Enabling the power management for SATA link

Question

After tearing down my laptop, I came to know that most of the heating issue in my laptop is caused by HDD. Powertop is also showing the same problem. I am seeing significantly cooling after activating the power saving mode using the powertop but it is not permanent. In next reboot it will again reset.

Powertop output: Bad Enable SATA link power management for /dev/sda

I have already activated the laptop-mode tool and set all the HDD power option in laptop-mode.conf file, but Non of them resolving my problem

Please anyone suggest any solution to this problem?

How can I make the Powertop suggestion permanent.

Thanks

Answer 1

Have a look at this: TLP

Among other stuff, theres this option in the config file:

# SATA aggressive link power management (ALPM):
# min_power/medium_power/max_performance
SATA_LINKPWR_ON_AC=max_performance
SATA_LINKPWR_ON_BAT=min_power

I find TLP quite useful, as it combines several PM utils and options in one package.

Additionally you might want to re-enable PCIE_ASPM in your kernel (the famous kernel PM regression) -