yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] hausmanis:
Awesome news, i will loose all my hair from scratching my head tho....witch one to choose ? :P
[Galaxy S II Original Android Development] bragon2010:
I continue with the same problema. SetCPU does not remember the governor and the voltage of the CPU :S

I tried reinstalling SetCPU and clearing app data. Also i delete the file from /data/.siyah but it is the same.

I am runnin v1.7.8rc1.
[Galaxy S II Original Android Development] Denwa:
Any suggested settings when using 1.78rc1 with MHL video out?

If using oc daemon and smartassv2 governor, should I set sleep state max cpu to the same ss wake state max cpu, since smartass handes this well enough on it's own?
[Galaxy S II Original Android Development] hausmanis:
btw anyone know witch is the best govenor for battery life ?

Conservative ? interactiveX ? smartassV2 ? or other ?
[Galaxy S II Original Android Development] gtizon:
So with that said, what is the best to use? I am on 1.7.7 right now and everything works well. Or should I just stay with the version.I have right now?

Sent From

GALAXY S2

VR 3.0 on Siyah Kernel V1.7.7
[Galaxy S II Original Android Development] x625:
hi

when i try to flash kernel v1.7.8rc1.zip from CWM manager in Boh!AntoniomistrettA 2.3.5 rom i get an error mesg "no zImage was found." i try to redownload kernel but still have the problem. the file size is correct and also has zImage file in the zip file . any solution?

tanx
[Galaxy S II Original Android Development] spradling:
:D

[REF] Quasar kernel governors and I/O schedulers manual:

http://xdaforums.com/showthread.php?t=1242323
[Galaxy S II Original Android Development] cez10:
Was using the beta 5 for couple hours everything was great battery life as well n then phone didn't wake up n battery dropped by like 20%... with my stable voltages, back to stock now.....
[Galaxy S II Original Android Development] theory_87:
Did the kernel incorporate arighi cpufreq patch?
[Galaxy S II Original Android Development] ebliss:
I have device freezing on first boot after flashing. After rebooting, seems ok.

However, when using smartassv2, when I look at the 1st tab of SetCPU, I see the freq of the device swinging up and down wildly. I am not touching the screen or anything, just screen on and idling. No background task running either. If I touch the screen, the freq will be min 1000 and occasionally going up to 1200.

InteractiveX is quite similar, but not swing as wildly.

OndemandX is tame, doesn't swing at all when just screen on and idling.
[Galaxy S II Original Android Development] eozoon:
Had two reboots since flashing v1.7.8rc1.

Once when I loaded TitaniumBackup (just loaded it, haven't started doing anything yet) while using SmartAssV2, once when I opened 3G Watchdog for the first time after installing while using InteractiveX.

Not sure sure the actual apps I run has anything to do with it or is it just coincidence, since I couldn't reproduce the reboot when I open them again afterwards.

It's otherwise nice and smooth, Thanks :)

I'm giving it a few more hour's try before deciding whether to go back to 1.7.7 or not.
[Galaxy S II Original Android Development] hatori:
I found a few random freeze on 1.7.8 RC1. However, 1.7.7 works great.
[Galaxy S II Original Android Development] iakovl:
Have the same problem
[Galaxy S II Original Android Development] iamsmallpang:
V1.7.8 rc1 usb connected to the computer , then unplugged to the computer . my GS2 will reboot , i tested five times and it had happened that situation .

LeoMar 75 2.7.1 add v1.7.8rc1
[Galaxy S II Original Android Development] andywright1982:
sorry to ask but can somebody please post a list of all stock voltages for this kernel

Many thanks
[Galaxy S II Original Android Development] lolamok:
running V1.7.8 rc1 for almost 2 hrs plus,everything smooth n haven meet any problems.

btw i uv 100mhz&200mhz @760mv.
[Galaxy S II Original Android Development] cescof:
I've same rom and same kernel with undervolt and smartass2 but i've try to connect and disconnect 3 times without any problem

Regards
[Galaxy S II Original Android Development] xsillian:
Lol running rc1 and got a lockscreen when my alarm went off this morning... #%&* irritating! Besides that it's running smooth.

