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Hello,

On Sep 19, 2007, at 16:45, Marco Trillo wrote:

> However, I noticed a problem with the virtual resolution/physical
> resolution distinction.
> The EDID resolution chooser will try to select the best physical
> resolution based
> on parameters such as "preferred mode" or "best refresh-rate". But
> the virtual resolution chooser will always build a list of all
> resolutions and pick the largest one.
>
> For example, these are the EDID video modes for my monitor:
>         1024x768 @ 89Hz
>         1280x960 @ 72Hz
> From the list, the physical resolution picker will select the
> "Preferred mode: 1024x768 @ 89Hz". However, the virtual resolution
> chooser will select the largest one, 1280x960 @ 72Hz.

Ouch. I guess I never ran into this because my iBook's EDID reports  
only a single mode.

> This means that not all the virtual screen will be visible in the
> physical screen.

This may or may not have been intentional - after all, radeonfb  
wasn't originally written with macppc in mind and I don't know if the  
device it was written for actually uses the virtual resolution. Looks  
like a bug to me though.

have fun
Michael




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