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I've found my Nook Color three times awake when it shouldn't be... At least two of those times I had unplugged it from the charger and hadn't opened it up at all, just basically unplugged it and took it with me to work. The third time I'm not sure, but seems like it just happened in the middle of the day for no reason.
I've also found my wifes NC doing this, except hers I found the battery was dead.
Anyone else seeing this happen?
khaytsus said:
I've found my Nook Color three times awake when it shouldn't be... At least two of those times I had unplugged it from the charger and hadn't opened it up at all, just basically unplugged it and took it with me to work. The third time I'm not sure, but seems like it just happened in the middle of the day for no reason.
I've also found my wifes NC doing this, except hers I found the battery was dead.
Anyone else seeing this happen?
Click to expand...
Click to collapse
Yes, I had the same problem which caused mine to completely run down the battery this past weekend and as luck would have it I did not have my charger with me for the entire weekend.
But I had seen it on before when taking it out of my bag after traveling and knew that it was being caused by the fact that I had changed the wifi sleep in "spare parts" from Android default to Never.
Not sure if that is what is causing this issue for you, but you may want to take a look and see what your current wifi sleep setting are.
I changed it back and have not had that problem for that past couple of days.
I've had this happen a few times. My defense against this is to manually lock it before putting it down, or into a bag.
romeyp said:
Not sure if that is what is causing this issue for you, but you may want to take a look and see what your current wifi sleep setting are.
I changed it back and have not had that problem for that past couple of days.
Click to expand...
Click to collapse
Good point, I need to look... I don't think i changed the wifi sleep policy, but could be. My other idea is that maybe Setting Profiles is hanging it, but... Dunno.
spiicytuna said:
I've had this happen a few times. My defense against this is to manually lock it before putting it down, or into a bag.
Click to expand...
Click to collapse
Yeah, this seems to be a workaround.. Open the cover (mine lives in its cover), unplug, unlock, then turn off the screen. Seems good then. Just seems like that initial screen on when power is unplugged makes it stay awake sometimes.
I've also noticed something, although unrelated to this I think... When plugged in the device is always awake, even with the screen off. The Uptime widget has a "Wake on" or "Wake Percent" widget as well, and it's awake the entire time it's plugged in. Ah well.
Well I finally realized what was causing my Nook to wake up in the middle of the night sometimes and not go back to sleep; Titanium Backup! I had scheduled it to back up Wed/Sun at 3am, and sure enough the last two times it woke up and subsequently died overnight was at that time.
There is a preference to change the behavior of sleep during operations called WakeLocks Mode, so I've tried the "CPU Awake" vs "Screen awake" option just to see what happens.
So hopefully that helps, and at least I know what the deal is now. If the options in Ti Backup won't fix the issue I'll ask the developer, he might be able to to do something.
EDIT: Yep, this did fix the problem. No waking up to dead Nook Colors in the house anymore now.
The battery life on my NC is absolutely horrible. I average 3 hours unplugged, 1 hour if I'm using it. It doesn't seem to charge up all the way -- after plugging it in the light on the Nook cord is orange for about 10 minutes then goes green even though the screen still stays "Not enough power to turn on - Try again in 15 minutes".
I've tried using software like juicedefender and other battery mon apps that are supposed to be able to predict when you're going to lose your power -- but they appear to be useless. Often I'll get the "Your Battery is Getting Low" message at the very same time as the "Shutting Down" dialog appears -- almost like there was a very sudden dramatic drop in available power.
I am beginning to wonder if it's the result of faulty hardware.
Has anyone else experienced problems like these? Or should I restore back to stock and send it in for warranty?
That definitely sounds abnormal. I'd probably restore it back to factory and if it's still acting like that, you'll know it's not due to any modifications.
Yeah, I second that. Mine drains pretty quickly, I go from 100% to about 60% in a day with normal usage. I use Wifi Auto Toggle to turn Wifi off when the screen turns off. So far I have to recharge every other day or so. But what the OP has going on sounds pretty extreme.
What ROM are you using?
What programs have 'keep screen alive' do you run?
How bright is your screen?
Screen/wifi burn most of the power in this - so minimizing them helps battery life considerably.
I had one game (HexDefense) that prefers to run in maximum brightness and burned through the battery very quickly. Nook was the warmest I've ever seen it and the temperature on my battery monitor actually moved for the first time ever.
SO if you're getting 3 hours doing nothing, that's bad. If you're getting 3 hours running a really processor/graphic intensive game, that's good.
If you can get it back to stock and still have low battery life, consider talking to the manufacturers about it.
