Database Users

Some tecnical question on N1

Hi guys,
i've my Nexus from about a week. My battery life is about 24hr but I use phone with Push mail (activesync with TouchDown). I don't know if I can boost battery life with a custom kernel UV.
I want to know if in sleep mode, the Snapdragon is fixed at 1Ghz? Or only with a custom kernel it goes down to 245mhz? Can this give me more battery life?
Thanks!

the phone idles at 245 mhz in all roms, not just modified ones. otherwise the phone would only live for 2 hours, tops, before the battery runs out.
in sleep as in "pc like standby" the cpu turns itself nearly off. from time to time it will wake up (timer based, interrupt) to do something, without turning the screen on. depending on load it will set the cpu clock accordingly. (generally it should be on less then 1% of the time)
you can actualy see this quite nice when you open an ssh session to the phone and switch it "off". every input in the session now takes ages to complete, because the phone aggressivly tries to sleep.

Your biggest power drain is going to be the screen. Try turning your brightness down, or if you haven't already, enable the auto brightness. I found this saved me a lot of power.

[Help] Phone is crazy

Hello, sgy users. I'm experiencing a problem with my sgy. When my battery gets low (about 20-30%) after ~10-15 minutes using, it shuts down and shows empty battery. After that, I plug in my phone and it shows ~5% of battery. Then, I keep the phone plugged-in for ~5 mins, then reboot it and battery gets ~70-90%. I'm using latest EVO-X rom, savie's 73# kernel, brightness is always lower than 50%, CPU settings are: min - 312, max - 832, gov - performance, i/o shed sio.

-BlaZinG^DucK- said:
Hello, sgy users. I'm experiencing a problem with my sgy. When my battery gets low (about 20-30%) after ~10-15 minutes using, it shuts down and shows empty battery. After that, I plug in my phone and it shows ~5% of battery. Then, I keep the phone plugged-in for ~5 mins, then reboot it and battery gets ~70-90%. I'm using latest EVO-X rom, savie's 73# kernel, brightness is always lower than 50%, CPU settings are: min - 312, max - 832, gov - performance, i/o shed sio.
Click to expand...
Click to collapse
The battery has got issues.Go to cwm and wipe your battery status once

-BlaZinG^DucK- said:
Hello, sgy users. I'm experiencing a problem with my sgy. When my battery gets low (about 20-30%) after ~10-15 minutes using, it shuts down and shows empty battery. After that, I plug in my phone and it shows ~5% of battery. Then, I keep the phone plugged-in for ~5 mins, then reboot it and battery gets ~70-90%. I'm using latest EVO-X rom, savie's 73# kernel, brightness is always lower than 50%, CPU settings are: min - 312, max - 832, gov - performance, i/o shed sio.
Click to expand...
Click to collapse
calibrate the battery.
1. completely charge the battery
2. reboot in recovery mode (charger plugged in)
3. cwm, advanced-> wipe battery stats
4. reboot, again let charge full
5. let the battery end completely and do the steps 1-4 two-three times

Already tried wiping battery stats, it didn't help. I'll try calibrating
EDIT: Calibrating didn't help. And my problem got worse. I use my phone at any battery level for 3-5 mins and it shuts down without shutdown animation. When I try to turn it on, it won't boot. Just shows galaxy y letters and shutdowns, doesn't show lockscreen. If I want to turn it on, I have to plug in the charger.

Battery keeps dying at around 30 - 40%. When I go to recharge, it starts at 0?

Does anyone have any idea why this is happening? Started happening randomly about 2 weeks ago on stock 4.3. Switched to PA 3.99 then to CM, still happened. Flashed 4.4 and it died today at about 20%, usually it's around 40%.

Nhialor said:
Does anyone have any idea why this is happening? Started happening randomly about 2 weeks ago on stock 4.3. Switched to PA 3.99 then to CM, still happened. Flashed 4.4 and it died today at about 20%, usually it's around 40%.
Click to expand...
Click to collapse
50 views, not 1 reply?

