday. Thanks, - Alex

Debian based is:

Or you can click on Devices -> "Install Guest Additions", which will add a CD-type device to the guest OS and allow you to compile and install the guest additions. You'll need gcc and the kernel headers installed in order to do this.

Many thanks to everyone for your help. I just installed the Guest Additions and learned a lesson that the Guest Additions must be installed for every VM I create. This is how I did it.

In VirtualBox: Settings==>Storage==>Controller IDE (in the window to the right); highlighted the dependency which was empty; checked the Live CD/DVD checkbox==>clicked on round part bluish DVD sign, highlighted Choose a virtual CD/DVD disk drive==> Look for an .iso file: VBGuestAdditions.iso, click, click,==> went back to the Ubuntu VM. There is already a window waiting for you which announces that there is something to install, just click "RUN" button. The mouse capture disappears immediately and you can move your mouse back and force. Clipboard bidirectionality still does no work but hopefully will be after a reboot.

Thanks, - Alex

Well, I restarted the Virtual Box and VM. The bidirectional or even unilateral Clipboard still does not work. The only change is that the mouse cursor is not captured by default. I can move it freely from the Terminal to Windows 7 desktop and the other way without clicking on right CTRL. There is no capture. It is convenient but it is only half of the deal. Thanks, - Alex

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Clipboard bidirectional still does not work as well as bidirectional Drag and Drop even after a complete reboot of Windows 7 host OS.

Now everything is working. The same thing happened with my previous VM. After I installed Guess Additions it took it a week to turn around and implement all features. Many thanks to everyone.