High kernel CPU usage on lc2 - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

Hey guys I just flashed the lc2 image using mobile Odin its a huge speed improvement. However I have noticed by watching badass battery monitor that my kernel usage accounts for about 24% of my CPU usage. I am running the lc2 kernel and pretty much stock other then the root that I carried over from my kl3 flash. Has anyone else been experiencing similar problems or can point us in the right direction.
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i used lc2 for half a day and notice my note get warmer and more battery drain. With lc1 its amazing, i can go 2 days without charging. its also very fast and smooth too. im thinking about trying lc2 again ive heard its better for games, and fast wakeup from sleep. But i dont think i can give up the great battery life that lc1 have just for a little more speed of lc2.

I'm running lc1 cassie rom with Franco kernel.. And kernel use is 50%?! Battery life seems good though, so I'm not sure if total usage is low and the kernel is just taking the majority.
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Same here, running stock (but rooted) LC2, I have the impression that the system is running hotter than LC1 when playing games, and that battery life is less good.
But this is just an impression, I haven't actually measured the data to compare, so maybe the placebo effect could be in cause...?
I'm going back to LC1.

I just flashed lc1 over lc2 ill see how it goes after some actual usage but initially from what I can tell the kernel is back to what it was before hopefully my battery life will be positively impacted.
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Which is this application?

dr.ketan said:
Which is this application?
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Badass Battery Monitor.

Related

Anyone else's battery life go south after rooting and updating to LA4? Why?

The first 2 weeks of using my note XEU KKA version, the battery life was ho hum, OK but not great. Then all of a sudden it doubled - consistent, really good!
I rooted and flashed LA4. The process worked fine. But now my battery literally sucks really bad - as in immediately after rooting and flashing you can watch it go down down down. Any ideas why?
lightfire said:
The first 2 weeks of using my note XEU KKA version, the battery life was ho hum, OK but not great. Then all of a sudden it doubled - consistent, really good!
I rooted and flashed LA4. The process worked fine. But now my battery literally sucks really bad - as in immediately after rooting and flashing you can watch it go down down down. Any ideas why?
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what kernel are u using... theres a kernel battery comparison thread.. am posting from a mobile so will be diificult to post the address... by the way my note's battery also sucks acter flashing it with abyss kernek and rocket rom ..both latest versions.. can see constant drips while using inyernet or playing games... n 85 per battery is consumed by display as can be seen in battery stts
Try resetting the Battery Stats via cwm. I'm on XXLA4 and Abyssnote its fine for now, but i need to test more.
Sudden battery drain is usually due to:
1. Kernel issues. We all have the same device, and one would expect that all our Notes behave the same way with a specific kernel, but the fact is they don't. Don't ask me why, electronic gods have some funny ways and quirks. So, try using different kernels, and see how they affect your battery life. Flashing them is a piece of cake, just read the instructions carefully.
2. Rogue apps. Stock ROMs are full of crapware that like to reside in the memory and suck up your juice. Try searching XDA Note forums for the list of removable system apps and get rid of those you don't need. That is easily done by using Root Uninstaller or Titanium Backup.
Hope this helps.
I am using dolphin browser battery saver apk. it is very usefull. Especially it is turn off wifi under sleep mode and saving battery.
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[Q] Best Kernel for long battery?

