Brightness Issue

I cannot change the brightness on my system, whether that be, via the brightness menu in system settings, or using the FN keys.

The animation shows, but the brightness does not change.
I had the same issue on Ubuntu, which was solved by following this: http://askubuntu.com/questions/22881...een-brightness

However, I do not know how to do this in Fedora, as I've only just made the switch.

Any ideas?