yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] It_ler:
SGS2 has a chip on board which calibrates battery stats automatically (search for Entropy512's statements about battery calibration).

So, you do not need to "calibrate" your battery, because this does nothing more than clearing the battery stats.

The chip needs some time to auto-calibrate the fuel gauge to show realistic battery power states.

And 100% is not 100%.

The battery will be even the 100% fuel alert appears.

So, if you keep the phone charging on 100% for a while, the 100% will remain a little bit longer after unplugging than unplugging directly after the phone tells you to do so.

If you recognize an "abnormal" battery drain (or wakelock) and can not find an app causing it, try to wipe cache (and Dalvik cache) in recovery mode.

This has often fixed similar issue for me.

Good luck !

---------- Post added at 05:28 PM ---------- Previous post was at 05:18 PM ----------

Results for SpeedMod / Phenomenal / N.E.A.K. / Siyah / stock kernels

Everything is specific to my phone, my "normal" usage and my home location. Most values are exact results, but some are rounded. I usually have wifi, synch (three email accounts, calendar and news), Google Talk and Skype on.

For all custom kernels, I was running on Frankenstein XWLA4 ROM (Modem: XXKL1).

For stock kernels, I was running on the corresponding stock ROM.

Always using the Samsung's standard / stock 1650mAh battery.

For Siyah, as it has many, many configurable settings, I have changed nothing - just default settings.

For N.E.A.K. I tested VR schedule, Lulzactive governor, only enabled sched_mc and the rest unchanged defaults.

Just tested SpeedMod K2-21 and added its results.

Here are my current results:

Benchmarks (in Performance governor if available)

Battery stats

SpeedMod K2-21 is very stable, smooth and has very good battery savings on my phone.

Battery life is nearly as good as for undervolted kernels.

Congratulations hardcore, for that excellent kernel.

Ever thought about a small logo for your kernel?

I would add it to my signature.
[Galaxy S II Original Android Development] thanksgiving60:
k2-18 :D

best i9100 kernel. ever.
[Galaxy S II Original Android Development] thehunt33r:
Can we use this kernel with a ICS Rom ?
[Galaxy S II Original Android Development] pissyhun:
No for ics
[Galaxy S II Original Android Development] hirak99:
Thanks this is great... since I need CIFS, and I don't want to overclock or undervolt, I think this is the kernel of choice for me.

2 questions -

Q1.

Looks like the USB charging speed increase was taken back in K2-3 because of stability, but getting reintroduced in K2-20. Was the stability issue solved?

Q2.

Does the following involve overclocking/undervolting?
[Galaxy S II Original Android Development] Tyrol:
Nope, hotplug changes don't involve either, & can be tweaked using init.d scripts. Not too sure about frequency scaling but I don't think so

-----------------------

サンソングガラクシS II からタパトクで書いた。
[Galaxy S II Original Android Development] al_madd:
hello there...

I have a problem here..

Im using baseband DXKL1 with K2-21...just default setting which come with this kernel..

Im will have to stay at hospital for 48 hours starting today so I change network to GSM only..turn on mobile internet...

after 13 hours my battery have 76% left but after that my network signal lost..

just emergency call only..

I turn on airplane mode and turn off back but nothing change..

So I decided to reboot my phone..my signal back...

my question is..there is any correlation between kernel with this signal loss??
[Galaxy S II Original Android Development] :
Never had troubles with Network...maybe a coincident....
[Galaxy S II Original Android Development] mystombox:
"K2-20:

- CPU hotplug and frequency scaling adjustments

- GPU frequency scaling adjustments

- FUSE module included

- Increased USB charging speed to same speed as AC charger "

How does the USB charging work?

Because USB output is 500mA? Is that the same draw from the phone as via the charger?

Another point is regarding cleaning scripts.

Assuming we're upgrading/downgrading speedmod versions, is there a need to use a cleaning script?
[Galaxy S II Original Android Development] doongoo:
Using a cleaning script can never be a problem...
[Galaxy S II Original Android Development] tghandour:
Thank u It_ler for ur thouroug explanation and interesting battery and CPU tests u sent. They are very informative.

My problem was the Set CPU profiles i created for screen off which used 100-200 MHz as min and max CPU frequency. I disabled it and things were back to normal :-)

SpeedMod Kernel is the best kernel for me in terms of battery and smoothness. However i needed to save more battery by limiting Max CPU speed to 800 MHz as i used to do.