OverDrive33 said:
The battery life on my NC is absolutely horrible. I average 3 hours unplugged, 1 hour if I'm using it. It doesn't seem to charge up all the way -- after plugging it in the light on the Nook cord is orange for about 10 minutes then goes green even though the screen still stays "Not enough power to turn on - Try again in 15 minutes".
I've tried using software like juicedefender and other battery mon apps that are supposed to be able to predict when you're going to lose your power -- but they appear to be useless. Often I'll get the "Your Battery is Getting Low" message at the very same time as the "Shutting Down" dialog appears -- almost like there was a very sudden dramatic drop in available power.
I am beginning to wonder if it's the result of faulty hardware.
Has anyone else experienced problems like these? Or should I restore back to stock and send it in for warranty?
Click to expand...
Click to collapse
You really question this? Something is wrong with your NC, cable, or charger.
Hello deer XDA friends
My phone suddenly shut down by it self every 3-4 days sometimes when the battery above 50% , when i try to booted up it wont until i remove the battery then it start normally .
what do you think is the problem here?
sorry my English is very bad
Eltoro2010 said:
Hello deer XDA friends
My phone suddenly shut down by it self every 3-4 days sometimes when the battery above 50% , when i try to booted up it wont until i remove the battery then it start normally .
what do you think is the problem here?
sorry my English is very bad
Click to expand...
Click to collapse
You might have some rogue apps running that overheat the cpu. Look in taskmanager which apps are using much power. Download cpu spy free from the market to see if the cpu comes in deep sleep or not.
Good luck
I also have it occasionally. POWER+HOME button to reset. One time need to remove battery. Actually I felt like phone is still open but screen cannot come back. Next time I will call my phone when it happens.
I've had this happen twice. Both times a battery pull fixed it. At first I thought the phone was going dead, completely black and the power button would do nothing, but the second time I hit the volume button several times and it started beeping, so even though it looked completely dead, it was still turned on. I don't know what the problem is, but probably something software.
Which ROM/kernel are you using?
Any special CPU profiles?
How's the temperature?
Sent from my GT-N7000 using XDA App
happened a few times too. So, last time when I found it "dead" I did some test.
1. used my bluetooth headset (MW600) tried to play music, surprisingly music started playing but screen cannot turn on by any keys.
2. I called myself using another phone, Caller can hear ring normally and the call NOT dropped to voice mail, however my Note doesn't ring at all, screen still cannot turn on by any keys.
So it doesn't look like it's auto switched off by overheating, seems like unable to completely wake up after deep sleep.
Phone using Stock Rom(rooted with CWM), with System Power Saving mode turned on. I suspecting it's related to the power saving mode.
I'm also stock 2.3.5 rooted, with CWM, but do not have system power saving turned on. I haven't noticed any heat, but haven't monitored temperatures.
Do you also have the stock kernel?
Are you using setCPU?
Try using cpuspy, from market.
Sent from my GT-N7000 using XDA App
Dead
I also had this case yesterday for the first time. I bought it the 30th november.
Did not want to wakeup, darkscreen. Only way to recover was to remove battery. I am on 2.3.6 french.
I do not use Setcpu.
Mine is unroot. In other words, stock ROM and kernel.
I think it is software problem. And I think it is either Samsung software or Android system. Someone need to run logcat though.
For your information.
When you sure it's sleep dead(not shutdown cause by no battery)
Disconnect any charger/USB connected. Press and hold the power switch for around 10-15 sec,
that will restart the phone, no need remove that inconvenient back cover for battery pull.
alexchan.ccs said:
For your information.
When you sure it's sleep dead(not shutdown cause by no battery)
Disconnect any charger/USB connected. Press and hold the power switch for around 10-15 sec,
that will restart the phone, no need remove that inconvenient back cover for battery pull.
Click to expand...
Click to collapse
The first time it happened to me I tried holding the power button but it didn't work, so I did the battery pull. I haven't tried again since then.
Sudden Shutdown
Mine too i've experience it 3 times, this happen when im opening some applications sudden black screen and restarted cannot access back button, haven't tried the power button. It just restarted thats it!!! Im at stock kernel unrooted 2.3.6 so what do you think guys should i root or just wait for Ice Scream Sandwich upgrade?
maxh said:
The first time it happened to me I tried holding the power button but it didn't work, so I did the battery pull. I haven't tried again since then.
Click to expand...
Click to collapse
See if you hold the button long enough for over 10 seconds, before I would release and think power button not work after 7-8 seconds.
