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I have used ninphos 2.04 and 2.05 and alot of chainfires kernels (kg2 kf2,kg3 and more)
I have noticed alot of diffrence regaring batterylife....between each one...I THINK chainfires gives best battery so far and ninphos 2.04 alot better battery than 2.05 (maybe its the BLN support that uses more battery even if BLN is not used)
So now I want a thread were you recomend the best kernels for batterylife!
So what is the your opinion?
Does a kernel really have something to do with battery life?
The kernel ought to be one of the major 'invisible' factors. It is always active, and has an impact of the timing of everything else that happens on the phone. Particularly if there are bugs which have a detrimental impact on battery, the kernel might expose or hide them. That's not to say that the best kernel will necessarily give best battery life.
I don't think it's BLN if not used.
I did some tests and when the lights are not flashy-flashy the phone enters deepsleep as supposed to and my battery life hasn't gone done noticabely, if you don't use BLN at all there isn't even the BLN service running in the back, so even less to worry about.
Ninphetamin is aimed at performance IIRC, so that could really make a difference, CF-Root is pretty much stock kernel + some initramfs mods, so should give same results as a stock kernel.
HellcatDroid said:
I don't think it's BLN if not used.
I did some tests and when the lights are not flashy-flashy the phone enters deepsleep as supposed to and my battery life hasn't gone done noticabely, if you don't use BLN at all there isn't even the BLN service running in the back, so even less to worry about.
Ninphetamin is aimed at performance IIRC, so that could really make a difference, CF-Root is pretty much stock kernel + some initramfs mods, so should give same results as a stock kernel.
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Maybe you are right, but I experience better battery in 2.04 than 2.05.
Anybody have tried speedmods kernel? Does it have good battery compared to CF-Roots kernel?
tshoulihane said:
The kernel ought to be one of the major 'invisible' factors. It is always active, and has an impact of the timing of everything else that happens on the phone. Particularly if there are bugs which have a detrimental impact on battery, the kernel might expose or hide them. That's not to say that the best kernel will necessarily give best battery life.
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Imo I think you are correct since the Kernel is the base for everything while Android is running.
Thus, you better flash to a stable/faster kernel in order to achieve better battery performance ?
I really don't have any experience with the Kernels out there, only flashed to Chainfire CF-root, though I would love to hear opinions about ppl that used few different kernels and tell their thoughts about it.
ShivaShidapu said:
Imo I think you are correct since the Kernel is the base for everything while Android is running.
Thus, you better flash to a stable/faster kernel in order to achieve better battery performance ?
I really don't have any experience with the Kernels out there, only flashed to Chainfire CF-root, though I would love to hear opinions about ppl that used few different kernels and tell their thoughts about it.
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I wrote a little bit in my OP, but I write again, ninpho is really good, very fast and pretty stable...CF-root I see is better battery and more stable but a little slower...
those two I have tried...anybody that have tried others are welcome especially speedmod kernel as I'm thinking about flashing it
tshoulihane said:
The kernel ought to be one of the major 'invisible' factors. It is always active, and has an impact of the timing of everything else that happens on the phone. Particularly if there are bugs which have a detrimental impact on battery, the kernel might expose or hide them. That's not to say that the best kernel will necessarily give best battery life.
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Thanks for your reply mister.
I have a question going on in my mind as this is about kernel, well I also was rooted with CF kernel but lately I flashed Ninphetamine 2.0.5 kernel, only to use BLN, and I have root too, now afaIk, I can't have two kernels at a time, so may I know how I have root still when I've flashed with Ninphetmanine kernel and I have both BLN and Root altogether?
Pardon me if it's a stupid and so called 'noob' query but I'd really like to know this.
Regards.
different kernel does different things.But if your phone has already been rooted,I thought root will stay in your system,after your flash N kernel,you can use BLN with root.
That's what I think,maybe is not true
I've tried several kernel. one of my favorite is ninpo 2.0.5. battery life look good and it run faster.. angelom kernel also good but i've got issues on angelom 16 and 18.. phone run hot when using WiFi.. but angelom give me the best battery life when it come to idle.. but drain fast when i'm surfing..
will try speedMod kernel.. could some one give me some review on this kernel?
Thanks in advanced..
Hi, I am a noob so please help us out?
Flashed my SGS2 (first time android phone)with CF Kernal KG1 to get root, and bloatfreezer to freeze Samsung and Optus crap as per lists on XDA. Rather than getting better battery life I have noticed a quick drain on the battery. Namely Android OS which uses about 50% overnight.
Is this normal? what can be done?
