Q. Kernel battery life. - Nexus S Q&A, Help & Troubleshooting

So I've compared stock roms with stock kernel and netarchy and ogs and I'm getting much worse battery life with the cooked kernels. The phone runs hotter too. I don't overclock or anything, just want to use them to fix the colors. am I doing something wrong or is there a solution? Stock kernel gives great battery life on 2.3.4.
Sent from my Nexus S using XDA App

What do you mean to fix colors?
Anyway I used many cooked kernels with the Evo and each had it's drawbacks - many had worse Battery life than stock, and many were unstable. In my experience, stock worked best. ( I am talking about real world usage here, not test scores.)

ronnienyc said:
What do you mean to fix colors?
Anyway I used many cooked kernels with the Evo and each had it's drawbacks - many had worse Battery life than stock, and many were unstable. In my experience, stock worked best. ( I am talking about real world usage here, not test scores.)
Click to expand...
Click to collapse
Stock colors became washed out after release of 2.3.3 update. Voodoo control with a compatible kernel lets you adjust the colors. I hear people say they get even better battery life after flashing one of the other kernels but I don't know how they're getting that.
Sent from my Nexus S using XDA App

Related

Better battery life, a De-Sensed ROM or AOSP?

Can't stand Sense, but seems like AOSP ROMs have its fair issues with the Thunderbolt.. Has anyone tried both? If so, which had the better battery life?
wade_county said:
Can't stand Sense, but seems like AOSP ROMs have its fair issues with the Thunderbolt.. Has anyone tried both? If so, which had the better battery life?
Click to expand...
Click to collapse
I'm on the extended battery but I get at minimum 18 hours with 4G always on and everything constantly syncing.
Sense FTW
Sent from my Synergized Thunderbolt via XDA Premium App
I get pretty good battery life on CM7 with the stock battery but if I use my 2750 mAh extended battery I get amazing battery life!
AOSP FTW
CanesDrew said:
I'm on the extended battery but I get at minimum 18 hours with 4G always on and everything constantly syncing.
Sense FTW
Sent from my Synergized Thunderbolt via XDA Premium App
Click to expand...
Click to collapse
Mustang302LX said:
I get pretty good battery life on CM7 with the stock battery but if I use my 2750 mAh extended battery I get amazing battery life!
AOSP FTW
Click to expand...
Click to collapse
I like AOSP, but I'm just wondering if a stripped out/unbloated De-Sensed ROM has better battery life and less bugs than a AOSP one. Btw, I have a stock battery.. + 2 spares.
I got WAY better battery life with a de-sensed rom over AOSP. No matter what kernel/rom combination I try nothing has come close to sense or sense based roms.
AOSP roms are not perfect yet as far as the RIL, but way too much useful stuff on certain ones to go back to sense for me. Battery life is probably 12-16 hours on average for me on CM7 RC 1.6. If it lasts that long, it's good enough for me.
I think it comes down to personal preference. I didn't see a big enough difference to stay with one over the other for battery life. I'm sure it's different for everyone based on kernel settings, oc or not, number of things active in background, level of use etc.
Sent from my ADR6400L using Tapatalk
Jaxwindle said:
