I can't seem to be able to change voltages on my Sapphire r290xs/r290s via config file in order for SGminer to automatically change clocks/voltages when switching kernel. I'm using the following switch: "gpu-vddc" : "1.25" and would like to add that I can change voltages in Afterburner just fine.
Thanks in advance for any input!
This is a problem with the AMD drivers. Voltage changing does not work on any gpu. It has probably worked at some point, perhaps in the 12.x catalyst.. But does not work in any 13.x or 14.x driver.
Afterburner talks with the hardware directly, bypassing the AMD drivers. This is not very clean, but seems to work fine.