I dont see much of a difference between CF-Root kernel, speedmod, and ninpethaine 2.0.2 - 2.0.5. Except speedmod doesnt allow CPU monitoring, overclocking and undervolting.
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I did try speed mod and honestly, I feel ninpo give better life than speedmod. Well it could just be me but I just tested it at average usage...So, yeah...
zzkonzz said:
Hi, I am a noob so please help us out?
Flashed my SGS2 (first time android phone)with CF Kernal KG1 to get root, and bloatfreezer to freeze Samsung and Optus crap as per lists on XDA. Rather than getting better battery life I have noticed a quick drain on the battery. Namely Android OS which uses about 50% overnight.
Is this normal? what can be done?
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Click to collapse
Well honestly, if I remember clearly, there is an OS bug currently. However, why don't you try on other such as KG6 or KG3?
Also, did you install anything middle of the way? Could be an app or something?
how do i install ninphetamine 2.0.5 on Litening Rom 5.0 ?
chiggah said:
how do i install ninphetamine 2.0.5 on Litening Rom 5.0 ?
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Via Odin I think. Select the .tar under PDA.
hi just wanted to ask if there is a ROM there that is as close as the original ROM of the samsung galaxy s II in terms of apps and looks but is tweaked for better battery perfomance?
cause my dad bought a SGSII almost a week now, and we only get about 5-6 hrs of it using only it. already did about 4 charge cycles. (4 only cause most of the time the GSII is off, my dad's getting a hang it yet)
config:
- stock android 2.3.3
- 3g auto
- auto backlight (but we are inside a mall so the backlight is isn't that bright & have strong signal)
- auto sync is off
- background data is on
- haptic feedback is off
- audible selection is off
- fast dormancy is off
- power saving mode is on
- juice defender app in balanced setting
apps running:
-skype
-messenger
it drains a LOT even in standby a lot more when using it (browsing, not yet chatting). my hd2 is much more efficient knowing it is not a native android smartphone...
is there a tweaked battery efficient rom there that is as close or at least still looks as the stock?
You can do three things,
1- Install Better Battery Stats and see under 'Partial Wakelocks' to see whats running on background.
2- Stay on Stock ROM and flash a kernel which allows Voltage tweaks and install SetCPU and Undervolt CPU. Ninphetamine 2.1.3 is such a kernel.
3- If thats too complicated for you, then flash an Undervolted kernel, like SpeedMod.
I won't advise you to change to a Custom ROM for battery backup betterment. But doing the above processes will certainly save some.
Regards.
Sent from my GT-I9100 using XDA App
ithehappy said:
You can do three things,
1- Install Better Battery Stats and see under 'Partial Wakelocks' to see whats running on background.
2- Stay on Stock ROM and flash a kernel which allows Voltage tweaks and install SetCPU and Undervolt CPU. Ninphetamine 2.1.3 is such a kernel.
3- If thats too complicated for you, then flash an Undervolted kernel, like SpeedMod.
I won't advise you to change to a Custom ROM for battery backup betterment. But doing the above processes will certainly save some.
Regards.
Sent from my GT-I9100 using XDA App
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Click to collapse
thanks for the quick reply, so custom kernels work with the stock rom...i thought it won't. i'm not that familiar yet with native androids cause in HD2 most of the undervolted kernels there are already built in the roms so i don't change it that much now with the NAND builds....but anyway, i'll try for the mean time # 1 & 3....i'm not that into that #2 tweaks yet in a phone that is not really mine....
It is proven that Stock ROM's with custom Kernels have sweet battery life. As with Stock ROM's they haven't tweaked anything, it's just stock and you flash what YOU want, whereas a custom ROM you're getting things you dont infact need.
I keep going back and forth from Custom ROM's to Stock ROM's.
Hi
I would also recommend looking at SicOpat's ROM (http://forum.xda-developers.com/showthread.php?t=1183774)
This is essentially a stock, rooted ROM with a custom kernel and I find it exceptionally good.
The other thing I would recommend then is to install Titanium Backup and freeze/uninstall a lot of the Samsung apps - WiFi Sharing, software update, *hub stuff. Removing these has a very positive impact on battery life.
Hope this helps.
-Barry
I have also been troubleshooting poor battery life on my phone. I used to lose 10-15% an hour just idling. I reflashed Stock KH3 with the KH3 CF-ROOT kernel and reinstalled a few things (twitter, yahoo messenger, google voice, and some apps that don't sync data). Currently I had 18hrs now with 60% left. MUCH better. A lot of the time the phone was idle but I did listen to music, play some games, and browse the internet/chat, use wifi a bit. Phone only lost like 4-6% overnight. (sorry I don't have hard figures but I didn't document any of it on paper). I'm trying to find out what was killing my battery so I am installing things little by little but I would definitely recommend stock KH3. Seems great so far.