I think it comes down to personal preference. I didn't see a big enough difference to stay with one over the other for battery life. I'm sure it's different for everyone based on kernel settings, oc or not, number of things active in background, level of use etc.
Sent from my ADR6400L using Tapatalk
Click to expand...
Click to collapse
I agree. Both are pretty stable now assuming you install them right and don't mess them up. Differences in battery are as you said, usage overall and what you installed after the rom. I'd say at this point in the life of both sense and the AOSP based roms. Much of how good a ROM is, depends on how knowledgeable a user is in using it to its potential, just like with any electronic device.
brandnewsimmy said:
I got WAY better battery life with a de-sensed rom over AOSP. No matter what kernel/rom combination I try nothing has come close to sense or sense based roms.
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Click to collapse
agree with this.
I dont notice ANY substantial difference between AOSP or Sense.
I've tried the following TB roms:
Das Bamf Remix 1.8.6 (and others in that series)
CM7
Various Synergy Builds
Gingeritis (current ROM)
I'm a heavy data/phone/txt user. I only have the standard battery. I get through 1 day on a full charge with any of the roms above, and no more then that.
rajuabju said:
I dont notice ANY substantial difference between AOSP or Sense.
I've tried the following TB roms:
Das Bamf Remix 1.8.6 (and others in that series)
CM7
Various Synergy Builds
Gingeritis (current ROM)
I'm a heavy data/phone/txt user. I only have the standard battery. I get through 1 day on a full charge with any of the roms above, and no more then that.
Click to expand...
Click to collapse
+1 that and I have tried:
Das Bamf 1.6, 1.8, 2.x
Liquid
Theory (at least two in the series)
CM7
Gingeritus
Gingeritus GTX &
Telsa Coil.
Just installed NonS3ns3 and its fast as eff. Now looking for a low voltage kernel, is there a preferred kernel?
By asking which is better you've now got all these "fanboys" from each side swearing that their side is the best. Well, honestly, both can be great on battery. The ROM doesn't play as big a role in battery life as you think. It's moreso the kernal & the radio.
I find on either side the MR2.5 & MR 3.5 radios do well. AOSP side the leankernal is great and on de-sensed the dreamkernal is great.
voxigenboy said:
By asking which is better you've now got all these "fanboys" from each side swearing that their side is the best. Well, honestly, both can be great on battery. The ROM doesn't play as big a role in battery life as you think. It's moreso the kernal & the radio.
I find on either side the MR2.5 & MR 3.5 radios do well. AOSP side the leankernal is great and on de-sensed the dreamkernal is great.
Click to expand...
Click to collapse
Thanks for the info. Trust me, I get the major reason for battery life is always a kernel and underclocking. I had the OG Droid and I modded it like crazy, the only reason why I started this post was because if Sense takes so much space and RAM I wanted one that was minimal. I'd take AOSP, but I searched a ton and it has its issues on the Thunderbolt unfortunately.
wade_county said:
Just installed NonS3ns3 and its fast as eff. Now looking for a low voltage kernel, is there a preferred kernel?
Click to expand...
Click to collapse
there are no kernels for nonsense or cleantheory yet.

