After doing a little more sleuthing, I found a thread here
https://groups.google.com/forum/#!searchin/beagleboard/sleep$20black|sort:date/beagleboard/euJIpxfSkl8/v1XjOLGzY_oJ
Does anybody run kernel 3.2 or 3.12 instead of 3.8? 

Looks like ARMhf *May *have something built.
https://groups.google.com/forum/#!searchin/beagleboard/power$20management|sort:date/beagleboard/M8fQtU-pJbI/SzSnBjwuT90J


On Friday, March 7, 2014 2:31:33 PM UTC-5, Ruben Kertesz wrote:
>
> I understand that this question has been asked before in various forms and 
> apologize to those who think this is a useless question. Go easy on me 
> (first time poster).
>
> I am working on using the BBB in an embedded environment. It has the power 
> I need to do image capture and machine vision processing as well as light 
> control and data logging. 
> The issue is that I only need to power it on once every 5 minutes (for a 
> very brief time). 
> I am looking into power management and see that some people have discussed 
> kernel 3.12 as being better than 3.8, others discussing using android. Is 
> there anybody who can definitively point me to how to control sleep or 
> standby states in between readings (with wake up by RTC or interrupt)?
> The SoC can do it but has anybody succesfully compiled a distro that takes 
> advantage of power management?
>
> Thank you so much,
> ruben
>

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