[alsa-devel] hda intel - power save - need more help

[Takashi Iwai]

At Mon, 2 Jun 2008 12:15:06 +0530,
Harsha priya gupta wrote:
> 
> I checked on these articles on powertop...i manually set it the value to 10
> for *POWER_SAVE_DEFAULT but still don't see any power saving...

Check whether it's really set to 10 in
/sys/modules/snd_hda_intel/parameters/power_save.

Also, the power-save is turned on only when all analog loopback
switches are off, e.g. Mic Playback Switch or Beep Playback Switch
must be off.  Otherwise the analog part must be powered on.


Takashi