Database Users

Nook's endless freezes

Hello everybody. I need a help with next situation.
I bought my nook like month ago and rooted it with TouchNooter after a couple of days. Everything worked fine for me - coolreader + goldendict, wi-fi, everything. One thing that did not satisfy me was energy drain, so i tried to install another ROM with "minimalistic" package on board. Before i switched i did factory reset and factory restore - my nook has 1.1.0 stock version on board. Unfortunately i discovered that "minimalistic" ROM does not contain android market - so i would not be able to install GoldenDict properly (because programme askes for license check). So i decided to revert back to TouchNooter (with factory reset and restore ofc).
Since then my nook keeps freezing all the time - whatever i do - its just freezes.
If Im trying to read a book with both default reader/coolreader - its freezes after couple of pages. If Im trying to press settings - its freezes again. And it wont boot up without power supply - i need to plug my nook via usb to my PC or to jack.
With energy supply it works fine without any random freezes, reboots etc.
I made a conclusion that its not about ROM (i tried like 30 times factory reset/restore. I tried both versions of n2T Recovery. I tried to use Touch-Formatter.) My device keeps freezing even totally unrooted -i have to plug my device into PC in order to complete registraion process - otherwise it will freeze before my attempt to connect. My nook cant work on its own - it should be plugged in into power source.
So i tried to charge my nook more than it requires - i left it charging for a day with jack. after i unplugged it battery stats shown me 100%. I started to read. Notably that i spend half day reading and using goldendict without any problems, but when my battery drained to 93% my nook started to freezing again.
I just dont understand what is the problem. Why does my nook work fine with cable and cant live without it? One thing i did not do yet is to disassemble my nook and trying to unplug/plug battery - i dont know how it can help but i dont have any options left...
I hope you guys can help me coz i've tried to find same problem and haven't succeeded. Thank you!

Most battery systems require calibration. To do this you need to charge it to full, drain it to low power.. around 10%. 3-4 times is the usual number needed. It sounds like you are having some sort of battery problem and calibration may make the meter read properly. Otherwise it might be time to try for a warranty replacement.
Every time you change roms you need to allow for the calibration period again.

I doubt that the battery calibration is that far out, but you can try:
Code:
am start -n com.android.settings/.BatteryInfo
That will give you all the numbers on your battery.
Voltage goes from a high of 4.200 to about 3.800 as dead.

Renate NST said:
I doubt that the battery calibration is that far out, but you can try:
Code:
am start -n com.android.settings/.BatteryInfo
That will give you all the numbers on your battery.
Voltage goes from a high of 4.200 to about 3.800 as dead.
Click to expand...
Click to collapse
Thank you Renate, but how do i perfrom this and what should i do with all this numbers?
To Nova - i cant charge/recharge my battery several times in order to re-calibrate it - because as i said it simply freezes once been plugged off

That was a command you type in a shell on the Nook, normally over ADB.
You do have ADB working?
It sounds like your battery has simply had an early failure.
I'd try restoring it to stock and returning it under warranty.

This teleir
Renate NST said:
That was a command you type in a shell on the Nook, normally over ADB.
You do have ADB working?
It sounds like your battery has simply had an early failure.
I'd try restoring it to stock and returning it under warranty.
Click to expand...
Click to collapse
I think i'll just return it...but im afraid that other device will have same issue...hope its not that regular

mine too
I'm also experiencing freezes with my NST (rooted 1.1.2). It has 1 1/2 year with light use (approx 30 mins per day).
Whenever the battery reaches 95-80% my nook would start to freeze.
I've tried using "Battery Calibration" app to restart the battery counter but it didn't help.
I know it's a battery related problem but I wouldn't say it's a hardware problem because it doesn't show the "too low to power on" message. Show I unroot my Nook?
Any suggestions?

Did you try looking at your battery info - as Renate shows in post #3
in adb shell :
am start -n com.android.settings/.BatteryInfo
Voltage goes from a high of 4.200 to about 3.800 as dead.

