[Testing] Automatic power management

[Paul Fox]

asiri -- thank you for the clear explanation.

power management is a tradeoff between saving power, and keeping
the laptop useful for the user (otherwise we would simply turn it
off altogether to save power ;-).

we try to acheive this goal is to save power by putting the laptop
into suspend when the user isn't obviously using the laptop -- i.e.,
when the laptop is idle.  (this is not something that can be determined
exactly, of course.)   in the case of audio and video, we assume
that the user would like to hear, or see, the music or movie they
have selected, so when we detect these activities, we try and inhibit
idle suspend.

so if there is buggy behavior, it's if the laptop _does_ suspend
while playing audio or video.

paul

asiri wrote:
 > Hi James
 > 
 > Thanks for both of you James & Paul , for your reply's.
 > 
 > I will explain my understanding on the OLPC power management functionality.
 > Please correct me if I am wrong.
 > 
 > 1.       When the Automatic Power Management option is set –
 > 
 > More important thing is saving the energy. So audio track must suspend
 > within a certain time duration (in every application that uses to play that
 > track)
 > 
 > 2.       When it is not set -
 > 
 > We want to play the audio track to end without suspending. That is, there is
 > no need of saving energy.
 > 
 > 
 > 
 > But when I test this feature on the OLPC laptop I observed that audio track
 > is not getting suspended after certain time duration though the Automatic
 > Power Management Option is enabled.
 > 
 > 
 > 
 > As per my understanding this seems a defect.
 > 
 > 
 > 
 > Appreciate your response.
 > 
 > 
 > Thanks,
 > Regards,
 > Asiri & Thusitha.
 > part 2     text/plain                 135
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=---------------------
 paul fox, pgf at laptop.org