I have a Toshiba NB 305 with this integrated video controller, and I just can't get my resolution to its native 1024x600 in Backtrack 4 Final. It's automatically set in Ubuntu, but it just won't work in BT.

800x600 is the highest resolution available, but I know the GPU and monitor definitely supports 1024x600.

I've tried creating a new mode in xrandr, but it just says "failed to change the screen configuration" every time. Is there some sort of custom driver I could try?