I think your problem lies with the wifi-sharing battery bug. I hear this is updated in newer roms. This was the biggest battery hog on my phone, but after noticing it, my battery life is excellent now.
When Wifi is turned on/off this erroneous process starts in the background called "Wifi-Sharing". It hides and drains your battery at a VERY fast rate. The remedy is simply to "Force Stop" this process after you use Wifi.
Let us know if that helps.
You could root the phone and install Titanium to freeze this process permanently.
Please use the Q&A Forum for questions Thanks
Moving to Q&A
sorry for the wrong forum i got messed up in opening a lot of samsung galaxy sII threads....
i dont see the "wifi sharing" in my dad's GSII when we used it. and as with kies, i think JKG2 firmware is the latest, so i assume that the wifi sharing bug has been fixed there, yes?
i know it would consume a lot since the GSII has a big "engine" but i didn't expect it to eat a lot even on standby with only YM and SKype messengers running in the background.
i'm still observing it. i'm still running stock.
EDIT: i just used wifi to download an app then when look for running apps, i saw "wifi-sharing" is running but i didn't even turned it on
i just flashed Speedmod T38 kernel (it seemed less complicated to use ) now observing if my dad's SGSII gets better
Hello everyone.
I'm a cognition rom user (currently 1.5.1) for quite some time. Everything is fine, no bugs, no problems at all.
I'd like to ask you guys if anyone has tried another kernel other than ninphetamine that the rom comes with, and had better speed/response/battery life.
Any suggestions?
If you manage to get to my reply beneath that monstrosity of a signature, there's currently 9,365 posts of discussion in its thread [ROM][2.3.5][XXKI3] Cognition S2 v1.6 | Now Live!.
If you're looking for opinions about something related to the use of that ROM, I'd suggest reading through that thread. Searching that thread for "kernel" returned 945 posts.
Siyah, Speedmod or stock based CF Root are the most popular as the moment.
nikzDHD said:
Siyah, Speedmod or stock based CF Root are the most popular as the moment.
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Ninphetamine development kinda stopped at 2.1.3 a while back.
Speedmod, at least the last time I tried, lacked quite some features. It doesn't even do custom boot animation.
Siyahkernel, very good. Pretty much all governor/schedules are there with NTFS support, bln, and very active in development.
CF-root kernel, as stock as it gets. For 2.3.5 anyway, it's been reported to have great battery life. But it doesn't have many functions beyond that.
In any case, the battery life on each kernel, if you don't oc/uc/ov/uv, you won't see much difference. The android os bug, which drains your battery, still happens in all kernels occasionally, when it doesn't happen, battery life depends on your other apps running in the background.
Sent from my GT-I9100 using Tapatalk
Hi guys, im using the latest litening rom on my galaxy s2 - i didnt really use the stock rom, because ... you know ...
However, i installed it and i was suprising how fast the battery went gone!
Maybe i did something wrong... but i installed the rom over the stock rom as told on the litening thread! the kernel was installed with the rom!
since then ive tried many things and the speedmod kernel. ive also read some posts about the litening rom, about some users having really good battery life!
Am i doing something wrong? did i forget anything? does the kernel do a big diffrence? what baseband should i use?
I am using only Wlan and some games! Ive tried freezing apps flashing other kernels and some other things!
PLEASE HELP ME! i dont know what to do!
You've not given any useful information at all to locate sources of battery drain.
oinkylicious said:
You've not given any useful information at all to locate sources of battery drain.
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Ok i locatet a problem! a game called 'virtual playground took about 50% life! but i want to know what i can do in general to revent the draining!
i always keep wifi bluetooth and gps off. no backgroundapps and no widgets!
is there a good kernel to use with liteningrom that saves energy? i heard much about the speedmod and nympetamine - or what the hell its called - wich one is better? and does the bandbase effect the battery life in any way?
playerx95 said:
i want to know what i can do in general to revent the draining!
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Stop using the phone if you want the battery to stop draining. If you have, and it still does (rapidly), look into BetterBatteryStats to find what's waking your phone.
I've been reading up a lot about custom ROMs, and more often than not CM9 always gets a mention. I'm tempted to flash it but just wanting to know is it really worth it? Does it have major improvements on battery and performance, and what are the main things that make it so much better than the stock ROM?
Also is it easy to revert back to the stock? I've already got my phone rooted with CF-Root, is that the clockworkmod recovery I've read about, and if so can I just go ahead with making a backup and flashing with CM9?
