[ltp] switch between clone mode and second screen

[Alex Deucher]

On Wed, 09 Feb 2005 20:30:06 +0100, Ulrich Kuehn <ukuehn@acm.org> wrote:
> Hi,
> 
> I am just wondering if there is a way to switch the external DAC output
> between clone mode and a second, independent screen.
> 
> My reasoning is as follows: I have a 17" monitor with 1280x1024
> resolution which I would like to use in addition to the internal
> display. Using the ServerLayout section in XF86Config works fine here.
> 
> But for giving presentations on a typical beamer, the resolution is just
> too high, usual is 1024x768; furthermore I like to see what's beamed to
> the wall. So the clone mode is the method of choice here.
> 
> Is there a tool that allows to switch between both modes without
> restarting X? I am aware that only the internal display would probably
> be cloned, not the external.
> 
> Can someone give me hint with this issue?

If you are using a radeon, take a look at MergedFB.  It should do what you want.

Alex

> 
> Ulrich