Fedora 18 brightness scale lost after

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http://forums.fedoraforum.org – Hello, I am installing a fresh copy of Fedora 18 on my laptop. HP Envy dv7. The brightness control works great on the Live CD and after installing. However, when I upgrade to the latest kernel/packages. The scale of the brightness control is off. Previously I use the keyboard brightness control keys and I hit it 7 times to reach the maximum brightness. However, after the upgrade I hit it twice and it reaches the maximum. Any pointers? (HowTos)