Apps may request a WAKE_LOCK to keep a device component from "sleeping", so they can perform a task even when the display is turned off. Obviously, those "Wakelocks" can become an issue for how long your battery's charge holds...

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31
votes
3answers
36k views

How to deal with (orphaned) WakeLocks?

I guess most of you at least have heard about WakeLocks. Many of you will have experienced them already -- wether knowingly or not. Some may know how to deal with them in general -- but only few know ...
7
votes
4answers
3k views

Why does my screen turn itself ON?

I am having a problem with my phone's screen arbitrarily turning itself on. It has been going on for a while, but I finally got a logcat of it, so here it is. If anyone can find anything in here ...
7
votes
1answer
6k views

l2_hsic prevents my device from Deep Sleep. How to fix it?

I have installed BetterBatteryStats and CPU SPY, because I noticed that I had a faster than normal battery consumption when the tab was left alone. I made a 30 mins test Wifi OFF, Flight Mode On, ...
6
votes
3answers
377 views

Why does the screen come on when my phone is plugged in but idle?

Sometimes when my Nexus One is plugged in with the screen switched off, the screen turns itself on (showing the lock screen) seemingly randomly, and I have the "Stay awake" Development option turned ...
6
votes
3answers
8k views

msm_otg kernel wakelock preventing deep sleep

Ever since upgrading my stock Sprint Galaxy S3 to the official Jelly Bean release, my phone won't go in deep sleep at all, it's constantly at 384MHz. It's because of msm_otg kernel wakelock. Anyone ...
4
votes
2answers
13k views

nlpwakelock and “Use wireless networks” option

Under "Location services" there is a "Use wireless networks" setting - whenever the setting is on, I get constant "nlpwakelocks" and the battery drains a lot faster. However, I see that this was ...
3
votes
4answers
2k views

Phone dropped in water - Now screen won't turn off (Samsung Galaxy S2 (SII))?

I currently have a Samsung Galaxy SII (S2)(I9100) that got dropped in water. I took the phone apart (removed the screws on the back and properly took the back off) and left it to dry in a warm place ...
3
votes
3answers
316 views

Phone kept awake for half an hour after arriving home

My Moto X (2014) running Lollipop 5.0.1 sometimes starts chewing through battery upon arriving home after being away (or, possibly, getting back on a wi-fi connection is the trigger?). It does this ...
3
votes
1answer
266 views

Battery Drain from mysterious wake locks

I have an huge battery drain issue on my OnePlus One running Android 4.4.2 on stock ROM CM11s O5Q with FrancoKernel R35. I googled and searched so many times but couldn't find anything and I am really ...
3
votes
1answer
391 views

How do I keep CPU off when charging?

When I connect the USB power source, it makes CPU to stay on (even though "Development->Stay awake" is off). When charging from a weak power source if makes battery to drain even faster than is case ...
2
votes
1answer
193 views

mm-qcamera-daemon wakelock when idle

My phone will randomly get the mm-qcamera-daemon wakelock. I know how to fix it, a simple reboot and all that, but it pops up when my phone is idle in my pocket. The phone starts to run hot and I ...
1
vote
0answers
16 views

Nexus 7 2013 is permanently awake

Note: I do not mean screen-on state, but awake state. My Nexus 7 is permanently awake. It is not rooted, so I could not easily check for wakelocks. I did try the method to run wakelock detector on a ...
1
vote
1answer
61 views

Device won't wakeup from power button

I used a Navigator app that prevents my device (Galaxy S2 with Cyanogenmod) from turning the screen off while plugged in. But at some point I could no longer wakeup the device screen with the power ...
1
vote
1answer
219 views

How do I keep my camera active on Android even when the phone is locked and screen sleeps?

