I'm trying to use a raw LCD with a beagle board (rev C). The polarity
of the hsync and vsync signals is wrong at least for my panel so I
don't get very far.
I tried using fbset -hsync low. No error is reported but the polarity
doesn't change either.
I'm using the Angstom distribution.

Any words of wisdom?

IIRC, fbset is not working yet. You have to set the mode at boottime.

Hard as I looked (in the documents and drivers/video/omap2 sources I
couldn't find
any command line parameter to control the sync polarity.

Before I brute force the source, is there a better solution?