Nhialor said:
Does anyone have any idea why this is happening? Started happening randomly about 2 weeks ago on stock 4.3. Switched to PA 3.99 then to CM, still happened. Flashed 4.4 and it died today at about 20%, usually it's around 40%.
Click to expand...
Click to collapse
Do you get a blinking red light sometimes when you charge it?
Try this for me. When your battery is at 30% try to take a picture with flash. If your phone shuts off then it might be that your battery is bad. From you have said I think the battery is bad. You will need to replace the battery.
Regards,

Sinoeth said:
Do you get a blinking red light sometimes when you charge it?
Try this for me. When your battery is at 30% try to take a picture with flash. If your phone shuts off then it might be that your battery is bad. From you have said I think the battery is bad. You will need to replace the battery.
Regards,
Click to expand...
Click to collapse
you van try this:
1st: Set both max clock and min clock to 1.5ghz(1512 or something mhz).PS use trickster because sometimes setcpu dosent work or it get reverted.
2nd: use your phone normal, until it reaches 0% of battery(i dont mean 0%,what i mean is the state of it dosent even turning on because of low battery,a.k.a flashing red light).
3rd: hold down both volume rocker buttons for 60 seconds and then plug in the charger(if this is right it will simulate that you have removed the battery, you may wanna check if the combination is right, because my n4 is on rma :/)
4th: after that, recharge your phone for at least 6hours(remember: dont turn on the phone while recharging, let recharge with the phone off)
5th: after phone turned on, get back the min clock and max clock to its original value(usualy max 1512 or something and min 384 or something)
6th: profit(if it worked lol).

nexus 4 weird battery drain!!!

i changed the phones battery i noticed that it is acting weird. i fully charged the phone and this morning i took the charger out and in 30 minutes without touching it it dropped to 95% and from 7 am until 4 am the battery is now at 26% without even touching it. what happens is when i look at it it says that is still 95 but then when i go to settings/battery then it changed to 26 out of nowhere. i tried putting the old battery but still no go.i tried installing a custom rom and kernel and i even tried 4.2.2 stock and 4.3 stock and even changing radio and i looked online for help but same thing happens. i dont know whether is a battery problem or a software or hardware problem. i really need the phone working and i was wondering if someone had the same problem and also if you used to charge the phone with a wireless charging station because i saw something about using it and then not getting enough power from stock charger. i bought it on ebay and the previous owner had a wireless charging if it helps and he told me a new battery would fix the blinking red light of death. any fixes for this? here is the video of the weird battery problem and it is on airplane mode and safe mode. https://www.youtube.com/watch?v=PlFqagJ2v-k here is another video of how slow the device detects the battery drain https://www.youtube.com/watch?v=Blz68xgQcDU

Install the following app:
https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats
You can find a free version that works just as great but I personally like this. Charge to 100% then just use it normally. After it drains, open up the app and see what wakelocks there are. You can Google them and it'll tell you what to disable or uninstall from there
Sent from my Nexus 5 using XDA Premium 4 mobile app

I have a problem like yours... during the night my phone drain 10-15% of the battery in airplane mode... i've tried to install stock rom, clean install of cm11, some kernels, UV and UC... nothing works...
Last night i went to sleep with 93%, after 8 hours i had 93% but after 5-6 seconds it dropped to 81%.... no sync, airplane mode, greenify on all apps...
I've also bought a new battery... nothing to do... it can be can hardware problem?
Thanks

Is anything wrong with my battery?CM11 with ak kernel @ 1944 mhz, intellidemand, eco mode on, Wi-Fi on, GPS on, auto brightness on

VikramW8 said:
Is anything wrong with my battery?CM11 with ak kernel @ 1944 mhz, intellidemand, eco mode on, Wi-Fi on, GPS on, auto brightness on
Click to expand...
Click to collapse
First of all kill that 1.9Ghz OC for gods sake....poor phone

Mashed_Potatoes said:
First of all kill that 1.9Ghz OC for gods sake....poor phone
Click to expand...
Click to collapse
Well the graph has started from when the phone was at 1.2Ghz... The battery life just doesn't get worse.. Its the same with 1.2 and 1.9.. Just some minor differences.. There is less heat and low performance on 1.2 and on 1.9 the phone heats up quite a bit but the performance also increases considerable.. But it doesn't seem to affect battery life..

