Michel,

Unfortunately, you are correct.  I had tried disabling both of these 
options without success wrt my problem.  I do not want my resolutions to 
scale to full screen.  The reason for this is simple - Most overhead 
projectors will not sync to the highest native resolution of my laptop - 
1400x1050.  However since all the lower resolutions scale to this higher 
resolution (and the scaling produces a low quality image), I am unable to 
sync to a projector at any resolution!  This is a fatal flaw for me.  I 
will have to boot to winxp to use a projector connected to my external 
laptop video output.

-- 
Steve Castillo

On 27 Aug 2002, Michel D�nzer wrote:

> On Tue, 2002-08-27 at 16:19, Steven Castillo wrote: 
> > 
> > Is it possible to turn off the "Indirect CPU to Screen color expansion"
> > XAA feature for the ATI Radeon Mobility M7 chip on a laptop?
> 
> Sure, with Option "XaaNoCPUToScreenColorExpandFill" or
> "XaaNoScanlineCPUToScreenColorExpandFill" (from man XF86Config-4).
> 
> > When running in a resolution lower than the laptop native resolution, I
> > do not want the display to be scaled to the entire screen, which is what
> > this XAA feature apparently does.
> 
> It doesn't, as you'll find out when trying these options. :) That
> feature is mainly used to accelerate the drawing of monochrome text.
> 
> As for the mode scaling, I'm not aware of a way to turn that off; what's
> the behaviour you'd like to achieve?
> 
> 
> 

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