Is that possible with SpeedMod as whenever i limit the speed with Set CPU or CPU master it doesnt have an effect and it seems it keeps on the 1/1.2 GHz speed?
[Galaxy S II Original Android Development] komsa:
for you its much better to buy galaxy ace,its running on 800mhz CPU by default and some money remains in your pocket :)
[Galaxy S II Original Android Development] monster75:
now i'm using:

1200MHz 1150mV/1000mV

1000MHz 1050mV/1000mV

800MHz 950mV/1000mV

500MHz 875mV/900mV

200MHz 850mV/900mV

and for GPU:

267MHz@950mV

100MHz@800mV

It seems stable. Everything is smooth and battery-friendly
[Galaxy S II Original Android Development] tghandour:
How di you change the voltage settings as thet dont appear in any of the tools like setcpu or cpu master ir system tuner. As i know Speedmod does not allow changing Viltage settings.
[Galaxy S II Original Android Development] zekurosu:
hahaha everyone config is for their own preferences dude :D
[Galaxy S II Original Android Development] tghandour:
:-) lol

Battery for me is number 1 priority as i am casual email and social apps user..
[Galaxy S II Original Android Development] monster75:
I'm using Tegrak Ultimate, supported by Last Speedmod kernels
[Galaxy S II Original Android Development] komsa:
.... hesitated between siyah 2.6.7 and SpeedMod K2-21, but now I am convinced that SpeedMod is better(smoother performance and battery life) .......... thanks Hardcore, you did justified the reputation acquired from times when i was on i9000 :)
[Galaxy S II Original Android Development] tghandour:
SpeedMod is a true winner here. I really love it and sticking to it after trying Siyah and NEAK.

Excellent job done Hardcore
[Galaxy S II Original Android Development] rehanraza:
Very Fine Kernel.. the last build i used was k16 and it was really good at that time. i have used all kernels (Redpill 1.3, almost all versions of siyah, Naek and phoenix) and yours is as good as any other. only downfall, you cannot UC with any software but only tegrak. rest its been going really good from past 5 days.

keep up the good work
[Galaxy S II Original Android Development] coloxim:
Sorry..but sppedmod is compatible with Jay brightness auto level?
[Galaxy S II Original Android Development] 4l3gU:
No it's not compatible.
[Galaxy S II Original Android Development] crash_194:
Yes it is, all auto brightness levels work in jkay I'm currently running on darkest and makes a huge difference to battery. If your in any doubt whether it works just try the test mode and look how dark your screen goes.

The message which says "custom kernel required' is just like an advisory message, it isn't telling you the settings aren't compatible.

Edit: make sure you reboot your phone after selecting the auto brightness level you want so they are applied.

Sent from my GT-I9100
[Galaxy S II Original Android Development] crash_194:
Yes it is? Select profile then reboot phone, job done. Works a treat on my phone.

Sent from my GT-I9100
[Galaxy S II Original Android Development] Prockkaii:
The battery life looks great (by doing the math I should have 6h40 of battery screen life).

Never mind, is there a possibility to have the Stock colour?

I'm coming from the 2.6.35.7 og@007 #7 Kernel (and got a white version), and the colour looks very darkest.

If I compare a same picture between my phone and my LCD, the colour are very different. (I'm curently using the "video mode").

Thanks!
[Galaxy S II Original Android Development] legionxx:
hi guys,

just wondering if i can get any recommendation on which scheduler/governer is best for batter life on k2-21? many thanx in advance :)
[Galaxy S II Original Android Development] crash_194:
Try the different settings available in the "Voodoo Screen Tuning App" available in the market (for free) and see what you think.
[Galaxy S II Original Android Development] Atomix86:
Is this kernel better than Siyah 2.6.1 kernel for battery life & stability (I imagine it is much better for stability as it doesn't use OCing which I also won't be using, but was just mainly interested in the battery life side of things!).

Many thanks :)
[Galaxy S II Original Android Development] omeryounos:
My personal experience is that in terms of battery life better than all siyah versions.
[Galaxy S II Original Android Development] KhairyMercury:
i have to say this is the best kernel so far besides Phenomenal. Previously i used all the siyah's kernel and the battery life is awful (no disrespect to Ghokan Moral). I just wanna say thankyou so much for this wonderful kernel. Keep up the good work
[Galaxy S II Original Android Development] aers99:
Setuju... setuju... hahahaha....:D
[Galaxy S II Original Android Development] Prockkaii:
Thanks a lot mate!

It's working like a charm.

