MEdiaGx adn DblSurface

Hi,

I?m confused about HWSURFACE and DBLBUFFER with my hardware. I plain to make
some graphics developments over a MediaGx platform with Linux + SDL and WITHOUT
Xwindows.
Under MSDOS, I can get two pages of video memory and I flip every frame, But
with Debian and kernel 2.4.23 I?m unable to get DLBBUFFER in any way.
I don?t have very clear if I need a driver under the SDL library. I think that
actually I use the ?vesafb? driver.

Can anybody tell me what is the better combination for this hardware without the
necessity of install Xwindows?

Thanks.