Vikram: Firstly, its bad manners to hijack someone else's thread. You should start your own if you have a question.
It's hard to say if it affects a battery life, because your graph is over the span of two days. One single charge and discharge cycle is sufficient to demonstrate any issues. In any case, it may be unrelated to your overclocked processor, I would install the wake lock detector app and start from there.

SOLUTION For Battery issue: 70% - 0% Or Any % to 0 and Shutdown..

My Son's Nexus 10 had served its purpose. But Started to die at Random percent, Mostly above 50%.. So Got a new Tablet for him. But Did not want to throw away this Gem of a Tablet.
After weeks of Trial and Error finally found a solution Thanks to input from a Redditor.
Issue/Problem: Dies at Random % showing battery %0 and Shutdown. But In Recovery with Full Brightness it does not Die for hours.. (as later found out.. Recovery does not need much CPU power)
So What did I try:
1. Changed Rom's (All the way from Base Google Images to Oreo) >> Did NOT fix the Problem
2. Clearing battery stats.. etc. ( incl completely discharge and Charge and all those cycles usually we do to calibrate the battery) >> Did NOT Fix the Problem
2. Ordered a New Battery - (Samsung Model From Ebay - I guess it was used or who knows ) >> Did NOT fix the Problem
3. Changed Multiple chargers (Wall Adapters/ Cable from multiple brands which i have at home.. LG, Samsung etc etc) >> Did NOT Fix the Problem
Solution/ What Fixed:
Thanks to redditor.. Who mentioned about CPU power consumption.. And Old Mother board might not be providing enough Power to CPU. (As this tablet is Old.. It was just an Hobby to make it work and Did not want to spend more money on MotherBoard)
By this time I was on Marshmallow Linage OS Rom.. (As Everything works), Gave Root access to one of the CPU app's and Did this..(See Below) Enabled on Boot to keep the same settings.
Setting the CPU max to 1200MHz and Min to 200 it WORKED! I tried every damn thing before. For some reason... this idea did not strike my brain. So its the Power consumption from CPU.
EDIT 1: after some more testing You can go upto MAX 1600MHz (Your mileage may vary)
Finally Battery drained till zero without shutting down.
LET ME KNOW IF THIS FIXED YOUR TABLET TOO.. If you have the same issue as mine. (I Know many had this issue like mine.. but none had solution) Hope this helps.

streetsmart999 said:
My Son's Nexus 10 had served its purpose. But Started to die at Random percent, Mostly above 50%.. So Got a new Tablet for him. But Did not want to throw away this Gem of a Tablet.
After weeks of Trial and Error finally found a solution Thanks to input from a Redditor.
Issue/Problem: Dies at Random % showing battery %0 and Shutdown. But In Recovery with Full Brightness it does not Die for hours.. (as later found out.. Recovery does not need much CPU power)
So What did I try:
1. Changed Rom's (All the way from Base Google Images to Oreo) >> Did NOT fix the Problem
2. Clearing battery stats.. etc. ( incl completely discharge and Charge and all those cycles usually we do to calibrate the battery) >> Did NOT Fix the Problem
2. Ordered a New Battery - (Samsung Model From Ebay - I guess it was used or who knows ) >> Did NOT fix the Problem
3. Changed Multiple chargers (Wall Adapters/ Cable from multiple brands which i have at home.. LG, Samsung etc etc) >> Did NOT Fix the Problem
Solution/ What Fixed:
Thanks to redditor.. Who mentioned about CPU power consumption.. And Old Mother board might not be providing enough Power to CPU. (As this tablet is Old.. It was just an Hobby to make it work and Did not want to spend more money on MotherBoard)
By this time I was on Marshmallow Linage OS Rom.. (As Everything works), Gave Root access to one of the CPU app's and Did this..(See Below) Enabled on Boot to keep the same settings.
Setting the CPU max to 1200MHz and Min to 200 it WORKED! I tried every damn thing before. For some reason... this idea did not strike my brain. So its the Power consumption from CPU.
Finally Battery drained till zero without shutting down.
LET ME KNOW IF THIS FIXED YOUR TABLET TOO.. If you have the same issue as mine. (I Know many had this issue like mine.. but none had solution) Hope this helps.
Click to expand...
Click to collapse
Hi!
I have the same problem for a while. Could you tell me which CPU app did you use?
I thank you very much for your help.
Marco

