I have been searching through the Ask Ubuntu and Elementry OS Forums and there is nothing about getting this issue fixed. When I Hold Function and Press up and down the Brightness slider moves but there is nothing happening. Can someone please help me with this issue. I have added my Computer specs below.
Quad-Core Intel® Core™ i7-3520M CPU @ 2.90GHz 6.0 GB Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) NVIDIA Corporation GF108GLM [NVS 5200M] (rev a1)
Dell Latitude E6430