I'm checking with Battery Calibration app. It now shows 96% and 4033mV
I'll recheck it on the next freeze.
ladykayaker said:
Did you try looking at your battery info - as Renate shows in post #3
in adb shell :
am start -n com.android.settings/.BatteryInfo
Voltage goes from a high of 4.200 to about 3.800 as dead.
Click to expand...
Click to collapse

Well, clearly that's wrong as 4.0 volts is not 96%
Can you charge the thing to around 4.200 volts?
Run the battery calibrator reset only when it's at 100% (or so they say).
Does the battery health indicator say good?

Yes, the battery health reads good. I reset the battery calibrator when the actual led light turned to green (my nook was showing 100% a lot before that).
Today the battery was showing 93% and 4014mV.
I maybe onto something. I experienced something weird. I kept reading using the official nook app and checking from time to time the battery app. It was always somewhere 92-93% and 4014-4012mV. Seconds after I highlighted a word the nook froze. I rebooted and immediately I read the battery app. I read 92% 3895mV. I waited a moment and then it went back up to 4010mV.
It seems there something going on on CPU intensive tasks. I wonder if the battery is acting weird or there is some task that misreads the battery status ands freezes the device.
What do you think?
Renate NST said:
Well, clearly that's wrong as 4.0 volts is not 96%
Can you charge the thing to around 4.200 volts?
Run the battery calibrator reset only when it's at 100% (or so they say).
Does the battery health indicator say good?
Click to expand...
Click to collapse

I've found this suggestion in Mobileread forum
http://www.mobileread.com/forums/showpost.php?p=2186779&postcount=103
I opened my nook, disconnected the battery and put all things back. So far it seems the freezes are gone. I'll report any problems!

I've doing this for a couple of months now (once every 2), no freezes anymore.
Perhaps the NST power handling firmware has a bug? Been seeing this issue fixed by that on several forums.

[Q] Nook ST freezes

Hey,
I've been using my Nook for more than a year now and have just recently started college so using it has became immensely important for my studying. However, for a longer period of time I've been experiencing a freezing problem on my Nook. It didn't really bother me a lot before as it wouldn't occur very often - only when the battery is half drained would the device freeze, usually within a minute of unlocking the device (tho that's not always the case). At that point I would restart it by holding the lock/unlock button, and then it worked normally for some time.
Recently I've been really using my Nook day and night and the battery charge seems to drop more easily then before, and considering that reaching the "freezing point" on the battery is not so hard now, the freezing is becoming ever so annoying.
In accordance to these events I have tried to "fix" the problem. I rooted my Nook almost the second day after opening the box and have been very satisfied with the ability of reading PDFs with other apps, especially now on college. I have therefor thought of the root as the source of All the Evil, and tried to reroot the device, as well as factory restoring it by a couple of methods (of which none had the desired effect to remove the root, or at least the rooted start up screen). So far no solution, done by my amateur knowledge of android hacking, has produced the effect of removing the freezing plague. So I thought I should ask for the help of xda community if they had any advice on how to proceed in this bamboozling situation.
P.S. The funny thing I noticed that the device will not freeze if plugged in to the wall outlet or the PC, if that's of any use.
P.P.S. I'm using the 1.1.0. version of software, not sure what else is relevant for the problem, but please do ask..

The battery, the battery circuit or the battery discharge calibration curve may be out of whack.
Try looking at actual voltage:
Code:
am start -n com.android.settings/.BatteryInfo
See at what voltage it dies.

Hey, thanks for your reply!
I'm just wondering how exactly do I go and enter this code? Should I get an terminal emulator app and type it there?
Also, I have done some thinking and thought that my SD card might be causing the freeze, since it's not the most reliable card I have. Therefor I copied all my books from it to the device internal memory and removed the card from the device, but unfortunatly it produced no visible effect - device just froze on me minutes ago even without the card..

That command goes into the Linux shell in Nook, either through the ADB shell or a terminal app.
If you have a non-stock Settings.apk "Battery Info" might be directly accessible.

