yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] yottaFLOPPS:
On Siyah latest released kernel, there's a cpu tweak under preformance in romcontrol which allows to set the Min CPU Freq to 25, 50, 100 Mhz, so far everything's ok at 100 Mhz, although I wouldn't try below that treshold, nor messing with undervolting the CPU in the kernel tweak under the voltage control panel.
[Galaxy S II General] T3rran:
hi, your config works pretty good with Resurrection/N.E.A.K. 2.0.4x. Didn't notice any drastic improvement on battery, but I guess it helped a little bit. Thanks!
[Galaxy S II General] lionsmatara:
brother Im using SIO + Luzactive with voltage control... :D:D:D

SCHED_MC/AFTER n Ext4 options also enable..:D:D:D

24h battery life:eek::eek:

data On:p

sync On:p

Normal use :D:D
[Galaxy S II General] Jarmezrocks:
Not sure if this is good or not, but I got 1 day 8 hours and 34min out of my SGSII. Its a week and a half old though.

Custom ICS ROM by me (finished 2 days ago) and siyah kernel.

Running galaxy live wall paper, Genie widget and my own custom ICS clock widget. Also had 3G and wifi on 24/7 phone left on whilst asleep. Brightness set to auto. But I am running Juice defender ultimate.

My ROM is supercharged and running on conservative kernel settings. Avg quadrant (its all I have installed so far) is 2800ish, but phone is very zippy and smooth to feel so score means jack**** to me. My SGS1 running my ROM was getting 3200ish quadrant scores, and choking on 160apps running ICS 4.04, SGSII is smooth as, no gitters, no lags what so ever and 211 apps.

So far I am impressed with SGSII performance, although I have nothing to rate it against because it never ran the standard ROM beyond first boot lol. Had gingerbread, booted it, did immediate OTA update to standard ICS and then let it charge and by the time it was finished charging I had new ROM ready to flash...I hated gingerbread on SGS1 anyway.

James
[Galaxy S II General] Sad56:
I have test your config with Noop/ondemand last 2 days No freeze.(D4 rom v10)and really smooth.

Now i'm on Paranoid v0.3 (new name of D4)kanged with last cm9 nightly.

I test noop/conservative (with Lionheart)+ just ext4.

Tell me if you want i test another config.
[Galaxy S II General] ronalzhe:
problem solved
[Galaxy S II General] CamoGeko:
Ah ok, thanks mate. For me it seems like it was the undervolting that CM9 doesn't like for some reason. All voltages -50mV is working fine though with stock kernel. I will have to update the first post soon with revamped voltages.

Sent from my GT-I9100 using Xparent ICS Blue Tapatalk 2
[Galaxy S II General] Sad56:
I also have lockscreen freeze with conservative + lionheart.With noop/sio and vr :(

Revert back to Ondemand and test xith noop (+ext4)

so bad because conservative + lionheart was really smooth and battery friendly for me.
[Galaxy S II General] mansellkarl:
amazing stuff, battery was a major issue before i used your settings, now all my problems are solved, great stuff, thanks
[Galaxy S II General] lionsmatara:
Please Help

Im using Wanamlite 11.3.1 + N.E.A.K 2.0.4 with VC...

Chargin current -

Charger : 650mA

Misc : 650mA

Usb : 450mA

i charge my mobile on Standby mode >> my battery drain too fast...

After i charge my mobile power off >> battery life fine

what is the change point to fix my problem...

I think you will can help me..

Sorry 4 bad english...

Im waiting 4 ur good respoce...

Thanks..
[Galaxy S II General] CamoGeko:
Glad its all sorted for you, sounds like its working perfectly just as expected.

Sent from my beastly GT-I9100, running the latest CM9 Nightly and using ICS Inverted Tapatalk 2. Boooya!!
[Galaxy S II General] CamoGeko:
Also guys, I'm getting used to Siyah 3.2.4 running on CM9.

Will be posting some settings for you ina couple of days, after I test out different Governor + Scheduler combos.

Extweaks config will be included.

