Your specific issue with the Fn+F2 sounds like an older issue that was seen back in the Karmic or Jaunty days cropping back up again, so I encourage you to make a bug report about it on launchpad.
How to solve it? Well the solution at that time was to install the latest version of eee-control that supported the hardware, perhaps this will help you now also? You can find eee-control here.
Let us know how you make out!