Hey again, and thanks for helping me
So I installed a terminal emulator, and ran your piece of code and this are the results:
While charging battery voltage is 4194mV and while unplugged it's around 3850mV +- 50mV.
Also the funny thing I noticed today was that my Nook froze and at the moment I had a PDF document opened in PerfectViewer which was set up to display battery percent as well as time. The percentage at which Nook froze was 55%. I left it frozen like that until I got home and plugged it in the wall (perhaps 2 or 3 hours have passed in between) - that's when it came back to life and restarted. When it powered on I opened settings and the battery percent was at 27%. So in that short time span of "being frozen" the battery charge level droped for around half of the current level!
Could it be that it's actually doing something else in the background that tends to use a lot of my CPU/battery and the screen and buttons just do not respond while this "process" or whatever is running?
22:51 edit:
I have used my SD card and flashed CWM on it and then used it to install Touch-formatterv2 on my Nook. I have then set up the device and no less than a minute since the Nook froze while I was just browsing the empty library.. Could this be a hardware issue?

any significant errors / warnings in logcat?
which process is running when its freezing, is wifi on/off etc
Hope this helps...

The idea was that percentage values are not reliable and to see if your Nook was dying at the same voltage all the time without noticing that the battery was too low.

Renate NST said:
The idea was that percentage values are not reliable and to see if your Nook was dying at the same voltage all the time without noticing that the battery was too low.
Click to expand...
Click to collapse
Okay so if I understood your thought correctly my battery display was "broken" and showed different values from the actual value of the battery. So when the battery drained the Nook would turn off but the battery meter would nonetheless show a half full battery. I think this is not the case, since it did occur only on somewhere around half the battery (50-60% and lower) but the thing is that that would just be the starting point. The freeze would happen regularly once or twice per day and I could continue using my Nook even without charging it back to full only with the risk of it freezing from time to time and having it restarted. Meaning that the battery display is probably accurate, since I still got to use the device until it completely dried out but with occasional freezing.
@jam_dev - I have currently restored to the unrooted stock firmware and therefor can't check any (that I know of) log to see for errors. But in do time, if the problem keeps occurring even on stock I will root it and set up a logging app to see what is actually happening in the time of the freeze. Thanks for the idea, and I'll keep you posted (if anyone actually bothers reading this thread)

[Q] Problems with my nook simple touch

Hello , i have a huge problem with my nook : the batery.
It is a new nook,i tried as it come and all was perfect but i upgrade to 1.2 and rooted it
with NookManager after making a Image with Noogie.
I disable the app and all was ok.I also install a few programs :
norefresh ,no settings,button savior,orion pdf and styletap
When i see the services it said:
task :
relaunch (always is consuming ,with a mean of 12 % )
library
system
appstore
dialer
services:
android system (also always consuming ,with a mean of 14%)
no refresh
no setting
cloud service
test center
device manager
I have charged full the nook a week ago,i have used it 10 min ,and now i was to use it,it has dicharged.(i look it 3/4 days after and it had lost
a lot of batery,being on standby.
What can i do?
I would like use it for reading and also if it is posible conect a usb-keyboard and write also.
thanks

Yes. I have the same problem. My Nook quickly discharged. Just for a few days.

cualquiercosa327 said:
I have charged full the nook a week ago,i have used it 10 min ,and now i was to use it,it has dicharged.(i look it 3/4 days after and it had lost
a lot of batery,being on standby.
What can i do?
Click to expand...
Click to collapse
Orion PDF and StyleTap are the only things you list that I don't have on mine, and my Nook's batter lasts much better than that. Do you turn WiFi off when not in use? How do you put it to sleep (leave the screensaver to come on, push and hold the 'n' key, use Button Savior's soft power button, or push and hold the rear power button to turn it off entirely)? I use combinations of the first three, and always turn off WiFi when I've finished with it.
First step would be try removing those apps, recharge to 100% and see how it lasts after.
If that doesn't fix it, restore your backup and return it to stock and see if that changes the behaviour. If it doesn't, your battery is probably bad. I think there's a lot of new old stock being shifted at the budget prices right now, and LiOn batteries only have a nominal lifespan of ~3 years from manufacture.