The battery life on my stock ICS LP9 is horrible. I was thinking of rooting it and installing some custom Kernel to improve battery life. Can anyone suggest which kernel is best for battery?
J_Kirk said:
The battery life on my stock ICS LP9 is horrible. I was thinking of rooting it and installing some custom Kernel to improve battery life. Can anyone suggest which kernel is best for battery?
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For better battery and stability use SpeedMod 3-3.
kernel and modem combination.
speedmod k3-3 and lb2 modem works fine for me.
This kernel works on Rocket Room V7??
Do you have to root the phone first?
Before applying Speedmod 3.3?
thanks
Boy124 said:
For better battery and stability use SpeedMod 3-3.
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Does speedmod 3-3 compatible with stock? Thank u.
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???
mine is the same ques.. can some body please post some link or how to guide to change my kernal and which one is the best for battery life...
thanks
andreborg75 said:
This kernel works on Rocket Room V7??
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Yes it works very good on RR v7 tried flashing franco kernel v6 but that gives random reboots v5 eats lot of battery,(i guess due to overclock) so I flashed this kernel so far its going very good.
Notecore and speedmod kernels are the best with both performance and long battery life
rajsekhar.300 said:
Notecore and speedmod kernels are the best with both performance and long battery life
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Which is best for battery life?
tw15tr said:
Which is best for battery life?
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Click to collapse
notecore is stable and give a day long battery and gives you custom bootanimation+15 toggle+call recording and much more.it is double check for emmc brick.
speedmod is superstable and give a good battery life and gives you custom bootanimation+15 toggle+call recording and kills useless things.
NOTE-1. Dont use oc as it will heat up your device,better to go for std.
2. downgrade to pre-rroted gb rom,dont take a risk although they are safe to wipe,but still first downgrade.
Both the kernels give you better battery life
But for me its Notecore
Hello,
I made a lot of tests.
today, here is my config :
samsung ICS DDLPA. rooted, with kernel SpeedMod K3-11.
with stock kernel, I had good battery life.
with SpedMod kernel, I have better battery life.... when Note is sleeping.
I also had installed Lightning launcher. is better or not ? difficult to tell the difference it is slitghly the same.
to be honest, when I read a movie, listen music, go on internet, it use a lot of battery... which seem to be normal.
today, with medium use, I can have 3 days of battery.
with more use of the note, I have 2 days of battery.
Medium use is : no video, New republic (RSS reader) for around 1 hour, several SMS, some phone call, Internet (around 30 minute), one or 2 time google play, 1 hour reading an ebook in the night (black background, white text)
more use : Add Music, more internet, time spend in tweak the parameter of my launcher.
without SpeeMod kernel, I could lose around 15% to 20% of time listed above. no much.
I hope it helps.
Olivier
The latest speedmod is the best kernel for the battery...
I just tried speedmod and while listening to music via bluetooth and playing solitaire, my battery drains 4% per 10 min.
It's this normal?
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bluetooth drains like crazy, as well as playing games, so yeah. Youre better of using normal wire headset.
4% per ten minutes is 24% per hour, so approx 4 hours screen on time is actually pretty good, very good even. Cant believe that with bluetooth on.
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Speed mode 3-13, best for battery.... But notecore is smoother....
baz77 said:
bluetooth drains like crazy, as well as playing games, so yeah. Youre better of using normal wire headset.
4% per ten minutes is 24% per hour, so approx 4 hours screen on time is actually pretty good, very good even. Cant believe that with bluetooth on.
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Thanks for the tip, I'll switch to wired headphones and see how that goes
Not sure if it had made a difference, but I did removed alot of the stock samsung apps such as samsung app store, samsung push service etc and also changed the modem to XXLRI, which I find is better than XXLRK.
tw15tr said:
I just tried speedmod and while listening to music via bluetooth and playing solitaire, my battery drains 4% per 10 min.
It's this normal?
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Omg... try to finish the battery , leave it off on charge and in the morning when the charge is complete, go in recovery and do a wipe battery stats.
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w0nderwall95 said:
Omg... try to finish the battery , leave it off on charge and in the morning when the charge is complete, go in recovery and do a wipe battery stats.
Inviato dal mio GT-N7000 con Tapatalk 2
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Thanks I'll give that a go.
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Best rom for Battery?

