I have not had that issue at all. I have rx 580's with the hardware bios switches on the physical gpu and im running the btc gold motherboard so that offers me the ability to OC everything from the bios on the motherboard. I knew that the GUI software for OC functions weren't going to work on Linux. (they work well on windows though)I even tried to use wine to open the overclock GUI software that comes with the AMD GPU's but that didnt work. Hence the motherboard Overclock feature. I actually threw my first one out because of this issue... I am going to have to switch over to mining on windows though... Im prepping for the swap using my test rig now... Bye Bye linux! you were there for me back in the day but.... hahahaa