I have experienced "sleep of death" many times on different firmware versions. I has never happened since I flashed KL3. I'm on AbyssNote 2.1 kernel.
update:
since I replaced the stock launcher & locker, no more sleep dead issues. I suspect the problem source is stock locker or some stock widgets. Also, battery last longer too.
now using: widget locker + awd launcher ex + multi-picture live wall paper.
For those wonder why phone can't wake up for some reason, a user at the green power app forum had got the solid evidence.
http://greenpower.pouzerate.com/ind...-s2-freeze--black-screen?limit=6&start=48#465
"And if then it looks like the touchwiz launcher has crashed and changed pid when restarting without telling the InputManagerService about it, so it can't wake up the screen for that reason."
So the culprit is the stock launcher. And this matched with my experience even after I uninstalled green power free, my phone still have "not waking up" problem . But since switched to use 3rd party lock and launcher for a month, the "not waking up" never happens again.
This happened to me for the first time yesterday, when I eventually got it restarted by removing the battery, it was at 88% so don't think it was overheating, otherwise it would be much lower. Also I had Go launcher Ex running so touch wiz unlikely to be the culprit. Maybe some widget, I have loads!
alexchan.ccs said:
For those wonder why phone can't wake up for some reason, a user at the green power app forum had got the solid evidence.
http://greenpower.pouzerate.com/ind...-s2-freeze--black-screen?limit=6&start=48#465
"And if then it looks like the touchwiz launcher has crashed and changed pid when restarting without telling the InputManagerService about it, so it can't wake up the screen for that reason."
So the culprit is the stock launcher. And this matched with my experience even after I uninstalled green power free, my phone still have "not waking up" problem . But since switched to use 3rd party lock and launcher for a month, the "not waking up" never happens again.
Click to expand...
Click to collapse
This actually fits well with my experience. Touchwiz crashes on me occasionally and just last night I was experiencing the sleep of death thing. This time I thought it might have been the battery, so plugged in the charger and that somehow woke the screen back up to show touchwiz in the process of starting up, caught red handed!
This has happened to me as well 3 times, and every time it has been related to using a highres picture on the stock locker. It would lag out on unlock, black screen of death, which i would have to batt pull to fix. Didn't realize i had to hold down the power button for 15 secs to achieve the same thing. Have since switched to a low res pic on lock screen and haven't experienced the issue since. Will try the alternative locker solution if it happens again.
So here's the deal. Wasn't getting great idle drain but figured I'd give it a while to see if it worked itself out. It hasn't. Took my phone off the charger and slept for less than 8 ours and loss almost 16% about 2% per hour.
I had wifi on. Blue tooth off. gps off. i have greenify stopping my voicemail and facebook app. I have about 60 something apps frozen. Android OS took up most of my battery life as you can see in pictures. Went to partial wakelocks and saw email at 30seconds but there are only like 45 secs of partial wakelocks so not that big of a deal. Noticed that better battery stats said my phone was awake for almost an hour (I was on it for 10 minutes looking at stuff which is why the screen on pic saus about 10 minutes, the screen wasn't on at all from unplug to me waking up). Noticed under kernal lock that something was keeping stuff on for almost an hour.
So why on earth was my phone on for almost an hour of the 8 hours i was asleep? Further, why does my battery drain look like it was pretty consistent over that time even though the phone was on for an hour. It makes me think that it continuously must be turning itself back on. I know that wifi is the problem for some people but I figured that I would be able to see that in partial wakelocks yet it isn't there. I can try changing wifi stuff if some sees something showing that it is wifi issues.
Otherwise, maybe i should return the phone???
So , I would say that the main issue is your mail service process. It woke up 184 times, every time it wakes its going to keep the phone awake for a little before the phone completely goes back to sleep. it is work related i assume?
anotherfiz said:
So , I would say that the main issue is your mail service process. It woke up 184 times, every time it wakes its going to keep the phone awake for a little before the phone completely goes back to sleep. it is work related i assume?
Click to expand...
Click to collapse
yes that mail account is work and there is an account for my school. It is the email apk that bypasses security that plenty of other people are running. Do you think that it is an account issue or the Email.apk? So the 180 wake ups only totaled for 30 something seconds of partial wakelock. Is it not showing upas a partial wakelock and that is why the phone says that it was on for so long?
also, I read that something having to do with wifi and the qcom_rx_wakelock cause severe battery drain. Know anything about that.
