extended screen real estate under xorg (xinerama?)

Kevin E Martin kem at freedesktop.org
Thu Nov 30 06:25:56 PST 2006

On Thu, Nov 30, 2006 at 12:38:31AM -0600, Kevin Martin wrote:
> Running FC5 with Xorg on an Acer laptop and was wondering if there is a way to make the screen real estate seem larger (basically be
> able to have a virtual screen that is much larger than my physical screen, effectively making my 14" screen display as a 30"
> display)?  I've read some about Xinerama but that seems to be for using multiple screens, not making my tiny screen "virtually"
> huge.  The Video card is an ATI X1300 Mobility and I'm running ATI's Linux driver.

Hi Kevin,

If you are talking about the ability to pan around the screen, then yes,
there is a "virtual" option that you can add to your Display subsection
that will allow you to specify a virtual resolution that is larger than
your video mode.  For example, to set your video mode to 1024x768 and
your virtual screen size to 1600x1200, you could do the following:

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1024x768"
                Virtual  1600 1200

Then, when you restart the X server, your monitor will show a 1024x768
subset of the larger 1600x1200 virtual screen.  You can use the mouse to
pan that subset across the entire virtual screen.


PS - Just thought I should answer this one since we share the same first
and last names :-)

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