When I play Ingress, Ingress remains active. Even when my screen goes black, if I push the power button, Ingress is still active. I do not need to unlock my phone nor wait for it to "wake up". (The ...
1
vote
0answers
1k views

Preventing certain WAKELOCKS (NlpCollectorWakeLock, NlpWakeLock) with shell? (e.g. pm command)

As some of you might aware of, the notorious 'NlpCollectorWakeLock' and 'NlpWakeLock' are often the cause of considerable battery drain. I personally make some custom ROMs, and would like to ...
1
vote
0answers
1k views

Delay on screen wake

When I push my power button to wake my device it takes 1-4 seconds for the screen to turn on and show the lock screenp. I have seen that others have solved the issue by turning off power-saving mode ...
1
vote
0answers
740 views

GTalk_ASYNC_CONN wakelock detailed report. Keeps draining batteries

It's been a month since I've tried dealing with this wakelock. I've read a lot of articles, including this. A week ago I was also dealing with NlpWakelockCollector, which sometimes gets stucked ...
0
votes
2answers
206 views

How to fix wakelock issue on Samsung Galaxy S5 SM-G900H running Lollipop?

I have a little problem with my Samsung Galaxy S5 SM-G900H from Orange Dominican Republic running Android 5.0. It happens that suddenly the phone ots having wakelocks and I dont know what to do ...
0
votes
0answers
30 views

How do I prevent apps from waking up Sony Xperia 3 compact?

I have a Sony Xperia Z3 compact, with Android 5.1.1. This phone is not rooted, and actually belongs to a friend, so I cannot root this phone. I am having battery life problems that appear to be a ...
0
votes
1answer
67 views

Disable Android Device Sleep Mode when connected with Power supply

I am working on a client requirement in which they wanted to disable android device going into the sleep mode when the external power supply is connected Does any one have come across this kind of ...
0
votes
0answers
489 views

Keep *all* CPU cores awake?

I own a tf700t running android 4.4.4, but I'm not happy with its performance, as there are many lags. So I thought about locking some of the cpu cores at a high frequency (yes I'm aware of the ...
0
votes
1answer
394 views

YouTube app holds a long wakelock. What app settings can I change to keep it from doing this?

I am using an HTC Evo 4g with Android 2.3.5 Gingerbread. I'm trying to deal with apps which keep my phone from entering sleep mode, and the YouTube app is a major offender. With downloaded apps, ...
0
votes
0answers
44 views

My Tablet ignore any Wi-fi/Wake lock

When my tablet goes to sleep mode (by pressing the power button) it always goes into a deep deep sleep, I think that when in this state there isn't any process executing, then on waking up it just ...
0
votes
0answers
149 views

suspend backoff

How to get rid of suspend backoff wakelock. It seems to be consuming maximum battery as per betterbatterystats. and battery drains very quickly. i am on paranoid android 4.4.4 galaxy s2. this problem ...
0
votes
0answers
150 views

Wake Up Delay with CyanogenMod

I'm using a HTC One S with the pacman ROM, based on CM 11. I had this problem also with the TwistedKat ROM. When I flashed the new ROM yesterday, there were no problems (as far as I remember) - so I ...
0
votes
0answers
196 views

My nexus 4 is awake 79% of the time… help?

So it's been some days my phone is keeping awake 79% of time. Below is the WLD screenshot. Screenshot of "Wakelock Detector" (click image for larger variant)
0
votes
0answers
608 views

What is exynos5-fb.1 wakelock?

Samsung Galaxy S4 running stock Android 4.3. This wakelock is mysterious. What is it? It's taking up a big chunk of my Awake time. How do I stop it? Thanks
0
votes
1answer
1k views

How to debug “wlan_wake kernel wakelock” on an unrooted device?

The question is as short as the title. I've a Samsung Galaxy Note 3 & it has started showing issues where the CPU remains in lowest possible frequency (250Mhz) and it doesn't go to deep sleep. I ...
0
votes
0answers
468 views

Fail to connect to ADB Wifi when device goes to idle state?

I am connecting to my Android phone with ADB WiFi (no USB plugged in). However, whenever my device goes to sleep, I am losing connection and unable to reconnect. In what I am trying to do, I need to ...