Originally Posted by twped
Have the exact same problem and i cannot figue out whats causing it.
I will now greenify each app one by one althoug i have the feeling it in the kernel itself.
I think I have figured out. My guess is that it was google now, because i disabled it in launcher settings (long tap on wallpaper) and now the tablet sleeps, only wakelock was/is wlan, but its because my wifi is turned on all the time. I guess that because google now was listening for "ok google" (at least mine) all the time it was at min cpu state and maybe it didn't show up at partial wakelock because it was only connecting to web over some time.
Sent from my Nexus 7 using xda app-developers app