Hi, > One thing you can check, are you running "DynamicClocks"? do you consider it possible, that I have to recompile radeon_drv.o and ati_drv.o for some reason? Altough DynamicClocks seems to be working (according to the X11 log)? Is there a possibility to check, whether it's really doing its job? Maybe one can read out the GPU's frequency? Or the GPU temperature? Cheers, - Moritz