Now, let's analyse if the battery life is still fine.
[Galaxy S II Original Android Development] al_madd:
phenomenal is a speedmod kernel with some scripts and UV
[Galaxy S II Original Android Development] gualandd:
A question from a new user: why this kernel don't supports boot animations?

Inviato dal mio Galaxy S2 CheckROM RevoHD V.4 usando Tapatalk
[Galaxy S II Original Android Development] komsa:
http://xdaforums.com/showpost.php?p=17977695&postcount=1946
[Galaxy S II Original Android Development] legionxx:
Hei guys. What scheduler and govnerner can is recommended for battery life ?

Sent from my GT-I9100
[Galaxy S II Original Android Development] al_madd:
shcduler for me is I/O

gov: tweak conservative..

but just use default by hardcore for this kernel...already battery saving..
[Galaxy S II Original Android Development] komsa:
without any scheduler,governor and scripts,battery life and performance is fantastic..........try as it is and if your' not satisfied then try philosophizing :)
[Galaxy S II Original Android Development] sm625614:
Hey guys quick question when i use stock kernel the dynamic screen is very nice when i switch to phenomenal or speedmod the colors seem not as vibrant and washed out. Can anyone help me
[Galaxy S II Original Android Development] miisterlim:
it's meant to be like that. hardcore has tweaked the screen colors so it's less saturated.
[Galaxy S II Original Android Development] sm625614:
is their anyway i can over saturate them lol?
[Galaxy S II Original Android Development] shumo:
any possibility on changing the usb charging speed back to normal ? on k21
[Galaxy S II Original Android Development] zabranjeniples:
This is best kernel for me.
[Galaxy S II Original Android Development] iNeri:
Yes. flash stock kernel :D

Enviado desde mi GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] jonny68:
Undoubtedly the best Speedmod kernel release to date absolutely superb on the battery and very smooth, i don't bother anymore with SetCPU or the likes there is really no need when you have a kernel as good as this for battery and im not fussed about boot animations either.
[Galaxy S II Original Android Development] Atomix86:
I agree battery life is incredible, can't thank hardcore enough.
[Galaxy S II Original Android Development] hughfollett:
Stupid question here, but please answer me! If I flash speedmod k2-21, will it change my modem too?? This happened to me the last time I tried this kernel....

Sent from my Galaxy SII powered by CheckRom
[Galaxy S II Original Android Development] spelaben:
No, flashing a kernel does not change your modem version.
[Galaxy S II Original Android Development] chrisjcks:
No, speedmod or any other kernel has never changed your modem.
[Galaxy S II Original Android Development] jonny68:
I have noticed that Android OS is not as bad on standby it was only 12% im not sure if this has anything to do with me freezing some apps which i rarely use like Viber or not?

Superb battery life on this kernel definitely a keeper
[Galaxy S II Original Android Development] KeesStolk:
Really love the Speedmod kernels, but with Checkrom V6 it is not that smooth.

I wonder why.

Currently testing Redpill kernel and all is smooth(er), but the battery life of Speedmod is better.
[Galaxy S II Original Android Development] komsa:
then try Siyah 2.6.7 (as it is) :)
[Galaxy S II Original Android Development] kotaxor:
Well...it has been more than two weeks after install k2-21.

Everything remains stable and smooth.

Battery is excellent as always.

Thanks to hardcore for this kernel.
[Galaxy S II Original Android Development] fastolfi:
Battery excellent!

Some requests: compatibility with 2nd core, BLN support and charging voltage control.

It's possibile?
[Galaxy S II Original Android Development] tghandour:
Trying Siyah till 2.6.11, NEAK 1.3.3, Void Echo,... Speed Mod is the best in terms of battery life and stability. Phenomenal 4.0 Extreme might give u better better battery if your Mobile can tolerate UV. It is based on SpeedMod K2-21 + UV and other power tweaks to give even more battery life.
[Galaxy S II Original Android Development] Soviet_Rebel:
Please HARDCORE can you investigate?
[Galaxy S II Original Android Development] belerephont:
Fairly new to rooting here (only rooted a couple of weeks now with cf-root). Wanted to try this kernel but would like to know what am I going to lose from cf-root. CWM etc will be still there after flashing speedmod?

Also are there specific kernel versions like the cf-root or fits any 2.3.5 rom?

Thank u in advance
[Galaxy S II Original Android Development] doongoo:
CWM recovery will be there.

CWM manager apk will be there, but with less function
[Galaxy S II Original Android Development] belerephont:
Thanks for your reply! Less function u say. Meaning?