Kukl said:
Hi!
I have the same problem for a while. Could you tell me which CPU app did you use?
I thank you very much for your help.
Marco
Click to expand...
Click to collapse
I used below app (But u can use any CPU app).. But other than those above setting(s).. I DID NOT change anything else. But u need ROOT to make that change.
Good Luck. hopefully it helps you too.
https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor

streetsmart999 said:
I used below app (But u can use any CPU app).. But other than those above setting(s).. I DID NOT change anything else. But u need ROOT to make that change.
Good Luck. hopefully it helps you too.
https://play.google.com/store/apps/details?id=com.grarak.kerneladiutor
Click to expand...
Click to collapse
I try it immediately, I hope it works!
Thank you very much

Kukl said:
I try it immediately, I hope it works!
Thank you very much
Click to expand...
Click to collapse
Hey You can go MAX upto 1600.. If that doesn't work for u.. Keep reducing a lil by little.

streetsmart999 said:
Hey You can go MAX upto 1600.. If that doesn't work for u.. Keep reducing a lil by little.
Click to expand...
Click to collapse
Unfortunately at the moment I don't solved the problem, even if I set the cpu min to 200 and max to 1200.
I've installed a new ROM, deleted the cache and still the problem persists. I will do other tests trying to recalibrate the battery.

Kukl said:
Unfortunately at the moment I don't solved the problem, even if I set the cpu min to 200 and max to 1200.
I've installed a new ROM, deleted the cache and still the problem persists. I will do other tests trying to recalibrate the battery.
Click to expand...
Click to collapse
Humm... Anyway @1600 mine died at 30% .. So made it 1500 and past below 18% and Still running. So I guess 1500 is max I can go
Also Before coming this conclusion: I did the fowling
Charge 100%
Delete Batterystats.bin
Run this command from adb "adb shell dumpsys batterystats --reset"
And then Changed the CPU max (Please NOTE , Select "On Boot" to keep the same parameters). Once u change the CPU settings .. Reboot and see .. if its keeping the same settings.

Many thanks. I tried all of the the things you tried and setting the cpu max frequency is the only thing that worked.
I could get away with seeing it to 1600.
Deleting batterystats.bin does nothing https://www.xda-developers.com/goog...-battery-stats-does-not-improve-battery-life/
Now with a new battery, PureNexus Rom and your amazing fix my Nexus 10 is a thing of beauty again.

LET ME KNOW IF THIS FIXED YOUR TABLET TOO..
Click to expand...
Click to collapse
Streetmart you absolute legend. I'd never thought I'd see the day my Nexus 10 would drain down to zero again. I tried 1600, then 1500, to no avail; then I said screw it I'll just go down to 1200 (with little hope of it working).
It feels so weird to actually have an internet “solution” work. I'm super happy. I didn't want to buy another tablet. I love this one and it worka perfect for what I use it for.
Thank you! :good::highfive:

OMG! thank you for this thread! i was just posting to look for a replacement for my 10... i hope this fixes it BTW.. what's the normal max cpu speed? I REALLY don't want to replace it as the new dropbox 3 device thing really screws me..

