AMD Radeon HD 7670M, power_profile: Invalid argument

Submitted by Feldwor @BoQsc

Assigned to Default DRI bug account

Link to original bug (#110751)

Description

I tried to change power profile of a GPU to a lower one, so that laptop won't overheat so quickly.

I found this method on the internet and various documentations:

echo low | sudo tee /sys/class/drm/card0/device/power_profile
tee: /sys/class/drm/card0/device/power_profile: Invalid argument

However this method never worked - Invalid argument show up no matter what value I try to give the power_profile


Even giving the already existing "default" value to the power_profile leads to "invalid argument" error.

echo default | sudo tee /sys/class/drm/card0/device/power_profile
tee: /sys/class/drm/card0/device/power_profile: Invalid argument

I would like to know why this is happening.