I'm trying lxde live cd on a Toshiba L555D-S7930 laptop. It has an ATI 4100 chipset (Radeon x1300). The LCD default is 1600 x 900 24 bit. I can't change that. The error is "no screens found". I can't get the Xserver to configure to use it, and I've tried several options. I can use fb and vesa, the later gives much better resolution. Is this a case of installing, then having to get the right driver?