Do I just download the latest speedmod version irrespective of my 2.3.5 rom? Cheers
[Galaxy S II Original Android Development] tghandour:
Hardcore what is the best app to use with speedMod for:

1- Setting CPU frequency limit (for example too 800 or 1000)

2- Autostart apps enable/disable

3- Battery saver

4- Voltage Control

Thanks
[Galaxy S II Original Android Development] so_ony:
when will the next version of SpeedMod Kernel released?

i tried it for Checkrom V6 and is not that smooth how before
[Galaxy S II Original Android Development] qureyoon:
Tomorrow. Or later.
[Galaxy S II Original Android Development] so_ony:
Thx for hearing such a good Information ;)
[Galaxy S II Original Android Development] cosmyjtg:
SpeedMod the best kernel ! Stable, smooth and excellent battery life.

Thanks:D
[Galaxy S II Original Android Development] belerephont:
Installed the kernel last night but I cannot find the "Voodoo Screen Tuning App" in the market. Can someone pls post a link for it and share your settings?

Thank you
[Galaxy S II Original Android Development] Prockkaii:
Since I use Speedmod kernel, my computer don't recognized the phone anymore.

So I can't transfer any file to the SD card right now.

Does anyone have the same behavior?
[Galaxy S II Original Android Development] dica:
No problem here, i think u have a driver problem

____________________________________

CheckRom V6

Tapataking from SII
[Galaxy S II Original Android Development] crash_194:
It doesn't look like it's on the android market anymore? Its by supercurio by the way.

Sent from my GT-I9100
[Galaxy S II Original Android Development] qureyoon:
Hardcore has no obligation to answer on all types of 'ETA' questions.

Us layman should show appreciation by having faith and waiting patiently. Not demanding.

Especially if what we do is just come here and download.

In rude terms, we are 'leechers'

So yeah, when it's ready tomorrow, it'll be there. If not then later should come.

Can't wait? There are plenty of other kernels.
[Galaxy S II Original Android Development] zekurosu:
that is surely not kernel related mate ... i've been using speedmod since k18 version n never once my pc didnot recognise my phone

must be something in your config
[Galaxy S II Original Android Development] belerephont:
If you mean the "Voodoo Display Filter" its in the market alright. Thanks:D
[Galaxy S II Original Android Development] morg01:
I think you'll find that Hardcores' MDNIE tweaks breaks the 'original' Voodoo screen tuning app . . . I seem to remember reading it in the apps notes (but that app seems to have been discontinued on the market)
[Galaxy S II Original Android Development] crash_194:
Funnily enough I didn't mean that, that's why I said "screen tuning app" and as pointed out its looks like it's no longer available.

Sent from my GT-I9100
[Galaxy S II Original Android Development] belerephont:
Ah ok! So with these tweaks basically we don't have to do anything! The Kernel does everything on it's own, correct??
[Galaxy S II Original Android Development] morg01:
Yeah that's right :thumbup:

Sent via courier pigeon
[Galaxy S II Original Android Development] Prockkaii:
Correct, it was because of my drivers thx dude !
[Galaxy S II Original Android Development] tghandour:
I have a question here, when i limit my CPU speed to 800 or 1000 MHz using CPU Master or Set CPU or System Tuner it seems the system still jumps to 1200.

Any idea why the limit is not effective?
[Galaxy S II Original Android Development] jonny68:
I highly doubt i will flash another kernel unless it's actually posisble that Hardcore can make it even more battery friendly which would be a big IF, this kernel is simply amazing, undoubtedly the best Speedmod release to date (K2-21)

check screenshots below, Data and WiFi off on standby but still pretty awesome.

Donation coming your way Hardcore when i get paid.
[Galaxy S II Original Android Development] Bommeke:
I agree with you, but 6-7 hours isn't a real benchmark.

Currently on my first full cycle:

1 day and 12,5 hours

Of which 2,5 hours of display time, 0,5 hour phone calls, Wifi on all the time and a lot of whatsapp, facebook and internet use

Still have 44% left

Will post final results with screenshots when battery is under 5%
[Galaxy S II Original Android Development] spelaben:
Better use voltage control, much more reliable than SetCPU or the other apps.

Gesendet von meinem GT-I9100
[Galaxy S II Original Android Development] adudele:
I want BLN :)
[Galaxy S II Original Android Development] beaver2233:
good for you...I want a Porsche
[Galaxy S II Original Android Development] dem000n:
Yep. SetCpu is vital to play some games without burning your hands :D
[Galaxy S II Original Android Development] flute:
Using this kernel with Leomar ROM and works fine.

