Originally Posted by mrnovanova
I read in the root thread that the lack of deep sleep is due to root itself. If you can show me how to check for deep sleep on a non rooted device id be happy to check for you.
You can use most CPU apps, even though they won't be able to change CPU settings because of lack of root, they will show you CPU times, and most importantly offline mode. I use my own app for that, allowing to track battery history as well and also showing CPU times. You can try the following apps which will definitely show you deep-sleep: 3C CPU Manager or System Tuner or 3C Toolbox, all 3 are free (with ads).
In 3C CPU Manager, in first tab, called CPU, you'll see a 'Sleep' meter on top of the 3 graphs. That will indicate actual sleep time, versus run time. Mine is (was) showing nothing (eg 0 deep-sleep). In second tab called Times, you can check each CPU frequencies time used, it should show offline time, if not that means no deep-sleep! Screenshots were attached in OP.
Originally Posted by MrHardplastic
I didn't root my phone, and last night I lost 20% over night during sleep
If my calculation is correct I lost almost 3% per hour while my phone not in use
I guess my phone don't know how to sleep properly
This seems to suggest this has nothing to do with rooting in the first place. I've only got one rooted app on my device, as always and never seen this caused by root. I've seen it caused by bugged ROMs, bugged kernels and more rarely by recovery issues, but not with my setup.
Anyway, I just rebooted less than an hour ago, and just realized it's going into deep-sleep now! Didn't change recovery which eliminate this as the culprit. Was only developping some new notification for the edge screen all afternoon. Didn't uninstall anything or changed any particular settings either except Edge screen feeds, disabling all feeds except notification and my own new feeds. Maybe that helped?
Also activated the panel left of the home screen with minimal news feeds, tech and science, but I don't see how it would relate to this.