Now i have to find out what is causing the lockscreen.... Alarm, deep sleep, offscreen profile.... I was on smartassv2, but gonna try ondemand now.

send from my criskelorommed samsung galaxy s2..... ;)
[Galaxy S II Original Android Development] poochewer:
On what planet was that?:rolleyes:
[Galaxy S II Original Android Development] stylez:
Obviously another user who never touches phone totally irrelevant information apu screen on is the time wanted not in draw time :D

Sent from the valley of the shadows....
[Galaxy S II Original Android Development] CamoGeko:
Screen was probably on twice, three times at most lol

Logged using an SGS2 type droid while floating in CM9 quadrant...
[Galaxy S II Original Android Development] sianzb0i:
had a 6% drain on a 12hr standby today. didnt touch phone as usual.

I untervolted the CPU until even the max speed it runs (800mhz) it will never hit 1V.

battery was at 31 degress thou.

I went to see battery usage but saw cell standby taking up 41% and phone idle 30%, display was 26% and 2 other android OS at 2% each.

I then checked settings>application>running services and realised facebook had a service running though i disabled all notifications. google had quite afew services too although i did not sync or enable sync

I know i should use betterbatterystats but its quite expensive

---------- Post added at 07:53 PM ---------- Previous post was at 07:44 PM ----------

i just read through the forum and i wanted to try out the ondemandx govonor but i cannot find it in setCPU nor voltage control.

Why is that so?
[Galaxy S II Original Android Development] pikachu01:
BetterBatteryStats is free for XDA members:

http://xdaforums.com/showthread.php?t=1179809

Also, OndemandX's features is already integrated to the Ondemand governor in Siyah.
[Galaxy S II Original Android Development] XDA mark:
2.6.9 was also top notch. I eventually went back to .7, but the difference between those two is minimal. I didn't like that .9 had the battery top off stuff put to 100mAh (with all the horror comments of some people that it isn't good for you battery and stuff... I know I know it's ok, no need to explain again:p)
[Galaxy S II Original Android Development] sianzb0i:
thanks alot bro! or ah bang haha.

so basically ondemand on siyah is actually ondemandx? meaning the original ondemand has been eliminated?
[Galaxy S II Original Android Development] PedroMRP:
gokhanmoral merged the two schedulers. Ondemand is the original ondemand but with the sleep profile of the ondemandx.
[Galaxy S II Original Android Development] sianzb0i:
I see. Thanks!

However i realised when i am in ondemand my whatsapp messages do not come in on time as compared to when i was in either smartassV2 or lulzactive. Network state is also jumping between H/H+ and 3G quite often. Dunno which service is sending something out.
[Galaxy S II Original Android Development] CamoGeko:
Hmm... service is switching either because you're in a bad signal area or the modem you're using is bad at keeping a decent signal. The governor/scheduler shouldn't have any adverse effects on how your whatsapp messages come through.

Logged using an SGS2 type droid while floating in CM9 quadrant...
[Galaxy S II Original Android Development] sianzb0i:
My area has decent (i would say more than decent) signal. Bars are always full (unless bars are lying). I have had so many phones and they are always full and have good speeds. my modem is DXKL1.

And when the network state jumps it shows there are data going in and out. but i searched all my services and other than google services i dun see any app service running or needs to by sync-ed. My accounts are all set to not sync.

I will try to minitor in another area again.

Tried all governor (smartassV2, lulzactive, ondemand) and battery still draining fast. I am starting to suspect its the modem. But i dunno what other modem to flash already as this is for my region.
[Galaxy S II Original Android Development] shawnaye:
hey bro, fellow singaporean like yourself, i'm on DXKL1 modem as well as i find it the most stable for our country's sucky network.

your whatsapp has to be synced, under accounts and sync, background should be on, but auto sync need not. maybe that's whats affecting your messages, DEFINITELY NOT THE SCHEDULER.
[Galaxy S II Original Android Development] o0boiboi0o:
+1. me too, fellow sporean. using dxkl1. its pretty much stable, as compared to other modems like xxkl1 or kh3 (i did tried them myself before).

as for apps like whatsapp, i also did not set to synced and my background is off. don't think my msg got affected (or maybe i nv really observed) :D
[Galaxy S II Original Android Development] poochewer:
All those "horror comments" were from people who had absolutely no understanding of battery technology! I think it was quite a reasonable idea by gokh, which was definately worth a try just to see the outcome.