Hey guys. I only want to ask which rom do you think is the bettest for battery life.
Thanks.
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My suggestion would be stock gingerbread with speedmod kernel k2-12, i used to get around 4 days with normal use.
That sounds nice. Do you have heavy use of yout phone? Or only deep sleep all the time?
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I use it for playing games, little music, calls and messaging. Sometimes connect to Wi-fi. With the same in ICS i get around 2 days.
okay thank you i´ll try. :fingers-crossed:
to set expectations straight, expect thought about 4.5 hours nonstop usage on gb with speedmod kernel.
4 hours on ics with speedmod
alk stock dont expect more then 3 to 3.5 hours.
you only get 2 days if you dont synch, barely use phone and are in good reception area with data switched off always.
Note general tips which can be found in the 10000plus threads about battery drain and how to analyse deepsleep issues
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baz77 said:
to set expectations straight, expect thought about 4.5 hours nonstop usage on gb with speedmod kernel.
4 hours on ics with speedmod
alk stock dont expect more then 3 to 3.5 hours.
you only get 2 days if you dont synch, barely use phone and are in good reception area with data switched off always.
Note general tips which can be found in the 10000plus threads about battery drain and how to analyse deepsleep issues
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Agreed. I don't connect to data. And don't sync also. :angel:
Suggestion( i hope )
robotnikz said:
Hey guys. I only want to ask which rom do you think is the bettest for battery life.
Thanks.
Sent from my GT-N7000 using xda premium[/QUOT
I don't know whether you like gingerbread roms or not , but till date the rom with which I got maximum battery backup with modeate to heavy usage was CheckRom Revo HD V6. This rom never lags , best battery life , and good speed .
If you are Gingerbread hater and ICS lover , then you can try Rocketrom v7( very good battery life with the included kernel , and would be much better with Speedmod Kernel (latest version) ). And then you have CleaNote V2.30 ( V3.0 has bluetooth glitches but its faster , if you are bluetooth user i would suggest you to stick with V2.30 ) , I personally love CleaNote because it has stock look and very fluidic :good: and as the tagline says 'You dont want any theme forced down to your throat '. KingDroid are good at speed but many have reported few glitches with it , you may try it if you like ( I dont like KingDroid , its sth personal ). If you hate Samsung's bloatware then we have Cassie's XtraLite rom for your rescue :cyclops:. Its a good rom too .
Well finally to end , I use cyanogenmod 9 and i update it everyday and with each update it gets more fluid and responsive, fast , smooth . i just love cyanogenmod9 ( waiting for cm10 ).
ParanoidAndroid are for ppl who love fun , who want to showoff their phone , the ability of their phone , the sweet hybrid interface of their phone , its for geeks :-0 .
Make a choice or try all of them :good::good:
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I think if u get deep sleep all time, battery long life every rom
With crash v6 and notecore 3.1 i have 4hours screen on and 15% battery left
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robotnikz said:
Hey guys. I only want to ask which rom do you think is the bettest for battery life.
Thanks.
Sent from my GT-N7000 using xda premium
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I am using CLASSIC V1+15 toggle with MOD V1 which is ICS 4.0.4, and I also updated kernel to chainfire LRG, which is more stable and smooth, battery life is excellent comparatively to all other ROMs so far.
Which is around 4% drain per hour, I have (facebook, wechat, LINE, mitalk, whatsapp, email, exchange service, maps, mixed chinese input, make your own clock) running and leaving it on idle.
Tony.
Link: http://forum.xda-developers.com/showthread.php?t=1765307
For the past 2 years of beeing a S galaxy user, I've quite looked for best battery life at top performance. Most of the time, battery life is no longer measured in "days" of usage , like we used to do with our Nokia phones. Nowadays, you ten to look at display (screen on) time , CPU profiles, and also connectivity patterns.
You can think of battery life as a factor of the above mentioned, however I think that display time is the most important parameter related to battery life. CPU profiles, connectivity, tend to work only when you have your screen on, and from my experience, you tend not to extend your usage time by more than 10-20%.
So as a conclusion, I did not expect a specific rom / kernel configuration to offer more "screen on" time but to offer a more faster way to do my tasks therefore I did more tasks in almost the same display time.
At the end of the day, it is more important how you USE your device rather than finding a "magical" combination that will increase your battery life.
KID + SpeedMod
+1 for GB (i was using checkrom but i'm sure any gb rom will give similar effects) with Speedmod.
If you make setcpu to 200mhz on screen off, i find it uses almost no power at all when it's on standby.
Like it was on 77% when i went to bed.
Woke up in the morning and it was on 78% (i was like lolwut).
Yay for setcpu.
But seriously though, any GB rom will give you considerably more battery life than any ics rom.
ROM
The best ROM for a battery-HALF ILLUSION and placed on the scale smartas governor.
Try and tell me your impressions.
the best rom for battery
robotnikz said:
Hey guys. I only want to ask which rom do you think is the bettest for battery life.
Thanks.
Sent from my GT-N7000 using xda premium
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Click to collapse
the best rom for battery is Criskelo's ICS V9
I bet this is the best custom rom on battery savings, try it you will not regret it. http://forum.xda-developers.com/showthread.php?t=1722038