Icetech3 said:
OMG! thank you for this thread! i was just posting to look for a replacement for my 10... i hope this fixes it BTW.. what's the normal max cpu speed? I REALLY don't want to replace it as the new dropbox 3 device thing really screws me..
Click to expand...
Click to collapse
I think the normal is 1700MHz. It's what the program showed before I changed it. All the best! Keep us updated.

Hez0 said:
I think the normal is 1700MHz. It's what the program showed before I changed it. All the best! Keep us updated.
Click to expand...
Click to collapse
What a difference... i installed that a few days ago, and i haven't used my N10 much but on standby it's still at 99% usually it would be WAY lower.. i think that program did more than just lower the max cpu a little.. don't care though. the N10 lives on!!

If you still have this issue, I have been updating the kernel and also found some of the power control settings needed tweaked. Disabling "opportunistic sleep" "logging time spent in suspend" and enabling "advanced power controls" seems to do the trick. had an issue where the device would shut off if battery level reached 20%. Haven't had it happen again yet.

DragonFire1024 said:
If you still have this issue, I have been updating the kernel and also found some of the power control settings needed tweaked. Disabling "opportunistic sleep" "logging time spent in suspend" and enabling "advanced power controls" seems to do the trick. had an issue where the device would shut off if battery level reached 20%. Haven't had it happen again yet.
Click to expand...
Click to collapse
I'm currently running at 1600 with this guy modified kernel and wow, besides no more suddenly shutdowns it runs very smoothly, it reminds me the pre-marshmallow age of this tablet.

DragonFire1024 said:
If you still have this issue, I have been updating the kernel and also found some of the power control settings needed tweaked. Disabling "opportunistic sleep" "logging time spent in suspend" and enabling "advanced power controls" seems to do the trick. had an issue where the device would shut off if battery level reached 20%. Haven't had it happen again yet.
Click to expand...
Click to collapse
Where are you finding these control settings to change?

I have replace the battery of my N10 because of low capacity.
Now it charge from 0% to 52% then it goes to 100%. On discharge it goes from 100% to 46% then shutdown and battery shows 0%. Percentage is the same in TWRP.
Since replacement of battery it have aroud 10 charge/discharge cycles without any changes.
Any solution for that?

Der_Graf said:
I have replace the battery of my N10 because of low capacity.
Now it charge from 0% to 52% then it goes to 100%. On discharge it goes from 100% to 46% then shutdown and battery shows 0%. Percentage is the same in TWRP.
Since replacement of battery it have aroud 10 charge/discharge cycles without any changes.
Any solution for that?
Click to expand...
Click to collapse
I have to agree on, that the N10 chipset/cpu/powersupply has degraded somewhat & as the battery voltage gets lower during discharge, it can not supply stable power any longer :crying:
If i reduce the CPU speed from 1700MHz to 1200MHz I get to go down to 20% instead the N10 shutting down abruptly at just 30%
I do have a spare battery in the fridge for later on. Once I open up the N10, I'll see if there is a capacitor or two, that could replaced in the power supply area to possibly fix the issue.
Note:
1. On second full charge since lowering the CPU to 1200MHz the battery got down to 14% & I have decided to charge it instead of letting it die at some point at a lower percentage
2. I should have mentioned earlier, that I still use the original N10 battery & plan to replace the original battery with a new aftermarket battery later on if I need to.
3. I use the N10 in an air-conditioned room for no longer, than half an hour at a time only browsing & reading articles with a short 10min video from YouTube.
4. Before lowering the CPU clock from 1700MHz to 1200MHz, the tablet consistently has shut down abruptly, at 27-30% battery level to my dismay.
5. Tried complete battery drain / cache reset to 0% in Recovery mode & then fully charging it while shut down 3 times without success.
6. So far lowering the CPU clock has made a difference & for prof now I am evaluating the N10 battery capacity with AccuBattery.
7. I charge my devices at around 20-25% or higher up to 80% to prolong battery life using apk's to stop charging or alert me.
I have switched to the UNOFFICIAL Resurrection Remix for Nexus 10 (ResurrectionRemix-M-v5.7.4-20161208-manta) MM ROM after rooting my N10 (Danke schön Corinna ) & had to update the baked in Kernel Adiutor.
Installing from APKMirror the "Kernel Adiutor (ROOT) 0.9.73 beta (Android 4.0.3+)" has allowed me to lower CPU MAX Frequency and have it stick after BOOT!
com.grarak.kerneladiutor_0.9.73_beta-241_minAPI15(nodpi)_apkmirror.com

