I've just installed Ubuntu 10.04 into VirtualBox on Windows 7.
Unfortunately the only options showing for screen resolution are 640×480 and 800×600 and the monitor is showing as 'Unknown'.
How would I go about upping the resolution to 1280×1024 (I'm on a 1600×1200 monitor)?
I tried mounting the VirtualBox 'Guest Additions' ISO (from the VBox 'Devices' menu) and doing
sudo sh ./VBoxLinuxAdditions-x86.run
from the mounted drive, which gave 2 new listed resolutions after a reboot (1024×768 and the 16:9 version of that resolution). These worked when I selected them but disappeared when I switched back to another resolution. I tried rebooting and running
VBoxLinuxAdditions-x86.run again but onlu the 2 low res options listed this time.
I think I'm going to reinstall…
Seems to be a VBox problem rather than an Ubuntu problem as after reinstalling 10.4 overwriting the original virtual partition,
sudo sh ./VBoxLinuxAdditions-x86.run now has no affect at all.