How can I improve the power consumption of the open source AMD graphics drivers?

Question

How i can optimize the power consumption of the open source radeon driver? I don't want to use official amd driver cause of an error with sleep mode.

AMD E-450 cpu\gpu.

Answer 1

Open a terminal, and copy the following

echo dynpm|sudo tee /sys/class/drm/card0/device/power_method

If you do not like it, you can return back by using

echo profile|sudo tee /sys/class/drm/card0/device/power_method

If you want to set at boot, type

sudo gedit /etc/rc.local

and add before "exit 0"

echo dynpm > /sys/class/drm/card0/device/power_method

This may reduce the performance