There is an update coming soon for NEAK ICS as well. :)

Sent from my beastly GT-I9100, running the latest CM9 Nightly and using ICS Inverted Tapatalk 2. Boooya!!
[Galaxy S II General] bajee11:
One of the most informative thread for all XDA users. Keep up the good work
[Galaxy S II General] CamoGeko:
Why haven't you updated to Siyah 3.2.4?
[Galaxy S II General] waris_arsh:
i have got it and going to flash it

and can i use this config on siyah 3.2.4 wd same rom?

http://www.gokhanmoral.com/gm/2012/05/16/siyahkernel-v3-2-4/
[Galaxy S II General] waris_arsh:
galaxy S2

i have applied these setting on fox hound Psycho Mantis V2-XWLP7 with kernal Siyah-v3.2.4 on my SGS2

will report back after checking
[Galaxy S II General] ronaldo9_r9:
Thanks for posting amazing config. I have question new voltage control does not have gpu & charging tab whats alternative for that?

I am using Turbey gingerbread rom and n.e.a.k kernal 4.4.2
[Galaxy S II General] CamoGeko:
Yeah you can try, I havent tested these exact settings on that kernel yet.

If something starts to go wrong, post here and I will reply with some preliminary settings I'm using now.

You need to download Extweaks app if you are using Siyah kernel, or NEAK configurator app if you're on NEAK.

Sent from my beastly GT-I9100, running the latest CM9 Nightly and using ICS Inverted Tapatalk 2. Boooya!!
[Galaxy S II General] Dima1400:
@geko95gek

Hello i#m useing the Paranoidrandroid v 1.0 from 21/05/12:

The kernel is siyah 3.2.4 .

Which settings you have on Extweak and Voltage Control.

I think thies is interesting for another people the use thies rom.

sorry for my bad english i'm from germany.

thanks.
[Galaxy S II General] waris_arsh:
charging voltage question

is there any disadvantage of increasing your charging voltages as per your configuration?
[Galaxy S II General] LegendZenify:
I presume you mean charging current?

The only charging current supported are 450mA and 650mA.

If you change the value of the charging current, they will default to one of those values in actual charging.

In other words, 650mA is the max value for the charging current, setting the value higher will result in nothing but placebo.

By default, 450mA is used for usb charging, while 650mA is for the wall charger.

It is possible to set the usb charging current to 650mA, but not recommended since it may damage the usb port (in cases whereby the usb port is only meant to output 500mA max)
[Galaxy S II General] waris_arsh:
as per given configuration screenshot(in post 1)

i have set my wall charge to 700ma

misc to 550ma

and usb to 500ma

is it fine?

does it include any risk over here?
[Galaxy S II General] LegendZenify:
I suppose there's no harm in that, the values will default to 450/650ma anyways.
[Galaxy S II General] ronaldo9_r9:
Guys used these settings on turkby v33 gingerbread rom and changed kernel to neak and very impressed with the results. I have used phone like i do normally just checking email, facebook etc. Do u think i can make it even better?
[Galaxy S II General] CamoGeko:
What was your display time?

Sent from my 80GB CyanogenMOD 9 + Siyah ICS powered beast. Booya!!
[Galaxy S II General] randomseasons:
Guys, I really appreciate topic owner's sharing, but as he said he made this work for 95% people so I bet most of u guys can still go farther. For e.g my undervolt is even lower than his it's 200 - 1200 with 800 850 950 1050 1175, i see, very low but still super smooth. I tested exclusively for my phone after reducing 25mah each frequency for a long time so this is the lowest of it, btw Im using 800mah for my 133mhz gpu, this is even too low :) I mean, u guys dont hesistate testing urself, u can be much better than u think
[Galaxy S II General] waris_arsh:
default configuration for GS2

i need default configuration values for SGS2

can anyone post it ?
[Galaxy S II General] CamoGeko:
The values vary for each device, if you're using Voltage Control then go to the app... press menu and remove boot settings. Then reboot your phone, wait 5 mins after it boots up and open the VC app again... go to the voltage tab and you will see your stock settings.
[Galaxy S II General] waris_arsh:
Battery timing

