Comment 34 for bug 574250

Hi all, just to add my two penn'orth: on my n150...
installing the packages from voira does indeed make most of the function keys work
the backlight brightness keys prompt the appearance of the notifier which indicates (to my mind) they are mapped to the correct functions
_however_ backlight brightness is left unchanged when using the function keys, and changing brightness in the power applet does not affect brightness either.

Perhaps they are all mapped to the wrong device, as
sudo setpci -s 00:02.0 F4.B=10
(or whatever value) does affect the brightness as expected.