rocket rom v10 battery usage

Hi all Im using rocket rom v10 but battery uses 1% per minute. I have read posts on the rom thread but cant post there yet. Using Betterbattery I have Surfaceflinger using lots..... after 10minutes screen now 85% battery 83%.
magpie1832 said:
Hi all Im using rocket rom v10 but battery uses 1% per minute. I have read posts on the rom thread but cant post there yet. Using Betterbattery I have Surfaceflinger using lots..... after 10minutes screen now 85% battery 83%.
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Yeah I have the same issues, many of us do, dunno from where that is, kernel or rom or android 4.0.4 or the lrk base??? , deep sleep is perfectly fine, but once screen is on, it's ridiculously high..
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Flash the SpeedMod kernel and see if this improves things for you.
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I have same exact problem guys i tested speedmod both std and oc version and speed mod too and nothing much change but speed mod drain too fast
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Alternatively you could take the overclocked NoteCore kernel and underclock it.
The kernel is undervolted, so disabling higher processor frequencies will give you the benefits of undervolting and the benefits of underclocking.
I.e. low power consumption and low temperature.
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Goodm7sn said:
Yeah I have the same issues, many of us do, dunno from where that is, kernel or rom or android 4.0.4 or the lrk base??? , deep sleep is perfectly fine, but once screen is on, it's ridiculously high..
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Its not a 4.0.4 LRK issue. I was running a rooted stock build and installed NoteCore kernel without any issues. When I flashed Rocket V10 it was only then that the battery life became crippling. Shame, I love Rocket and the tweaks but guess I'll go back to stock!
FabreFaction said:
Alternatively you could take the overclocked NoteCore kernel and underclock it.
The kernel is undervolted, so disabling higher processor frequencies will give you the benefits of undervolting and the benefits of underclocking.
I.e. low power consumption and low temperature.
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Could u help how much underclock and undervolt....
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Take a look at the NoteCore thread in the development section for the undervolt details.
The overclocked kernel is undervolted.
Install the overclocked kernel then use something like Tegrak to limit the processor frequency to 1400 or 1200 then you will get the reduced battery drain of using lower voltages and lower frequencies on your processor.
Don't change the undervolting set in the overclocked kernel add this had been optimised.
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I don't think it's the kernel's fault for the battery drain.. I think it's the modem..
I have been using notecore with all the touchwiz roms no battery problems at all
RR 10 with NoteCore 13
Just installed NoteCore 13 8hr ago, and plug the power cable for charging. Still plugged now, but the SpyCPU report shows that during the past 8hr, the phone didn't go into deep sleep (while I was ) , but it stays at 100Hz.
Will unplug now and go to work for a day. See if I can get a usage report after work.
Cheers
Yep, definitely faced the same problem, which was the reason I switched to Classic Rom V4 (because of the newest firmware) but actually, though battery life is better, it is still worse than with AlBA v4...I haven't been able to determine whats behind it...
fongwaiyan said:
Just installed NoteCore 13 8hr ago, and plug the power cable for charging. Still plugged now, but the SpyCPU report shows that during the past 8hr, the phone didn't go into deep sleep (while I was ) , but it stays at 100Hz.
Will unplug now and go to work for a day. See if I can get a usage report after work.
Cheers
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After a normal day usage... The battery drain is still heavy... When screen on, the percentage dropped around 1% per a min or two.
Dunno why... Deep sleep state is ok.
fongwaiyan said:
After a normal day usage... The battery drain is still heavy... When screen on, the percentage dropped around 1% per a min or two.
Dunno why... Deep sleep state is ok.
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Click to collapse
2nd of RR10 with NoteCore 13. The screen-on drainage improved. I read my whole travel time (around 1.5hr) on newspaper via 3G signal, and the battery went from 100% to 81-82%, which is acceptable for me.
Again, Deep sleep works perfectly.
I left this good rom because of this, deep sleep ok, but when the screen is on, too heavy battery drain. same with 2 kernels, should be another reason.
saturax555 said:
I left this good rom because of this, deep sleep ok, but when the screen is on, too heavy battery drain. same with 2 kernels, should be another reason.
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Which kernels u used? And now u using another rom? Which one? Battery with screen on is better?
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phomem termin
Goodm7sn said:
Which kernels u used? And now u using another rom? Which one? Battery with screen on is better?
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I tried with notecore and speedmod. I have used RR10 about 3 days to have several battery cycles. but I felt a big battery drain when using the note, even at low brightness, with nothing strange in CPUspy or BetterBatteryStats.
so I switched to JB liquid. Yesterday night. I would not say it is better for the moment to be honest. New rom, new kernel, not even a beta, so hard to compare, but you are right I feel the same today: high drain with screen on.
(but whatever the battery drain, with palm rejection available on CM9/10, I will switch again to a sammy rom)
I really cant seem to find a way to lower the screen on battery drain , its ,horrible ,
been on latest std notecore and speedmod , and with both i cant seem to get more than 2:00 - 2:30 hours of screen on time & basic use (in total of 10 - 12 hours ) , deep sleep is perfectly fine with 1% loss per hour (sometimes even less !!) , but with the screen on , battery just goes bursting -1% per minute........
we do need our devices to be used , not rested on deepsleep the whole time , otherwise this defies the whole concept of a "smartphone"....
on GB it was very good ,it got worse when Samsung introduced ICS (but was manageable) , but now on 4.0.4 , its just horrible and unacceptable!!! dunno what kind of testing Samsung does before rolling out an update...
sorry for the whole rant and rage post in there , had to speak it out cos im struggling here..
would be highly appreciated if someone can help or a suggest a 4.0.4 rom with a "reasonable" screen on drain... im even considering going back to RRv7 (4.0.3) cos as far as i remember i was getting good battery out of it (deep sleeping and screen on was great there)
cheers.
My batery drain is too much in this rom any sugest
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Speedmod is better than Notecore for battery usage.....Imho......I tested booths with various Rom.....
Hope this help....
Inviato dal mio GT-N7000 con Tapatalk 2