Note: m using Anker 1900 mah Battery

after applying this setting i have got improvement in display time

i was getting 24 hours + on heavy usage

yesterday i have installed Flyscreen

it seems that it is very power hungry app

this is what i got after Fly Screen app

i have played temple Run for about 20 minutes

n other games for 25 minutes

music play back for around 1 hour

15 minutes max voice call

50 to 80 sms

wifi on most of the time

3 email accounts configure

used instagram, facebook, twitter, Viber, Whatapp etc for about 15 to 25 minutes each

i dont understand why these app usage are not showing in battery status

well i am expecting more battery time with 1900mah one
[Galaxy S II General] CamoGeko:
Will post some SiyahKernel ICS settings today, keep eyes open. ;)

Sent from my 80GB CyanogenMOD 9 + Siyah ICS powered beast. Booya!!
[Galaxy S II General] anvikram:
Thanks for your informative post...Eagerly waiting for Siyah ICS settings...:cool:
[Galaxy S II General] hughfollett:
Great as always!! Thanks geko! How much juice did you get with this settings?

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] CamoGeko:
Not yet mate, I keep flashing a new CM9 nightly pretty much every day so it's hard to get a stable battery life reading. You're welcome to do it for me if you like :p
[Galaxy S II General] hughfollett:
Maybe I can provide you some results on ParanoiAndroid;) Currently testing Fluxi, but I'll make some tests!

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] CamoGeko:
This is what I have so far...

Looks to me like almost 7 hours screen on time, plus I've been running live wallpaper all this time as well. Not too bad if I may say so :D

Sent from my 80GB CyanogenMOD 9 + Siyah ICS powered beast. Booya!!
[Galaxy S II General] hughfollett:
Really good results!! Another battery cycle and I'll show my results with fluxi! But take in mind that I'm not as good as you in these things:p

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] waris_arsh:
Applying new setting on Siyah kernal wd fox hound rom

@geko95gek

i am using Fox hound rom with siyah kernal 3.2.4

and using the settings which u have posted in first post of this thread

now what i have to do for applying new setting?

have to remove the previous setting first?
[Galaxy S II General] CamoGeko:
Haha thanks mate, we can only be as good as our devices are. ;)

Ah ok, you should update to the latest SiyahKernel. Then boot up into your ROM and wait 5 mins. Then go into voltage control if you're still using that and remove boot settings. Then reboot your phone again.

Wait 5 mins then go to app manager and remove VC cache and date then uninstall it... reboot. After all this, follow the instructions on the previous page.

:)
[Galaxy S II General] baekwondo:
Geko, do you have any idea with ABYSS kernel's compatible I/O Scheduler and CPU GOVERNOR?

Ive managed to attain 1% drain standby in 8hours last May29,

but now i forgot the combination.

my bad.

all i remember is the "abyssplug" governor but i cant recall the scheduler.

(sorry to ask this on this thread, Abyss thread is closed up to now)

[Sent from my SII]
[Galaxy S II General] waris_arsh:
updated to latest Siyah kernal

please confirm that is these settings are for Fox hound rom as well?

does this include any risk ?

and do we have do apply all changed setting at once in Ex tweak ?

or we have to apply setting as soon as we change the value of any specific field in ex tweak?
[Galaxy S II General] hughfollett:
You can apply these settings on every rom, and if you follow geko's suggestions, you won't have any problem.. then of you want to test the settings one by one, save them one by one..

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] CamoGeko:
Hmm... have not been around Abyss kernel that much. Best you can do is test each of them out for a day or so with your preferred Governor.

It doesn't matter what ROM really, its the kernel that makes all the difference. You can apply those settings however you want. However, I typed them up after going from 1st screen to last. So do one screen then apply, move onto next screen.

Sent from my 80GB CyanogenMOD 9 + Siyah ICS powered beast. Booya!!
[Galaxy S II General] baekwondo:
Well, thats the only best thing that i could do. And i think im gonna start it tonight.