Ottoman Mint said:
I have to agree on, that the N10 chipset/cpu/powersupply has degraded somewhat & as the battery voltage gets lower during discharge, it can not supply stable power any longer :crying:
Click to expand...
Click to collapse
I don´t think so. The capacity of new battery looks really good. I use the N10 as wall-mounted control tablet for my home. With activated DT2W, full brightness, showing cams on motion, controlling home and audio over the day, my new battery runs about 28 hours before it stops. With old battery it was around 15-18 hours from full to off. My workaround: Reading battery with tasker and starts charging at 50%
I think the china batterys have different voltages than samsung batterys and N10 can´t work with this.

Der_Graf said:
I don´t think so. The capacity of new battery looks really good. I use the N10 as wall-mounted control tablet for my home. With activated DT2W, full brightness, showing cams on motion, controlling home and audio over the day, my new battery runs about 28 hours before it stops. With old battery it was around 15-18 hours from full to off. My workaround: Reading battery with tasker and starts charging at 50%
I think the china batterys have different voltages than samsung batterys and N10 can´t work with this.
Click to expand...
Click to collapse
Hey,
That sounds very interesting. I may find out about that, when I replace the original N10 battery to my replacement battery from China.
I forgot to mention in my post earlier, that I am still using the original N10 battery. The original N10 battery keeps crashing at 30% unless I lower the CPU clock to 1200MHz.
After the first charge at (1200MHz max CPU) I got the N10 down to 20%+ before crashing to shut down & after the second charge I got it down to 14% at the same 1200MHz without crashing to shut down & just recharged it. Mind you I was just surfing the net & watching YouTube. I am also using AccuBattery to estimate the battery capacity atm. (Oh & don't install Battery Charge Limiter, because it boot-loops the N10 after install!)
DT2W sounds awesome. Which ROM are you using on your N10 to get DT2W, if you don't mind me asking?

Ottoman Mint said:
Hey,
That sounds very interesting. I may find out about that, when I replace the original N10 battery to my replacement battery from China.
I forgot to mention in my post earlier, that I am still using the original N10 battery. The original N10 battery keeps crashing at 30% unless I lower the CPU clock to 1200MHz.
After the first charge at (1200MHz max CPU) I got the N10 down to 20%+ before crashing to shut down & after the second charge I got it down to 14% at the same 1200MHz without crashing to shut down & just recharged it. Mind you I was just surfing the net & watching YouTube. I am also using AccuBattery to estimate the battery capacity atm. (Oh & don't install Battery Charge Limiter, because it boot-loops the N10 after install!)
DT2W sounds awesome. Which ROM are you using on your N10 to get DT2W, if you don't mind me asking?
Click to expand...
Click to collapse
Sometimes it shuts down at 20% and other times it won't. I'm almost pretty sure it doesn't have anything to do with advanced power settings or any kind of internal power settings with the kernel. There are no thermal configurations on this device and they don't add any drivers for it or support for it until much later versions. Heat seems to play a role especially down here Florida when outside. So far in my experience it's most likely to shut down at 20% if it's too hot and not likely to do so if it's been idle for a bit or not plugged in.
Sent from my Samsung Nexus 10 using XDA Labs