So it's ok that if I run powertop then it suggest me to disable xy, etc., but after I exit powertop, reboot the pc, and start it again[powertop], it brings up the same tips again! So how can I permanently save the suggestions of powertop?
Quick answer :
You just need to save them in
This doesn't exactly save your powertop settings, but it does come with its own defaults which enable almost every powertop setting. It's called laptop-mode-tools.
You can edit the settings by running
Here is a link for more information http://samwel.tk/laptop_mode/
Saving to rc.local as stagelll mentions is probably the simplest way to do it, but it's obviously only good for a local fix.
Another way would be to craft a udev rule that applies the setting for the device in question. udev rules are more complicated to write but are safer to share with others.
For example, powertop suggested this:
which solved the particular issue I was interested in. But