sleeping too lightly

[Randy Bush]

>>> thinkpad t40p
>>> pretty current
>>> 
>>> S3 does suspend, and i have successfully tied it to the key and lid.
>>> but it seems to burn battery anyway, like five hours eats 40% of it,
>>> and it sleeps quite warmly.  any clues?
>> 
>> Isn't it supposed to? I believe that you need S4 for complete poweroff. 
>> acpiconf(8) says something along these lines, too.
> 
> True, but it shouldn't eat battery that fast.  This sounds similar to what 
> happens on my system, turns out that the display isn't completely turned 
> off, only the backlight is turned off, and if you look really carefully 
> you can still see the video adapter is being powered.

aha!  bingo!

randy