As I said in an earlier post,that charging modification was not going to make the world blow up, and if it did, you simply pay a lousy $30 for a new batt!

:rolleyes:
[Galaxy S II Original Android Development] Entropy512:
It is obvious that YOU do not understand battery technology. It's a well-known and documented fact that "topping off" lithium ion batteries is very bad for long-term capacity retention - halving termination current will cause SIGNIFICANT long-term wear.

On top of this is the fact that Samsung devices count CPU and screen power usage against the charge current limits - which leads to termination happening later than you would expect it, and also a risk of never terminating if the termination current threshold is too low. From http://www.powerstream.com/li.htm - "It is important to note that trickle charging is not acceptable for lithium batteries. The Li-ion chemistry cannot accept an overcharge without causing damage to the cell, possibly plating out lithium metal and becoming hazardous."

No it won't cause your battery to explode in a giant fireball - but it WILL cause significant wear of the battery over a few months.
[Galaxy S II Original Android Development] poochewer:
It is obvious also that you cannot afford $30 for a new battery!

I'm not an expert but your statement about "wear of battery over a few months" is rediculous. Every battery on earth is gonna wear over a few months!

Buy a new one! or has your country's cause of the worlds economic demise got you broke?
[Galaxy S II Original Android Development] Pfeffernuss:
So, using 2.6.9 won't kill my battery will it? Rather fond of that version :-)

Like it better than 2.6.12, battery drain wise that is. Haven't really tried version 11 yet though.
[Galaxy S II Original Android Development] poochewer:
I would not worry my friend.There are alot of people out there using that version and I havnt read about anyone with ruined batteries.:)
[Galaxy S II Original Android Development] XDA mark:
I agree that people shouldn't be to much afraid to use the version with the top off set to 100mAh (siyah versions .9 till .11). Like told above, this might results in a little bit more battery now (the battery charges a little, little bit more), but in a couple lf months the capacity will decrease at a harder rate.

It's all long term talk here. It's just a battery indeed, though I dont like how people talk about money. For some people, 30 euro might be significant.
[Galaxy S II Original Android Development] poochewer:
So true my friend. Well said. I suppose it's pretty hard these days not to talk about money (or worry about it)

Anyway I hope you have a nice day day. Take care.:)
[Galaxy S II Original Android Development] tolis626:
First off,you could do with being less ironic here. :)

Secondly,Entropy512 is right.Not only because you'll kill the battery sooner(much sooner in fact),but because it's just not worth it.Lithium batteries,unlike nickel-cadmium batteries,get damaged every time you overcharge them.And overcharging doesn't mean Gokhan's modification,but charging the battery to 100% and leaving it on the charger also meets the criteria.Tell me,are some extra minutes at best (a single digit number of minutes most likely) worth it?I don't think so.

So right,the world won't explode and,while 30€ might be much for many people,it's logical that you don't think it's much compared to a 500€ phone.But I could spend this money better than just throwing it for a battery I wouldn't have needed if I just treated my current one as I should.
[Galaxy S II Original Android Development] eric-filth:
I agree with you. People only say about battery i resolve my problem buying new battery. Now i dont have problem any more.
[Galaxy S II Original Android Development] poochewer:
I really think that one of the main problems in the world today is that nowone seems to "laterally think" anymore. When you think about it there are always at least 2 methods to any problem, and my method is just as equal as your method of severe caution, dont you think so?

Gokhan seemed to have thought so when he implemented those changes.

As I said I prefered to take those chances (extremely slim chances) of losing maybe at worst 2 months life of a batt.