need advice about the current roms

Ok, ive been doing some research and it looks like eagals blood is prob the rom for me. I was wondering if i could get some advice on this, i am currently unrooted so im stock , this phone is killing me when it comes to battery life, the stability is so so, but my real problem is battery life i charge my fone about 3 times a day. I am a crazy heavy user, fb, texting about 200-400 message a day, phone calls every now and then, games (words with friends), and just random internet stuff. so my phone is like my life! My friend has a samsung captivate and he can go 12-14 of heavy usage prob not as much as me but he doesnt have it charging all the time like me. I was wondering what rom i should use to achieve great battery life and not lose out on stabilty or speed, look doesnt matter bc i use UTO kitchen.
Are you looking for an Android 2.3.3 or 2.3.5 ROM?
Sent from my LG-P999 using xda premium
Hey man if you want a 2.3.3 rom that is stock the best is Xboarders stock tweeked rom it is super stable and everything works and the battery life is great. I use that ROM myself when I am in a stock mood. You hit it on the head with eaglesblood it is the best rom out there. I use the 1.08 verion it is based off GB 2.3.5 it is a mix a cm7 and EB goodness. The battery life is also excellent on it but you will not have A2DP (thats BT stero music) And you cant flash the stock froyo LG camera and there are APN issues that A hard reboot fixes every time. All of the problems I just mentioned are not specific to EB they are however specific to GB 2.3.5 for the g2x. It has something to do with Nivdia not relesing something drivers or sorce I dont know what exactly but thats why. You have to make a choice. I hope this helps you. Oh I alklmost forgot I am a heavy user like you except not text mssgs or phone calls but net data data data I had to change my plan to the 10 gig plan 5 was not enough. So what I did was I got the extended battery for the O2x it fits perfdectly and it was only $30. Before that I had 2 stock batterys with an external charger that worked ok too but I hated changing the battery half way through the day you should look into that. Good luck man.
Charlie
mojorisin7178 said:
Hey man if you want a 2.3.3 rom that is stock the best is Xboarders stock tweeked rom it is super stable and everything works and the battery life is great. I use that ROM myself when I am in a stock mood. You hit it on the head with eaglesblood it is the best rom out there. I use the 1.08 verion it is based off GB 2.3.5 it is a mix a cm7 and EB goodness. The battery life is also excellent on it but you will not have A2DP (thats BT stero music) And you cant flash the stock froyo LG camera and there are APN issues that A hard reboot fixes every time. All of the problems I just mentioned are not specific to EB they are however specific to GB 2.3.5 for the g2x. It has something to do with Nivdia not relesing something drivers or sorce I dont know what exactly but thats why. You have to make a choice. I hope this helps you. Oh I alklmost forgot I am a heavy user like you except not text mssgs or phone calls but net data data data I had to change my plan to the 10 gig plan 5 was not enough. So what I did was I got the extended battery for the O2x it fits perfdectly and it was only $30. Before that I had 2 stock batterys with an external charger that worked ok too but I hated changing the battery half way through the day you should look into that. Good luck man.
Charlie
Click to expand...
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i dont mind i want something stable, fast and great battery life...what does A2DP mean...im going to try EB 1.07 bc i hear no1 has problems with that...
A2DP is Stereo Bluetooth Audio... That's only important if you listen to music using a Stereo Bluetooth Headset.
For battery life, I'd recommend a CM7 based ROM, with either a stock, or undervolted kernel, such as faux123.
FatalityBoyZahy said:
A2DP is Stereo Bluetooth Audio... That's only important if you listen to music using a Stereo Bluetooth Headset.
For battery life, I'd recommend a CM7 based ROM, with either a stock, or undervolted kernel, such as faux123.
Click to expand...
Click to collapse
When u undervolte does it slow does ur phones speed?
Sent from my LG-P999 using XDA Premium App
I agree with FatalityBoyZahy,
I did see a battery life increase after installing CM7, but the most dramatic change in battery life came after installing faux's 0.4.1 undervolted kernel.
And no the speed and stability don't drop, at least not with faux's kernel.
I would imagine that a 2.3.3 stock GB based rom such as Xboarder's tweaked or EB 2.3.3 plus faux's stock GB kernel would produce the best battery life, as I remember experiencing a huge jump in battery life from CM7 to stock GB.
However, I feel like besides the great battery life, the stock GB roms are ****ty compared to CM7 in terms off features and stability.
For example you can't do Netflix or gtalk video on stock GB.
Also I didn't experience this, but some users experience reboots and other such nonsense on stock GB.
So in Summary:
- stock 2.3.3 based rom (EB 2.3.3 is your best bet here in my opinion) + faux kernel = best battery life
