Saint's Log

Changing Screen Resolution of Ubuntu in Virtual Box

As suggested on one of the Ubuntu forums, the key here is to install the VirtualBox guest  additions. Having done so on my system, I ran these commands:

cd /media/VBOXADDITIONS_3.2.6_63112/
sudo ./VBoxLinuxAdditions-x86.run

Rebooting my virtual machine and maximizing the VirtualBox window left me running Ubuntu at my native screen resolution of 1680×1050 :).

Update: On VirtualBox 4.1.2, use the virtual machine’s Devices -> Install Guest Additions … menu item. The ISO Disc should be automatically mounted, and allowing autorun to continue should complete the installation. The Virtualbox website has more information on guest additions.