And if and when that battery(one that I paid for, not you), collapsed, I would then simply buy another one.

We all have different ways of doing things. Thats what makes the world go round.

I will now go and take my medication and leave you all alone! LOL :D
[Galaxy S II Original Android Development] Entropy512:
No, every battery on earth is not going to wear over months to nearly the same rate as one that's getting overcharged.

I'm trying to find information on the specific affects of overcharging, however a related statistic:

At room temperature, a lithium-ion battery stored at 40% state of charge will lose 4% of its capacity over that year (this is why any new device usually has the battery only charged to 40-60%)

At room temperature, a battery stored at 100% state of charge will lose 20% of its capacity - overcharging will hasten this.

Also, damaging batteries with a poor attitude of "I can just buy a new one" like what you suggest is simply wasteful.

The big issue here is that in many devices such as this one, CPU and screen power are considered as part of the charge current measurement, and so device usage could inhibit proper charging if the current limit for terminating charge is too low.
[Galaxy S II Original Android Development] Pfeffernuss:
So, long story short, quit using 2.6.9 for the sake of battery longevity?
[Galaxy S II Original Android Development] tolis626:
Yeah,whatever.Just for the record,I charge my battery every night to 100%.I just want it to last till the end of the day.But not everyone is you and me.So just respect other's views on the matter.It's not a matter of extreme caution.Not abusing your battery is the same as not abusing your phone.Do you throw your phone around like your keys just because you can buy a new one?If yes,then obviously you have money that I and most here don't have.

Anyway,let it be.We are arguing over bull**** here.

Not if you don't leave your phone on the charger for many hours.Charging for logical time periods will eventually save your battery. :)
[Galaxy S II Original Android Development] XDA mark:
Well, I used it for a week I think. I wouldn't use it for months though...

If you want to use 2.6.9, use .7 instead! The difference between the two version is minimal!

Btw, about people leaving their phone in the charger after it reaches 100%... as good as everybody I know charges his phone at night while sleeping. So the phone will spend some time fully charged and still plugged in
[Galaxy S II Original Android Development] poochewer:
I hope you don't find out how much toilet paper I use!

I'm certainly a wasteful sole!

Hey on a serious note I appreciate the fact that you are researching info about battery technology, for my education. I am appreciative, but I no longer use that version of kernel myself, and I am happy with what I am using now. Thanks.:)
[Galaxy S II Original Android Development] Mulholland Drive:
I am glad there are informative posts like this by reputable members of the community. I am just a geek from China who can use these witty stuff to talk about with other android users here and spread the knowledge.

Trust me, it's not about the 30 dollars or any amount of the money. The battery could be 5 dollars, still I wouldn't use "unhealthy methods", relatively speaking of course.

One of the attractive aspect to use android OS　for me is to connect and talk about it with avid users from all around the world. No matter what age of demographic group represented.

However, it is also fairly standard to run into somewhat not so friendly posters, whose comments are totally not constructive and often times offensive to other users. I would feel ashamed if my native language is English and have more misspells than some people have apps on their phones.

Btw, great kernel. I will stick to .7 for now.(disregard my signature, too lazy to update) Have a nice day all. ;)
[Galaxy S II Original Android Development] AndreiLux:
To anybody else interested; the Exynos 4210 datasheet was finally released by Samsung: http://www.samsung.com/global/busin...t/Pulbicmanual_Exynos_4_Dual_45nm_Ver00-2.pdf

Edit: Just went over fast over the whole thing, and the only interesting thing is the CMU chapter. Don't think we can gain much from it.
[Galaxy S II Original Android Development] sianzb0i:
Hi bro, i actually unsynced everything since last night and whatsapp still works fine. So does everything else.

Previously everything was synced on KL1 as well as KH3. Things were getting worst in KH3 which is why i decided to come to the latest version.

The syncing in account is just for contacts. Tested it already.
[Galaxy S II Original Android Development] harise100:
The kernel runs fine, but I have to use BFQ/Ondemand to be stable.

My phone is very picky regarding these things.
[Galaxy S II Original Android Development] CamoGeko:
Tried MagicConfig?