Just to know if anybody had problem with battery heating, cos' mine getting quite warm (ca 42 c degrees) after surfing the web for approx 30 min.
[Galaxy S II Original Android Development] beaver2233:
for those that care...this is of my battery usage with the latest speedmod (t-22) and latest LeoMar's Revolution v2.5 rom...very impressed, 2hours45mins of screen on time...note: I'm not too sure why the battery goes up at one point...
[Galaxy S II Original Android Development] hung77:
how about some brightness information?
[Galaxy S II Original Android Development] beaver2233:
varies depending on if I'm inside or outside...75% of the time probably on minimum brightness, but I change it accordingly when I'm unable to clearly see the screen...
[Galaxy S II Original Android Development] abhiwltya:
Awesome work buddy.Stable and good battery life.M losing like 1% every 2 hours on stand by.Keep it up
[Galaxy S II Original Android Development] chareos12:
Hi,

I'm sorry for this silly question, but I'm just trying to figure out a few things.

May I ask you how hour kernel compares in features/optimizations with the standard Cyanogenmod7 one ?

MANY thanks !
[Galaxy S II Original Android Development] mrabcx:
I have some issues with SpeedMode when running together with Smart App Protector (SAP) which can be downloaded from the market. Using SAP one can 'lock' certains apps and would need to enter a code/draw a pattern before these apps can be started.

The first minor issue when using this kernel is that a locked app starts up and the main screen of it shows up _before_ the SAP lock-screen appears. Normally the SAP lock-screen would appear first and if unlocked then the main app would show up.

The second problem is that one can configure SAP so that one would not need to re-enter the password/pattern until say another 5 minutes; or alternatively not re-enter a password/pattern till the screen has been turned off. Using SpeedMod Kernel these functions do not work and the lock screen re-appears all the times.

These problems may well be related to this particular app, Smart App Protector, but nevertheless I thought I would point out and also do not occur with some other kernels. Seems to me that there are some timing related issues.
[Galaxy S II Original Android Development] hardcore:
Many App Protector apps depend on the Android Debug Logger. It is disabled in this kernel. You can enable it by looking at the instructions in the first post.
[Galaxy S II Original Android Development] 212121:
the kernel to cognition is great, you're going to upgrade?

bln, oc
[Galaxy S II Original Android Development] malez:
Thank you for this good kernel. It works well and battery life seems to be good. As other users have reported. I would be a good idee to implement frequency scale and polycy governor so we could use setcpu to underclock / overclock. Do you plan de implement it ? Moreover people could refuse to use it when the see that setCpu force close at lauch. That is just a simple advice. Thnk you for the good work
[Galaxy S II Original Android Development] sicopat:
I believe this kernel is built to mach hardcore wiches...

There are others kernels some working with Tegrak others with SetCpu.

Usualy you already know that reading the title of the thread "OC to 1.6 Ghz ..."

Don't say "people want...", when You mean "I want ..." :D
[Galaxy S II Original Android Development] shareloader:
wrong message. sry.
[Galaxy S II Original Android Development] stefanjadex:
Hi,

I want to ask if this kernel is compatible with Lite'ning 4.2 KG3 / 2.3.4 .

If it is, what version to use?

I read that I can flash with CWM Manager. Will this remain in my phone after flashing (CWM manager)?

Regards,

Stefan
[Galaxy S II Original Android Development] imran077:
Stuck in boot loop - No Recovery mode but can flash using download mode

after installing this kernel I am stuck in bootloop. I cant access recovery using Vol Up + Home + Power but I can access Download mode and flash roms using ODIN. But no use. Everytime its stuck in boot loop and either the initial boot logo flashes or it stays stuck at the boot logo. Can please someone help. I read all the comments and lot of people having problem being able to get into Download mode but not in Recovery Mode. I would appreciate if someone can post a detailed response as to how to get rid of this issue.
[Galaxy S II Original Android Development] hardcore:
You probably did something wrong in the Odin flashing process.

At this stage you'll probably want to try re-flashing a complete firmware using Odin, and be prepared to lose your data.
[Galaxy S II Original Android Development] dyallo:
If the phone is in flight mode for 10 hours, no active app running at all.

You look at battery usage, and you see that AndroidOS is at the top.

Could it be all the debugging the kernel is doing? Logcat, Kernel and Samsung debug?
[Galaxy S II Original Android Development] hardcore:
You're referring to other kernels right?

Because this kernel disables all those debugging options. It also does not report Android OS in the battery usage because CPU stats are disabled.