Virtual Jaunty Jackalope in Widescreen, Technicolour

The latest-as-of-writing release of Ubuntu, Jaunty Jackalope, installs quite straightforwardly under Microsoft Virtual PC 2007 (SP1) but the desktop defaults to a screen resolution of 800×600, with no obvious way of switching up to something more.. useful. Additionally, existing guides to making higher resolution modes available refer to previous versions of Ubuntu and seemed not to work.

Happily, however, someone has taken the time to work out, and share, the settings necessary to properly configure the display adapter and monitor emulated by Virtual PC. Integrating these with the xorg.conf generated by Ubuntu’s installer, we end up with something along the lines of the following:

Section "Device"
    Identifier    "Configured Video Device"
    Driver "s3"
    BusID "0:8:0"
    BoardName "86c764/765"
EndSection

Section "Monitor"
    Option "CalcAlgorithm" "CheckDesktopGeometry"
    Identifier    "Configured Monitor"
    HorizSync 30-95
    VertRefresh 50-75
    UseModes "Modes[0]"
EndSection

Section "Modes"
    Identifier "Modes[0]"
    Modeline "1280x800" 60.50 1280 1296 1360 1472 800 802 804 822
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Monitor        "Configured Monitor"
    Device        "Configured Video Device"
    DefaultDepth 16
    SubSection "Display"
        Depth 16
        Modes "1280x800" "1280x1024" "1024x768" "800x600"
    EndSubSection
EndSection

(xorg.conf can be opened for editing via a Terminal window – ‘Applications‘ > ‘Accessories‘ > ‘Terminal‘ – as follows:
sudo pico /etc/X11/xorg.conf [Enter/Return])

After saving the changes to xorg.conf and rebooting the virtual PC, the higher resolution modes are available via the ‘System‘ > ‘Preferences‘ > ‘Display‘ menu option.

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