I want to have a smoother experience. With xubuntu-desktop I have just about 6 brightnessteps with my laptop. But in Gnome when the desktop darkens, it happens without steps like in mac. Is it possible to do that aways, so the screen goes continously lighter or darker?
Have you tried adjusting the LCD brightness using the LCD Brightness plugin in the xfce4-Panel. The LCD Brightness plugin is included in xfce-power-manager.
Or you can look into using xbacklight.