guest-additionskernelupgradevirtualbox
I have an Ubuntu box installed over VirtualBox with Windows 7 as host. I installed guest additions in it and was working perfectly as expected.
Suddenly, one day VirtualBox complained that guest additions are not installed (possibly after an upgrade). I had to reinstall guest additions all the way again.
Is this because of kernel upgrades from Ubuntu? A new kernel needs a reinstall of guest addition?
Virtualbox 3.2.12 has been out for a while, maybe that will fix your issue
To be able to scale the screen geometry, and to enable fullscreen mode of a Virtual Box guest Ubuntu we need to install the guest additions:
In case this fails we may try to reinstall guest additions, and watch out for errors we may get when doing so. Older versions of Virtual Box may be incompatible with either the graphics drivers from the host, or with the guest Ubuntu version. We then have the following options we may try the follwing:
Make sure we have 3D-acceleration enabled in the virtual machine settings, and allow enough of video memory:
How do I install the VirtualBox version from Oracle to install an Extension Pack?
Update the guest operation system from command line (hold left Shift key on booting to enter a root shell) and then run:
apt-get update && apt-get dist-upgrade
In rare cases we may have a better performance with an older Ubuntu release, or a more lightweight derivate such as Lubuntu, or Xubuntu.
After having installed the guest additions the guest OS needs a reboot for the virtual driver to be loaded. We then should be able to resize or scale the guest screen, or enter full screen mode with Host + F.
Also see Adjusting display geometry in a virtual machine? for additional options to adjust screen geometry.
Note: Pre-release alpha versions of Ubuntu are likely to not yet perform as expected.
Best Answer
No, generally it doesn't require.
dkmstakes care of the upgradation.Please have a look here - How do I keep guest additions working in virtual box after updates?
However, some users report even after dkms installation the problem remains.If it is happening with you, I would like to point to the below answer.
First uninstall using
sudo /opt/[VboxAddonsFolder]/uninstall.shThen follow https://askubuntu.com/a/99479/35775You can also read other answers in the question - How do I install Guest Additions in a VirtualBox VM?