- cm7 based rom (EB 2.3.5 or latest CM7 nightly) + faux kernel = best choice for both great battery life and better stability/features
Hope this helps!
Weapon. Its so smooth and I get 3 days with medium usage
Sent from my LG-P999 using xda premium
mightymike889 said:
Ok, ive been doing some research and it looks like eagals blood is prob the rom for me. I was wondering if i could get some advice on this, i am currently unrooted so im stock , this phone is killing me when it comes to battery life, the stability is so so, but my real problem is battery life i charge my fone about 3 times a day. I am a crazy heavy user, fb, texting about 200-400 message a day, phone calls every now and then, games (words with friends), and just random internet stuff. so my phone is like my life! My friend has a samsung captivate and he can go 12-14 of heavy usage prob not as much as me but he doesnt have it charging all the time like me. I was wondering what rom i should use to achieve great battery life and not lose out on stabilty or speed, look doesnt matter bc i use UTO kitchen.
Click to expand...
Click to collapse
triggers rom works amasing for me eaglesblood didn't realy play well with my phone been running his since i have great batt life
Running weapon currently.
wendellc said:
There is only a handful of roms for the g2x . Some of them are no longer being supported by the devs as they have moved on to other devices it seems. just give them all a try.
Sent from my LG-P999 using xda premium
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Click to collapse
Sent from my LG-P999 using xda premium
thanasisc4 said:
I agree with FatalityBoyZahy,
I did see a battery life increase after installing CM7, but the most dramatic change in battery life came after installing faux's 0.4.1 undervolted kernel.
And no the speed and stability don't drop, at least not with faux's kernel.
I would imagine that a 2.3.3 stock GB based rom such as Xboarder's tweaked or EB 2.3.3 plus faux's stock GB kernel would produce the best battery life, as I remember experiencing a huge jump in battery life from CM7 to stock GB.
However, I feel like besides the great battery life, the stock GB roms are ****ty compared to CM7 in terms off features and stability.
For example you can't do Netflix or gtalk video on stock GB.
Also I didn't experience this, but some users experience reboots and other such nonsense on stock GB.
So in Summary:
- stock 2.3.3 based rom (EB 2.3.3 is your best bet here in my opinion) + faux kernel = best battery life
- cm7 based rom (EB 2.3.5 or latest CM7 nightly) + faux kernel = best choice for both great battery life and better stability/features
Hope this helps!
Click to expand...
Click to collapse
ima throw on the faux kernel tried looking for it but not seeing the thread does any1 have it...Q how do you get netflix on here using EB 2.3.3...it didnt come with it....i might just switch to CM7 in a week or 2 i wanna try this out...and does CM7 have netflix for the G2x?
mightymike889 said:
When u undervolte does it slow does ur phones speed?
Sent from my LG-P999 using XDA Premium App
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Click to collapse
No. The only risk is that you might run into stability issues, but using morfic's UV11 it isn't an issue.
Undervolt, use SetCPU profiles, keep wifi/gps off when you're not using them, and keep your display brightness low. That will net you the best battery life.
Sent from my Nexus Prime using XDA Ultimate App
I believe the faux kernel is here: [Kernel]CM7 [2.6.32.45] (v0.4.1) OC~1.55GHz/UV/SLQB/BFQ/EXT4/Voodoo [Aug-27]
Looks like the CM version of the kernel is preferred by some in that thread (has to do with the battery driver).
Question: In terms of flashing the kernel, should I flash the ROM first and then the kernel? Or the other way around? (Or does it not matter?)
Question: In terms of flashing the kernel, should I flash the ROM first and then the kernel? Or the other way around? (Or does it not matter?)
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Click to collapse
Always ROM then kernel.
And I prefer the CM version of faux's kernel as well. Supposedly the DS version has better battery life but I've never been able to notice because I'm always busy pulling my hair out over the jumpy and wildly inaccurate readings.
thanasisc4 said:
Always ROM then kernel.
And I prefer the CM version of faux's kernel as well. Supposedly the DS version has better battery life but I've never been able to notice because I'm always busy pulling my hair out over the jumpy and wildly inaccurate readings.
Click to expand...
Click to collapse
Thanks for the info! Didn't want to screw something up by going in the wrong order.
zevvez said:
I believe the faux kernel is here: [Kernel]CM7 [2.6.32.45] (v0.4.1) OC~1.55GHz/UV/SLQB/BFQ/EXT4/Voodoo [Aug-27]
Looks like the CM version of the kernel is preferred by some in that thread (has to do with the battery driver).
Question: In terms of flashing the kernel, should I flash the ROM first and then the kernel? Or the other way around? (Or does it not matter?)
Click to expand...
Click to collapse
Thanks!
So which 1 do I get there's like 5 download links...
Sent from my LG-P999 using XDA Premium App
eagleblood is the best, do 1.8, its way better