Any help/info would be appreciated.
joeyh51 said:
I've been reading up a lot about custom ROMs, and more often than not CM9 always gets a mention. I'm tempted to flash it but just wanting to know is it really worth it? Does it have major improvements on battery and performance, and what are the main things that make it so much better than the stock ROM?
Also is it easy to revert back to the stock? I've already got my phone rooted with CF-Root, is that the clockworkmod recovery I've read about, and if so can I just go ahead with making a backup and flashing with CM9?
Any help/info would be appreciated.
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Click to collapse
Its users choice read what does not work first .
CF root is not Clockwork Recovery but it probably has CWM recovery incorporated .
CWM manager in apps and boot to recovery should show CWM options .
jje
CM9 is experimental and still has several flaws and issues.
I'd not recommend it for everyday usage if you're not a developer or like living on the edge.
Plus, 3G battery life is terrible since CM9 has no Fast Dormancy. Within ~5 hours the battery was always dead on me.
Samsung-based Roms make it more than 24 hours in contrast.
It will of course get better when the ROM is properly fixed and all features integrated. It always does =)
Also is it easy to revert back to the stock?
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Click to collapse
Flash Stock firmware through Odin, then factoryreset the phone in CWM. You're back to stock
d4fseeker said:
CM9 is experimental and still has several flaws and issues.
I'd not recommend it for everyday usage if you're not a developer or like living on the edge.
Plus, 3G battery life is terrible since CM9 has no Fast Dormancy. Within ~5 hours the battery was always dead on me.
Samsung-based Roms make it more than 24 hours in contrast.
It will of course get better when the ROM is properly fixed and all features integrated. It always does =)
Flash Stock firmware through Odin, then factoryreset the phone in CWM. You're back to stock
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So that must be the drain issue everyone is talking about. I use 2G only on T-Mobile and I get awesome battery life haha. Good to know I must be the only one
Sent from my GT-I9300 using Tapatalk 2
a lot of the battery issues are due to not resetting battery stats. You fully charge the phone, clear the stats, then charge it again I think? Search there are instructions.
I've got CM9 on an Atrix which isn't even a supported device and it's totally daily usable. The only things I lose which are only b'cause it's an atrix are:
Fingerprint reader
Webtop
video camera
Check out what works and doesn't with CM9 for your phone and decide. I like it a lot, it's TOTALLY stripped though, like no google aps (you can install them as a package)... There are lots of weird intricacies to it but it's cool as hell IMO
NonovUrbizniz said:
a lot of the battery issues are due to not resetting battery stats. You fully charge the phone, clear the stats, then charge it again I think? Search there are instructions.
I've got CM9 on an Atrix which isn't even a supported device and it's totally daily usable. The only things I lose which are only b'cause it's an atrix are:
Fingerprint reader
Webtop
video camera
Check out what works and doesn't with CM9 for your phone and decide. I like it a lot, it's TOTALLY stripped though, like no google aps (you can install them as a package)... There are lots of weird intricacies to it but it's cool as hell IMO
Click to expand...
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Resetting/erasing battery stats does nothing.
Sent from my GT-I9300 using xda premium
I've got CM9 on an Atrix
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At least the build for Atrix is not pre-alpha EXPERIMENTAL =)
It takes some time for the developers to get it right on the S3. I've never said CM9 itself had issues, it's the combination of CM9+ i9300 that needs some serious work.
I have or manage a couple of CM9-flashed devices (from Galaxy S1 over Galaxy S2 to Motorola Xoom) so I know how awesome the Rom is =)
Cheers for all the replys.
Are there any other custom ROMs worth looking at? I've heard CM9 is the most popular but if it's not quite usable daily yet I might give something else a try.
CM9 is currently very usable. I have no problems whatsoever. It has many advantages to stock ROM like no low free memory problem, no launcher redraws and no lags. The only real disadvantage is that the camera app sucks compared to stock.
It must like your phone better.
Kept turning off the modem for no reason, sometimes restart was necessary to connect.
It also has no fd as already described, so many people will notice a huge drain in 3g.
Btw you can easily get rid of memory issues by freezing/removin, all the apps you do not need but which are always running.
Sent from my GT-I9300 using xda premium
aydc said:
CM9 is currently very usable. I have no problems whatsoever. It has many advantages to stock ROM like no low free memory problem, no launcher redraws and no lags. The only real disadvantage is that the camera app sucks compared to stock.
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I agree 100pct.
I don't even notice it's rom'd till I want to take a video or use webtop :-(
The tablet switching roms work great though. I played with jokers and LOVED it but couldn't get gapps installed for some reason.
Sent from my MB860 using xda premium