MBP 5,3 Not Sleeping on Battery

[samh]

It seems that when I step away from my computer while it is on battery power, the display dims but the computer doesn't actually sleep. That means that within a short time, the battery drains completely (unlike if I close the lid).

Is that expected behavior? It seems like my MacBook Pro didn't always behave that way.

Something just occurred to me. Could hdapm cause this?

 

[GGJstudios]

You may find some useful ideas here:

Mac OS X: Why your Mac might not sleep or stay in sleep mode
Determine why your Mac wakes up from sleep
One sleep problem caused by printers - solved ... and another

 

[elpocholo7]

Open a new Terminal window and write pmset -g while running the mbp on battery

Then look out for displaysleep variable and check whether it's 0 (imposed by xxx) or not In case it's 0 then you should blame a particular application (xxx) to be the culprit !