working linux distro with amd drivers



sorry if this thread is in the wrong section, i`m new in the forum, also using linux, i will be short.

i could not get amd ati drivers working, at all, always blackscreen, or corrupt gui, (fedora 20, ubuntu 13.10 ubuntu 12.04) , i need to get linux fully working with opengl, (i'm designer/programmer) in order to use Autodesk Maya, game engines and etc.
if someone could guide through from start, formatting, updating and installing the drivers would be nice.
thanks already!

(please with gnome if possible :D)

xfx ati hd 6750 1GB

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