Please help massive battery draining

can someone help me. im currently running KingDroid Rom V5.0 on my SGN for almost 2 months now.Dont have any problem encountered...but i noticed a massive battery drain recently...
currently using kernel hardcore speedmod 3-9
do i need to change something kernel or modem?
im not planning to update to latest version of kingdroid since it seems it has so many issues...
Kalkonest said:
can someone help me. im currently running KingDroid Rom V5.0 on my SGN for almost 2 months now.Dont have any problem encountered...but i noticed a massive battery drain recently...
currently using kernel hardcore speedmod 3-9
do i need to change something kernel or modem?
im not planning to update to latest version of kingdroid since it seems it has so many issues...
Click to expand...
Click to collapse
Try take out your battery for one min. and put it back again.
If not take out/put back battery helps, then download "battery calibration" app from Play Store, fully charge your phone, and run the app.
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Hi,
If you still facing the issue, try to see what is eating up your battery. Best way to analyse the situation is by installing an app called 'Better battery stats'. Its by a XDA member and if i'm not mistaken he offers it on XDA as free download. Try to see what is causing partial wakelocks and kernel wakelocks (your phone should be on deep sleep mode for the majority of time). Try to see what MHz is your processor running at (it shouldnt be in the 1400 range for too long unless you are playing some heavy duty games)
Also try to search for threads on 'wakelocks' on XDA to get more details on this subject.
I have experienced close to 10% drop in 1.5 hr in stock ROMs and around 15% in five hours on CleanNote ROM in idle states with lots of background apps disabled.

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