So, yes, the app only worked for 33 seconds because each wakelock probably required only a few milliseconds to do what it needed to do.. but the phone does not go to sleep instantly after each wakelock. so for each of the 184 times that app woke your phone up, it was "awake" for 5-15 seconds or however long it takes the phone to decide its time to go to sleep again. Awake time for me is almost always a function of screen time, like 1.5x - 2x my screen time.
anotherfiz said:
So, yes, the app only worked for 33 seconds because each wakelock probably required only a few milliseconds to do what it needed to do.. but the phone does not go to sleep instantly after each wakelock. so for each of the 184 times that app woke your phone up, it was "awake" for 5-15 seconds or however long it takes the phone to decide its time to go to sleep again. Awake time for me is almost always a function of screen time, like 1.5x - 2x my screen time.
Click to expand...
Click to collapse
so any idea on a solution besides setting up for my email to only check every half hour. It is set to push right now. Given I don't need it at night really and i can set something up to change when it is allowed to check for emails. But sometimes I am up at 2 because I get an email that requires me to do work. Also, the qcom_rx_wakelock that kept m phone on for 32 minutes or something doesn't seem to have to do with the email. But maybe when the email tries to access the internet that wakelock runs to try to get wifi...
edit: I did more research on the qcom_rx_wakelock. I still don't understand it all but it is some issue that the 4.2.2 update came with. It causes major battery drain on some wifi networks and not on some others. It has to do with the wifi connection continuously having to talk to the router and waking the phone up which is also tied to some apps that are syncing. People on nexus's have created patches that fix the issue, but I don't think I'm going to be doing anything like that. I PMd a member to try and get more information.
For now I have two routers at my house and will be switching to using the other router for my wifi connection on my phone to see if it creates the same battery draining issues while in sleep. If I get any more information I will update again. I also think this could explain a lot of the reason that some people are experiencing sub-par battery life while others are getting great battery life. Depending on what router (work, school, home, public place) you are on might make the phone constantly turn itself on and off trying to reconnect or do something with that wifi network. I know many people have had 15 to 20% battery drain overnight then turned wifi off and just stayed on 3g/4g connection and battery drain went to 4 to 5% over night. FYI
I just got the Moto X and have a few things installed. My question is, in the battery mete graph you have screen on and awake. Is the awake always supposed to be on? I'm guessing it is since it has the touchless controls always listening.
Figured why it won't go to sleep. Has anyone ever had it where the phone app gets stuck and stays awake? Only way to get rid of it for me is to reboot.
My Tablet lasts 2 days before its totally dead with ZERO USE!
Updated to 5.0.2 as i hoped this would fix it. No change
Lost 10% battery while in power saver mode in a few hours!
Lags all over the place when scrolling, the play store is horrible when scrolling apps.
Right now my S6 has better standby on 4G and more life in use than my tablet has with no use!
Any ideas?
Can't speak for Lollipop, since staying with 4.4.2 and disabled auto updates. I only lose 2% in ten hours and the best Android tablet I have owned- especially in regards to low sleep bleed.
clearly something is not right have you factory reset it? That would be the first thing to make sure no apps are doing anything weird.
I flashed a whole new OS... should i wipe it?
You need to install a wake-lock checker, it will show how much time your tablet is actually in deep sleep mode, which uses the least amount of power, mine shows 97% time in deep sleep.
Some application can keep you tablet from going to sleep, alarm clock and sync can also, and apps/software you downloaded.
Do you get still get major battery drain after a reset, dont install any software/apps and the charge to 100% and then leve it for a few hours and then check how much power you have lost.
John.
Over an 8 hour period (avg) with wifi on, my screen brightness set to 10-20 range (that is the brightness I prefer on my tab s), and with greenify I lose maybe 1-2% battery. You definitely have some program or service constantly running or waking up your tablet, and due to the interactive governor that samsung uses your tablet wakes up at 1.9GHz each time to be more responsive/save battery by handling what ever is needed as fast as possible so it can sleep again. Unfortunatly if some app keeps going "hey, hey, I am here, I need you tablet, hey, hey, ect........." that battery saving governor will murder your battery.
So i wiped and its still 48 hour batter!
Battery %bleed
Losing around 30% battery over night idle.
*wifi & sync on...
-Ahmed-
Do you need to have your wifi and sync on for business or something, if not turn them off, of use an app to to mange them like the free juice defender ect.
Just install it, make sure it is enabled and then make sure the icon is on your taskbar so it has not been killed, and them forget about it for a week and see how it goes.
https://play.google.com/store/apps/details?id=com.latedroid.juicedefender&hl=en
John.
geminiahmed said:
Losing around 30% battery over night idle.
