Screen resolution only displaying 800x600 in Xubuntu

Question

I am running Sun VirtualBox on a Windows 7 64-bit machine.

I have installed Xubuntu 10.4 as a virtual machine but cannot seem to find an easy way of altering the screen resolution. Any ideas?

Answer 1

The issue is with VirtualBox.

You simply need to go to Devices » Install Guest Additions when you have Xubunutu running. This updates the OS.

Answer 2

Try to play with cvt and xrandr, short howto here: http://www.ubuntugeek.com/how-change-display-resolution-settings-using-xrandr.html

Answer 3

Try to edit /etc/X11/xorg.conf

in the following section, add the three lines with similar values for your convenience:

"Monitor"
    HorizSync       30.0 - 70.0

    VertRefresh     50.0 - 160.0

    Option         "PreferredMode" "1280x1024"

Be carefull with this values because they can destroy your monitor - have a look at the technical details for horizontal/vertical refresh rates.

Or connect your monitor with dvi-plug instead of vga.