y mas ideas? voy a probar esto que he encontrado
suspend_backoff: This is a difficult one to nail down. Very difficult. To make a very long story short, this wakelock is caused when your phone wants to sleep, but a running process blocks it from doing so. Typically, this is going to be Wifi. Make sure your Wifi is set to stay awake when the phone sleeps. Otherwise, you risk the Wifi going out of its way to keep the phone from sleeping. This can also, unfortunately, be caused by apps, making it hard to pin down.
To fix: Do the Wifi thing, then reboot into recovery and wipe your caches. If it persists after that, you have no choice but to look at a dmesg output to pin it down. Go into a terminal emulator app and type the following commands, one per line:
su
dmesg >/mnt/sdcard/dmesg.txt
Next, transfer the .txt file onto your computer and open in WordPad or a similar program that automatically cuts line (i.e., no Notepad). Search the document looking for the word "event". You should find a lot of strings that look like this:
eventX-XXXX
Where the X's are all numbers. See those last four numbers after the dash? You should see them repeated again and again. Write them down, then go back into your terminal emulator. They are your process ID (PID). Once there, type:
ps
This will show you all processes that have run since your last boot. If you look at the second column from the left hand side of the page, and you should see a sequence of four numbers. These are listed sequentially, lowest to highest, as you come down the page. Scroll around until you find the sequence of four numbers that matches the one you wrote down. The line below those four numbers is the name of the process causing the wakelock. If it's instantly recognizable as an app, delete the app and see what happens. If it's a hardware thing that can easily be fixed, like Wifi, change your settings to accommodate it. If it's com.android.process.acore, I smell a wipe in your future. If you don't know what the process is, don't go screwing with things to find out. You can brick your phone in terminal emulators. Instead, write it down and Google it. Someone has already written about what this process is and what it does. If it's something you can easily fix, go for it. If it's a deeply-embedded system process, I'd just do a full wipe and clean reinstall.
Remember, terminal emulators can brick your phone if you're not careful. If you use them and something bad happens, or if you wreck your phone trying to fix this or any other wakelock, it is your problem, not mine.
There are a number of other, lesser KWLs that I'm not going to worry about here because you shouldn't worry about them either. You might occasionally see a battery cycle with very low (sub-1%) KWLs, but that's the exception and not at all the rule.
