[alsa-devel] alc262 - hda intel driver - power save not working

[Takashi Iwai]

At Wed, 18 Jun 2008 17:02:23 +0530,
Harsha priya gupta wrote:
> 
> Hi,
> 
> Have been working on this to get the power save option to work for ALC262
> using intel hda driver. (ALSA 2.16v, Kernel-2.6.22.18-1)
> 
> Once i load the driver, the power_save_controller shows 'y' indicating its
> enabled and power_save value is set to'10'
> Still i dont see the driver going into d3 state when there is no playback or
> capture happening.
> I also made sure that i play a file, close the player and mute the controls.
> I wait for 10 seconds and still see the power consumed is the same whereas I
> expect the power to come down.
> 
> Please help me with more clues as to what i could be doing wrong or missing
> here.
> Any clue will be greatly appreciated as i am needing to resolve this ASAP.

Many people reported that the power-saving works, so I guess it's
a matter of mixer setup (of course, possible that it be
alc262-specific bug, though).

Please run alsa-info.sh (you can pass --no-upload option) and show the
output for better analysis.


Takashi