Stop power managment registry settings from changing

[Guest notaliberal]

Tried searching for an answer, can't immediately find one...

When I set my timeouts in HKLM\System\CurrentControlSet\Control\Power\Timeouts (typically set the user idle and system idle for battery to 10 and 20, respectively), it works fine and everything times out correctly. Then, some random amount of time later, with or without a soft-reset, I'll look at the phone and find the screen still on. I check and, sure enough, the registry settings I changed have somehow changed on their own, and they always change to 0, which stops the screen from timing out all together.

I have not gone into Settings -> Power Management as I know that will reset the values.

So, anybody know why this keeps happening or, more importantly, how to make the settings STAY?

All ideas welcome please!!

TIA,

Jeff