afaik, when using kdm, dpi is guessed by X. my dpi was read on my both screens (the physical ones) and resulted in x-dpi and y-dpi (I mean the horiz and vertical dpi weren't the same).
maybe then if fallbacks to 75dpi if no information is found on the hardware ... Personnaly I *manually* force the dpi in kdmrc, and I run startx with -- -dpi 75 I don't know how startx work anyway. -- ·O· Pierre Habouzit ··O OOO http://www.madism.org
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