I am trying to have full screen resolution of Ubuntu 14.04 guest OS in Virtual Box 4.3.12. My host Os is Windows 7.

I am following this steps:

Open up a terminal and run this command to open up additional drivers:

sudo /usr/bin/software-properties-gtk --open-tab=4

Click on Using x86 visualization solution If you wanted to Install this in terminal you would need to run this command.

sudo apt-get install virtualbox-guest-dkms

But I'm unable to get full screen resolution.

  • 1
    Have you installed the extension pack and guest additions? Jan 23, 2018 at 5:03
  • You should also upgrade your VirtualBox. Version 4.3.12 is pretty old and some bugfixes may be useful for you.
    – Melebius
    Jan 23, 2018 at 7:31

1 Answer 1


I guess you got lost some where. Boot the VM and from Devices Menu choose "Install Guest Additions". This will mount the ISO as a CD in the VM. Next Run this in terminal:

sudo sh /media/cdrom/VBoxLinuxAdditions.run

Then continue to follow on screen Instructions. Reboot the VM when done.

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