Thanks a lot.

Anyway the settings on first post is pretty cool, let me test that VOLTAGES too.

[Sent from my SII]
[Galaxy S II General] hughfollett:
Geko, how do you get your settings saved while upating to the latest cm9 nightly? There is a new build almost every day!!

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] CamoGeko:
The settings stay as they are in extweaks. All I do is flash the new CM9 nightly, wipe cache and dalvik cache. Then before rebooting I flash SiyahKernel and wipe caches again.

After that, reboot to system and voila. All settings stay as they are.

Sent from my 80GB CyanogenMOD 9 + Siyah ICS powered beast. Booya!!
[Galaxy S II General] hughfollett:
Ooooooh yes!! I haven't thought of flashing the new kernel before rebooting eheheh!!
[Galaxy S II General] waris_arsh:
applied all these settings

but its not stable in my case

my device got hang when it restart it

i have 100+ apps installed.

i have flash the kernal again but still its getting hang

after reinstalling the kernal these values are not reverting to stock

how to solve this

i think i have to reset the extweak profile from cwm recovery mode

right?
[Galaxy S II General] CamoGeko:
Haha, do it. Works fine for me everytime. :D

Yes you do, try each setting at a time to find out which one is causing the lockups. Most likely the CPU voltages -100mV isn't a good idea for your device. Try -75mV. If same happens try -50mV.

I will soon post another set of settings for those devices that can't take such extreme battery saving voltages. Hopefully tomorrow.
[Galaxy S II General] Steven6489:
Tested with the setting here..but unfortunately, the first time it hang during my alarm this morning..then I force shut down and on again..it hangs again when I open Facebook..

I have to reset back ExTweak setting and play again with different configuration when I got time..

Using Foxhoud Sniper Wolf + Siyah v3.2.6.4..
[Galaxy S II General] Jibreil:
NEW ExTweaks settings

I recommend to reduce the Undervolt down to -25mV as the phone hung at -100mV every time after reboot.
[Galaxy S II General] Xelstyle:
Well this is news to me. Is VC no longer necessary with exTweak?

Sent from my GT-I9100M using Xparent Cyan Tapatalk 2
[Galaxy S II General] ole12:
Not really, if you want to set specific voltage to each step then you need VC. if you have AOPK ROM, then you can set voltage in ROM settings.
[Galaxy S II General] hughfollett:
Hey geko, what do you think? Today myfluxi released a new kernel, and after the reboot the battery drop from 40% to 11%..

Here are my settings:

Ondemand/sio AFTR+lpa 200-1200

1200(1125mv)-1100(1100mv)-1000(1050mv)-900(1000mv)-800(975mv)-700(925mv)-600(950mv)-500(925mv)-400(875mv)-300(850mv)-200(825mv)

Others are stock..

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] DJBoxer:
thanks for this setup geko95gek which u posted @850 works amazing well on criskelo v11 and is really smooth and lagfree ive not tested it with gaming only basics like gmail internet calling message etc ohh and music player oh first try after flashing this rom i instantly applied your settings so far i got 18hrs at 46% im surely it will improve even more once it has had a better charge so again thanks for this.
[Galaxy S II General] CamoGeko:
The battery drop is normal, it happens after flashing new kernels.

Just wait and use your phone normally and the battery sensor will soon return to normal.

That's great to hear mate, sounds like it's working just as expected. Great smoothness and even greater battery life. :D

Remember, share your success with others and link them to post 850. So they can get the same benefits you do.
[Galaxy S II General] ole12:
I tried your settings mate. First thing I noticed was battery drained only 1% overnight. stock settings it was about 8% overnight. Cool :-D
[Galaxy S II General] hughfollett:
Hi geko! I'm trying your eXtweaks settings, but my phone freezes after reboot... Tried with less uv(-75mV) but when I was downloading an app from the market it rebooted.. What should I do? However, I'll get a battery cycle with stock settings.. Oh, I'm on the latest Paranoid.
[Galaxy S II General] CamoGeko:
Ok, set CPU Undervolting to -50mV.

