powertop does this:

echo 1 > /sys/module/snd_hda_intel/parameters/power_save

(В ответ на комментарий №0)

> the things that
> constantly consumed most power were:

A tiny clarification:

of course, that's probably not *the* most power consumption, but these things consumed more power than any other thing. (Around 5W-10W)

(In reply to comment #1)
> powertop does this:
> 
> echo 1 > /sys/module/snd_hda_intel/parameters/power_save

Actually, it's not a false/true parameter (as I thought).

# modinfo snd_hda_intel
....
parm:           power_save:Automatic power-saving timeout (in second, 0 = disable). (xint)
parm:           power_save_controller:Reset controller in power save mode. (bool)

One may consider other greater number of seconds, too, if one wants to enable power-saving...

Продукт более не поддерживается. Если актуально, то необходимо перевешать на новый поддерживаемый репозиторий (p10, p11, Sisyphus).