*wifi & sync on...
-Ahmed-
Click to expand...
Click to collapse
for some reason on this tablet, wifi murders battery in standby. if you turn it off it lasts much better... but this tablet and this tablet only, leaving wifi on kills it horribly. but problem is, when you wake it for teh first time in hours and wifi activates, all of a sudden everything syncs and it's so damn laggy those first few minutes of use. it sucks. only this tablet. never had this issue with my nexus 7. that thing gave me 7 days stand-by time.
Sent from my Samsung Galaxy Note 4 using Tapatalk.
Try putting your tablet in airplane more overnight and see how much power it consumes. I lose 3% over 8 hours when I put it on airplane mode and disable wifi.
Im sorry but this is BS.
Its clearly faulty. its going to samsung. i demand a refund.
How much power wifi uses depends on the distance to the router and how much interference it has to try and break though to get a good connection which means using more power, that is why wifi uses more battery power on some peoples tablets than others do.
John.
disregard.. just realized my screen shots were messed up. I'll post my standby time tomorrow.
Here is a very simple stock no root mini guide to getting 1-5% loss over an 8-10 hour period while sleeping or at least while the tablet is asleep.
1. Install greenify even if you are not rooted and even if you do that have the donor package there are many many apps that do not like to sleep, greenify will fix that for you.
2. Unless you are a Doctor, CEO, or someone whose very life hangs on getting the latest cute cat post while you are asleep try to adjust your sync times from under an hour to as high as you can. (If you are turning off wifi then it might still matter if the app wakes up your device just to see it can't sync)
3. Samsung has given you a very nice QHD screen. It is high resolution, Amoled, and other nice rhings but while you sleep you can not see it so turn the brightness down before you touch the power button to 5-15. If you wake up in a dark room and need to use your tablet that level of brightness is far kinder to your eyes and even kinder to your battery.
Just doing this generally kept my battery usage down to only 2-4% per night, of course then I rooted my tablet and installed TW detox 3.0 and now it is closer to 1-2% per night. Try any or all of these and I hope it works out.
acdbrn2000 said:
Here is a very simple stock no root mini guide to getting 1-5% loss over an 8-10 hour period while sleeping or at least while the tablet is asleep.
1. Install greenify even if you are not rooted and even if you do that have the donor package there are many many apps that do not like to sleep, greenify will fix that for you.
2. Unless you are a Doctor, CEO, or someone whose very life hangs on getting the latest cute cat post while you are asleep try to adjust your sync times from under an hour to as high as you can. (If you are turning off wifi then it might still matter if the app wakes up your device just to see it can't sync)
3. Samsung has given you a very nice QHD screen. It is high resolution, Amoled, and other nice rhings but while you sleep you can not see it so turn the brightness down before you touch the power button to 5-15. If you wake up in a dark room and need to use your tablet that level of brightness is far kinder to your eyes and even kinder to your battery.
Just doing this generally kept my battery usage down to only 2-4% per night, of course then I rooted my tablet and installed TW detox 3.0 and now it is closer to 1-2% per night. Try any or all of these and I hope it works out.
Click to expand...
Click to collapse
losing 48% per day... screen brightness wont help will it when screen is off all day
Screen brightness is for those times that an app wakes up the tablet and turns on the screen to tell you something (new email, facebook wall post, new cat video, ect....) and yes it helps.
If you are losing 48% a day then you have some app doing something that is keeping your tablet awake for a good portion of the day. Or you have a defective battery/tablet. I can surf the web for a good portion of the day and maybe lose 48%.
irzero said:
losing 48% per day... screen brightness wont help will it when screen is off all day
Click to expand...
Click to collapse
Are you rooted. It's sounds like you have some wakelocks? If rooted you should use greenify and a wakelock alarm to fix the problem.
i'm curious to see what apps and how many you have installed. Can you post screen shots of your app drawer?
acdbrn2000 said:
Screen brightness is for those times that an app wakes up the tablet and turns on the screen to tell you something (new email, facebook wall post, new cat video, ect....) and yes it helps.
If you are losing 48% a day then you have some app doing something that is keeping your tablet awake for a good portion of the day. Or you have a defective battery/tablet. I can surf the web for a good portion of the day and maybe lose 48%.
Click to expand...
Click to collapse
what email apps and cat video watching apps are you using that turn the screen on? no app that I have EVER turns my screen on at all. the only app that does that is on my phone, and it's from textra, an sms app that isn't on my tablet.
Sent from my Samsung Galaxy Note 4 using Tapatalk.