GPU Settings as follows:

40Mhz - 800mV

133Mhz - 850mV

267Mhz - 950mV

Try again. ;)

I'm gonna be posting some more relaxed settings in post 850 a bit later one, for those who can't accept too much GPU undervolting.
[Galaxy S II General] hughfollett:
Thanks! You are great, as always;)
[Galaxy S II General] noonecanhide:
can't get UV stable... phone freezes sometimes and does a warm reboot (hangs, than bootanimations without SGS2 logo).

now i am at -25mv UV for the cpu and it seems to work. but i am not sure, if the crashes are related to UV, the last_kmsg looks like a problem with the siyah kernel itself (latest version)

...
<4>[ 3044.334105] CPU1: Booted secondary processor
<6>[ 3044.335822] Switched to NOHz mode on CPU #1
<3>[ 3044.567769] [TSP] Dn[0]
<3>[ 3044.957165] [TSP] Up[0]
<3>[ 3045.805437] [TSP] Dn[0]
<3>[ 3045.899310] [TSP] Up[0]
<6>[ 3047.127521] sec-battery sec-battery: sec_bat_check_temper: recovery count = 0
<6>[ 3047.128881] sec,battery sec-battery: sec_bat_check_temper: temp=280, adc=905
<6>[ 3047.129191] sec-battery sec-battery: sec_bat_charging_time_management: charging_start_time has never been used since initializing
<6>[ 3047.129557] max8922-charger max8922-charger: max8922_is_charging: charging state = 0x3
<6>[ 3047.129851] sec-battery sec-battery: soc(59), vfocv(3847), vcell(3771), temp(28), charging(2), health(1), chg_adc(0)
<3>[ 3047.142216] [TSP] Dn[0]
<1>[ 3047.144282] Unable to handle kernel NULL pointer dereference at virtual address 00000000
<1>[ 3047.144379] Unable to handle kernel paging request at virtual address bcf55670
Ibl: pbl_read_emmc441() read 8k
Ibl: pbl_read_emmc441() read 96k
Ibl: pbl_read_emmc441() read download info
Ibl: pbl_read_emmc441() endop
Ibl: jump() verify_binary_integrity...ok
Ibl: jump() jump!!!

Welcome to Samsung Primitive Bootloader.
build time: Dec 8 2011 19:22:45
current time: 9d/8/5 29:1c:50
...
[Galaxy S II General] hughfollett:
Have you tried to set higher voltages for the GPU and maybe an uv to -50mV?? Geko said that maybe someone can't stand those GPU settings ..

Sent from my hybrid SII with the power of ParanoidAndroid and Fluxi kernel
[Galaxy S II General] baekwondo:
Thats it! I only got 3% drain during standby with wanamlite11.7+Abyss3.2+MagicConfig

finally!!!

Thanks mate.

[Sent from my S2]
[Galaxy S II General] CamoGeko:
No worries mate, what exact settings are you using?

EDIT: As promised guys, I posted some less aggressive settings in p850 here:

http://xdaforums.com/showpost.php?p=26755476&postcount=850
[Galaxy S II General] hughfollett:
This time it seems to be working! However, I have to uv only by 50mV.. While on fluxi I had a more extreme uv..

Sent from my hybrid SII with the power of ParanoidAndroid and Siyah kernel
[Galaxy S II General] Goku80:
kernels are not the same. hence why on one you can extreme uv were on others you can not. just choose the one you feel gives you the best settings and gives you the best UV as possible;). that way you save on battery
[Galaxy S II General] CamoGeko:
SiyahKernel v3.2.8 is out!!

http://www.gokhanmoral.com/gm/2012/06/03/siyahkernel-v3-2-8/
[Galaxy S II General] baekwondo:
ive got 3% drain in 8hours standby last night.