[Q] Battery Drainage on a Simple Touch with GlowLight

So, what is the deal with the battery drainage?
I have had my Simple Touch with Glowlight for about 8 months or so now. The first thing I did was root it using the NTGAppsAttack method of rooting. For about 6 months, not a single problem with the battery. It was last for months of reading, even using the Glowlight. Then all of a sudden, it drains constantly..
I have Googled and tried all kinds of things: cleaned the screen real well (someone thought there was lint caught in the bottom of the screen), wifi is ALWAYS turned OFF, putting it to sleep while in the stock e-reader app, putting it to sleep while in the home screen, not putting it to sleep, and letting it put itself to sleep in both the ereader and home screen. Some times it works fine, and the battery lasts, sometimes it drains the battery 20% over night. There seems to be no rhyme or reason to when it will drain the battery.
Does anyone have any more suggestions? Is it the rooted part of the equation (it doesn't seem to be as stock readers seem to be effected as well)? I am really at my wits end here. My plan was to unroot, return to stock, hard reset and try just stock. I really only use the rooted part to download my books from Dropbox so I don't have to plug it into a computer to charge it. If I have to plug it in every once in a while to an actual computer, but the battery lasts, then I am ok with it.. Next step was to return to stock and try and warranty the thing. OR, return to stock and sell the thing on eBay to buy a new Glowlight..
Any help anyone can provide would really be appreciated.. Hopefully someone figured out what the deal is with this thing..
Thanks...

Faulty

First of all -please excuse the thread's title, but I encountered an issue where I couldn't input content in the "title" box unless I refreshed the page and started typing before it loaded the page fully (tried on both Chrome and Firefox - VERY odd).
Recently I've encountered issues with the phone (N910F) getting really hot and shutting down the phone. I was in The Philippines at the time and the daily temp was around 34 degrees so I thought this may have had something to do with it. One battery in particular, whenever I used the camera it would shut the phone down. I stopped using that battery and then eventually the other 2 have been doing the same - they are all after market batteries bought from Amazon from Anker and Rav power and within a year old. But then it would get worse and the phone would just randomly shut down - it seemed to make no difference if it was at 90% or 30, it would just die. I'd often have to do a battery pull and hold down the power button just to get it to fire back up again. Over the last 2 weeks it's gone form a few times a day, to multiple times an hour! I even tried to limit the load by changing the governor to "powersave" and that initially seemed to help matters.
I figured it could be one of three things going wrong - a software related issue, a hardware issue with the phone or failing batteries. I installed [ROM][N910G/F][ODEX]* DQL1 * Multi-CSC, De-Bloat stock, Fast&Light[CUSTOM] and it was a while till anything happened but then once again - it shut down. So I don't see it being ROM related, I'd only added a couple of basic apps too, so I cant see it being a rogue app.
My last N910F had the EMMC failure and I recall that it would regularly freeze or lag heavily then crash and bootloop, but normally my phone just shuts down. I'm hoping that this means it's most likely battery issues, but it seems strange that all 4 batteries would fail within a 5 month period, especially as they were all on rotation. I even took to only charging them (in a Samsung external charging cradle) on an evening when the temperature was cooler. I've contacted both manufacturers but I know that Anker dont have any replacement batteries anymore, so I'm hoping Rav power will replace that faulty battery (that one started to swell a few days ago.
So, what do you fine fellows think is the likely issue that I'm encountering? I don't want to throw good money after bad and buy more batteries if it's likely that it's a phone issue, but I also don't want to get rid of the phone if I can get it working again.....
(I'd been running the Resurrection Remix Rom on Nougat for about 10 months. I went traveling 8 months ago so I didn't update the ROM as I it wasn't super stable at that point and I was happy how it was working - if it's not broke, dont fix it! But after a while I started to have issues and one of the batteries began to swell. I got rid of that one and switched between the other 3)