[Q] Battery efficient rom+kernel?

hi
sorry for being such a nooby mcnooby-pants
but i just want to know which combination of roms and kernels will give me a great battery life and at the same time i want to be able to overclock to 1.5 GHz
i looked through the forums and i did all the basic stuff like
undervolting
setting profiles in setcpu
and removing all the bloatware from the phone
but everyone has a different combination and im really confused as to which combination to use
right now im using eaglesblood 2.3.7 with the dragon kernel and its really not working very well
so any and all help will be appreciated
thank you
Slomo5793 said:
hi
sorry for being such a nooby mcnooby-pants
but i just want to know which combination of roms and kernels will give me a great battery life and at the same time i want to be able to overclock to 1.5 GHz
i looked through the forums and i did all the basic stuff like
undervolting
setting profiles in setcpu
and removing all the bloatware from the phone
but everyone has a different combination and im really confused as to which combination to use
right now im using eaglesblood 2.3.7 with the dragon kernel and its really not working very well
so any and all help will be appreciated
thank you
Click to expand...
Click to collapse
My opinion:
1. Jump on a stock-based ROM with stock kernel and UC (underclock to 900-800 Mhz, you would be surprised you notice very little change in performance). Most stock-based ROM users report back great battery life.
2. Jump on a CM7 Nightly 199 or higher (Reports of great battery life, I can attest to this) with morfic or faux123's kernel (I prefer morfic's) which you can undervolt easily with Pimp My CPU (search XDA). I prefer it to SetCPU because the only profile I use is UC when the screen is off and with Tegra's DVFS CPU governor, it already does a good job of doing this. I also UC with this setup.
Delete Wi-Fi Calling (Kineto.apk) from your phone if you're not using it. I learned this from lotherius, it's always running in the background even when off and not in use. I was shocked to see the improvement.
I know it sounds stupid, but if you're in class or at work and don't need a barrage of updates on your phone, just turn off data. Most ROMs have a quick toggle setting to efficiently turn it on and off quickly and you'll be quite happy with how long it lasts. If you have to have data on or think it's moronic to have an Android phone that's not does not always have a data connection, battery drain is just the price that is payed.
woah.
Awesome answer
so do you think option 1 is better or 2?
does using cm decrease the battery efficiency?
if it does do you think the extra functionality in cm makes up for the batteryloss?
Thanks btw
Try miui 1.11.4 from whitehawkx with faux kernel cm-4.4
Sent from my LG-P999 using Tapatalk
Slomo5793 said:
woah.
Awesome answer
so do you think option 1 is better or 2?
does using cm decrease the battery efficiency?
if it does do you think the extra functionality in cm makes up for the batteryloss?
Thanks btw
Click to expand...
Click to collapse
Good question, and I think that is totally up to you.
For example, my father and I both own G2x's, he runs a modified stock ROM (xboarder's ROM) and I run CM7. Without a doubt he gets better battery life than me, but at the cost of not having the features I have.
That may be a rough way of putting it but yes, using CM7 with all it's awesome features come with the price of not being as battery efficient.
The real question is if being less "battery efficient" actually means it's a bad thing. In my case it doesn't matter to me at all. Using the quick panel toggles in CM7, I only turn on data when I need it and I easily pull 15+ hours a charge because of it, assuming moderate usage.
Consider lotherius's tsugi rom, currently in version beta 3. It is my daily driver, stable, faster than 2.3.3 based roms, and excellent battery life. He has included a 2G toggle app that can automatically switch to 2g radio when screen is off to save lots of juice.
Sent from my LG-P999 using xda premium

[Q]Stock ROM with franco or CM11?

So I recently found out that franco kernel is no longer compatible with cyanogenmod 11. I would like to know which is more battery efficient. Having franco kernel with stock rom or cyanogenmod with the kernel that is shipped with it? Does anyone have experience in this?
battery is all about how you personally use your device, how you set it up, what apps you use, and mostly the quality of your phone/data signal. using either cm kernel or franco kernel can give you great battery life or terrible battery life. any kernel will give you great battery life or terrible battery life.
Longi94 said:
So I recently found out that franco kernel is no longer compatible with cyanogenmod 11. I would like to know which is more battery efficient. Having franco kernel with stock rom or cyanogenmod with the kernel that is shipped with it? Does anyone have experience in this?
Click to expand...
Click to collapse
Both are good and have their (dis)advantages. No one can tell you whats best cause different users have different preferences and needs. Best is to try them out yourself and see what you like best.
I am aware of that. I admit that I am quite the power user which mostly results in a pretty bad battery life. I just wanted to know which option has the better potential with the same amount of usage. I guess I'll experiment with it myself then
Longi94 said:
I am aware of that. I admit that I am quite the power user which mostly results in a pretty bad battery life. I just wanted to know which option has the better potential with the same amount of usage. I guess I'll experiment with it myself then
Click to expand...
Click to collapse
im one of the heaviest users you will meet, yet i still see a minimum of 5h+ screen on time every day. set up your device right, and if you have a great signal you will have very hood battery life no matter what you use.
Combine rooted stock, Franco kernel and the Xposed framework plus it's various modules and you will get most of the Custom ROM features along with better battery life and stability. I'm very pleased with that combo.
Sent from my Nexus 10 using XDA Premium HD app

General Consensus on Kernel/Tweak

Hi,
This is my first OnePlus phone and I'm really enjoying the 7 Pro. Battery life is good, but I want it to be great. Is there a general agreement on which kernel or tweak actually increases battery life without bugs? I see so many different versions and it's hard to keep up with the threads when I'm not following consistently.
Thanks in advance.
I'm using elementalx, it is better than stock kernal in terms of battery drainage, but I was also wondering what is a kernal? I know the basic that it loads before the os and is the device manager for all the drivers basically. But then what is the customizations? Aggressive progressive I o words I have no idea what they mean. One kernal focus on battery, another on speed, another on audio. Arnt all kernals basically the same then with just a different setting?
I use stock ATM
I started out using stock kernel then went to elementalx now I'm using Smurf and I'm getting the same battery life with better performance

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