settings:

sio+abyssplug

200min-800max

the voltages settings at firstpost

114mhz-200mhz | 850mV-950mV

[Sent from my S2]
[Galaxy S II General] Brecht82:
Hi,

I've just found your thread and applied your suggessted setting, but with the first option of settings has got frozen my phone after 10 seconds. And then I changed them for in the second option of setting and tada :) it's not frozen at least, but I would like to see what I can gain with those settings in battery life. I was really happy even without these settings, but the better is always better. So I really hope so I can get a few extra hours! ;)

System:

AsNet MIUI 2.5.25 + Siyah 3.2.7.2
[Galaxy S II General] hughfollett:
I had the same problem.. now with the less aggressive settings, it's working really good.. It depends also on the kernel: when I was o fluxi, i got a way more extreme uv, with Siyah my phone freezes on the first configuration that gelo provided!

I really can't understand from what I'm sending this.. That's because I'm on ParanoidAndroid now.. ;)
[Galaxy S II General] Phistachio:
@Geko

So, regarding that question at the Siyah thread, is a -100mV UV safe? It's less than needed so it won't damage hardware...

And about the GPU, is 850/900/950 UV a good choice?

Also, does UV'ing reduce performance?

Thanks! :)
[Galaxy S II General] CamoGeko:
Hi man, it is safe for some SGS2s and can cause freezes/reboots on others. Since no SGS2 device is exactly the same, best way to find out is just to test.

I have provided some extreme and less aggressive values at post 850.

My settings do no reduce performance but save a decent amount of battery as you can see for yourself just by reading some of this thread.
[Galaxy S II General] Phistachio:
Thanks! It may freeze or reboot, but it does no temp or long term damage to the hardware, right?
[Galaxy S II General] CamoGeko:
No, kernel devs wont allow that.

I've been undervolting heavily on this device for about a year, and haven't noticed any adverse effects at all.
[Galaxy S II General] Phistachio:
Alright!

I'm also a PC OC'er and I know that undervolting may bring slight problems, but far from what OC/OV will :)

---------- Post added at 11:47 PM ---------- Previous post was at 11:19 PM ----------

My experience :

Undervolted CPU to -100mV, GPU to 800/850/900 and epic freeze all over :p

Staying at -50mV at the CPU and 900/950/1000mV at the GPU ;)
[Galaxy S II General] CamoGeko:
Hmm... ok, what GPU frequencies are you using?
[Galaxy S II General] Phistachio:
66/133/267, always stable, and a good balance in performance and battery IMO :)
[Galaxy S II General] CamoGeko:
Ah alright, for you its the best balance mate coz your phone wont take any lower voltages lol
[Galaxy S II General] Phistachio:
It's weird though...

I got 4 soft bricks/bootloops today... :o And I panic'd in each one of them LOL.
[Galaxy S II General] Phistachio:
I moved to the stock CM9 kernel now. I just got ANOTHER soft brick and flood of FCs.

Does undervolting the CPU -50mV and the GPU -50/100/50 mV really give a noticeable boost vs. the stock settings in the CM9 kernel? If so, I'll re-flash, but this time I'll flash 3.2.7.2.
[Galaxy S II General] mredfern79:
Gokhan said the soft bricking was probably caused by heavy gpu uv. I would suggest not uv'ing at all your gpu. And I'm sure you won't have any more soft bricking.
[Galaxy S II General] hughfollett:
I have the same problem... Are you trying the "less extreme settings "? If I remember well, gokhan said that he would have not supported a heavy uv, with so it really depends on your phone!! For example, on fluxi I had a really extreme uv, now only -50mV... But the battery life seems good..

I really can't understand from what I'm sending this.. That's because I'm on ParanoidAndroid now.. ;)
[Galaxy S II General] CamoGeko:
FC's wouldn't necessarily be caused by low GPU voltages.

You should have updated your Siyah version to 3.2.8.2, many encountered issues with 3.2.8.
[Galaxy S II General] Phistachio:
Yeah it was due to the GPU UV... But it was also related to a weird kernel issue/bug.

Already moved to 3.2.8.2 ;) It's stable now! -50mV CPU and 900/950/1000mV GPU at 66/100/267MHz