Ubuntu – How to set power_profile at boot

radeon

So when I log on, I go to a terminal and type

echo "mid" | sudo tee /sys/class/drm/card0/device/power_profile

which means my laptop works without the fan being constantly ON.

It would be great it I didn't have to do this; I would like this to be done for me, and without me having to enter the password for sudo.

Best Answer

Stick it in /etc/rc.local, before the exit statement.

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Ubuntu – What prevents setting ATI / radeon power_profile from boot and retaining it after suspend

I still don't know why the other solutions didn't work for me, but finally found a working solution using pm-utils. I'm not sure if it is the best way to do it but it does all I wished for: Set the radeon power_profile to low on boot and retain that setting after suspend-resume.

Step 1: Create hook

gksudo gedit /usr/lib/pm-utils/power.d/radeon-power_profile

Step 2: Fill in the desired setting

#!/bin/sh

echo profile > /sys/class/drm/card0/device/power_method
echo low > /sys/class/drm/card0/device/power_profile

exit 0

Step 3: Make it executable

sudo chmod +x /usr/lib/pm-utils/power.d/radeon-power_profile

That's it :)

Best Answer

Related Solutions

Ubuntu – What prevents setting ATI / radeon power_profile from boot and retaining it after suspend

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