Interesting work you're doing.

Have you tried to set margin to a value between 0 and border, for example to 10-20 pixels just to get rid of the overscan effect on the tv? Will not solve the scaling problem but maybe I can live with that if I get real fullscreen without overscan.

Really annoying with the overscan on the tv, I'm thinking of buying a component cable -> vga to my tv as the vga input on the tv has full pixel support but I still want to play the games over HDMI. Does anyone have knowledge if the ps3 outputs video on hdmi and component at the same time or do I have to disconnect HDMI when I want to run linux and vice versa?

/anton