Using 2.6.38-11-generic #48+kamal~mjgbacklight5-Ubuntu, on a Studio 1558, the backlight keys work (I see the notification), but the backlight levels are no longer changing.
Using 2.6.38-11-generic #48+kamal~ mjgbacklight5- Ubuntu, on a Studio 1558, the backlight keys work (I see the notification), but the backlight levels are no longer changing.