lshe> Has anybody a 'ready for this use' XF86Config-4? i don't know if this helps you a lot, but i'm using a ibook 800Mhz (with the m7, too). my two (!) config-files are appended... the .single works fine for me for just the internal screen, the external is absolutely unusable, while the .dual messes the internal one a little bit (though not to gravely).
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XF86Config-4.single
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XF86Config-4.dual
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