Only problem with Linux gaming is that you don't get stuff like fan, voltage, frequency control for newer AMD hardware. This hasn't been an issue for me until I got a 6800XT. I thought about RMA until I remembered their Adrenaline software exists. I wish I could save my settings to the card's BIOS.
I no longer use this machine for anything but gaming. Going back to windows sucks
This application lets you adjust everything and the settings are saved on reboot