Logged using an SGS2 type droid while floating in CM9 quadrant...
[Galaxy S II Original Android Development] Arugi:
SiyahKernel v2.6.12 can't use HW decode video in "MX Video" app

but SiyahKernel v2.6.11 don't have problem :confused:
[Galaxy S II Original Android Development] Entropy512:
Looks identical to what was in AdamOutler's Galaxy S II Hack Pack a few months ago... It isn't particularly useful. Half the clocks are undocumented (such as "what the hell are COREM0 and COREM1?" - and it looks like it was primarily written for an older Exynos variant that tops out at 1.0 GHz.
[Galaxy S II Original Android Development] CamoGeko:
Hmm...it must be the same chip as ours. Since I can remember Sammy hastily raising the stock freq limit to 1.2Ghz shortly before the SGS2 was put into production.

Logged using an SGS2 type droid while floating in CM9 quadrant...
[Galaxy S II Original Android Development] minidou-77:
You need to set AFTR to 2 via a script

Or use Tegrak 2nd core app and set to always use both of them
[Galaxy S II Original Android Development] Entropy512:
Yup... I'm honestly a bit disappointed that GM committed the cpuidle patch when he as about to go away for an extended period AND I had warned him that there had been some trouble reports regarding it...

I've had a patch available since the 7th that fixes this issue but GM is away for the time being.
[Galaxy S II Original Android Development] rodries:
Are you talking about this 2 commits?

https://github.com/Entropy512/linux_kernel_sgh-i777/commit/35a40e7ce05dd9d8da12729025c099f176991402

https://github.com/Entropy512/linux_kernel_sgh-i777/commit/bd3f8ba0868ddd9344fd5fbce4da3795d7c48613

With siyah sources anyone (you? :) ) can compile it and upload somewhere meanwhile gokhan is busy
[Galaxy S II Original Android Development] s2dh:
I have had to go back to a stock Kernel, because the Sky Go App will not work with Siyah...

Is there anything that can be done to allow Sky Go to work on this Kernel.
[Galaxy S II Original Android Development] xsycox:
Is that script somewhere as CWM script ready to flash per CWM Recovery?

That would help a lot, because I do not want to install another app just for that purpose.
[Galaxy S II Original Android Development] hausmanis:
R. I. På SiyahKernel? ;(
[Galaxy S II Original Android Development] Vaedryn:
Gokgan is Busy this month, he has talk this with the last update.

SGS II Cyanogen Mod 9 Tapatalk
[Galaxy S II Original Android Development] Entropy512:
Yup, those are the ones. :)
[Galaxy S II Original Android Development] AndreiLux:
He got married and is on his honeymoon. Expect him back in 2-3 weeks.
[Galaxy S II Original Android Development] hausmanis:
Ah ok well thats Great, both that he is gonna be back and the meriage ;)
[Galaxy S II Original Android Development] eric-filth:
This is good. Very good he will back with all strenght.

Enviado do meu Galaxy S2 usando o Tapatalk
[Galaxy S II Original Android Development] bunnybash:
Pretty sure no man comes back from his honeymoon "full strength"!!! :D
[Galaxy S II Original Android Development] tsubus:
So, I've tried again. This time I wiped everything, including internal and external SD's. Then, I've installed the latest CM7 nightly build, booted the phone and everything works. I then went back to recovery and flashed Siyah, wiped cache and dalvik, and rebooted.

Phone still won't boot. Any help?
[Galaxy S II Original Android Development] sierrafox:
thanks for that info entropy. very useful. i just use a tasker script to set AFTR to 2 when i'm watching videos on 2.6.12. however, i'm still finding battery life was excellent on 2.6.9 (even compared to 2.6.7).i've been following your posts regarding lithium batteries was wondering if there's any way i can disable the trickle charging parameters introduced by gokhan via an init.d script? not sure if it's even possible but it doesn't hurt to ask!

thanks again for the interesting reading!
[Galaxy S II Original Android Development] coloxim:
so the problem is only when the screen is off?when the screen is on i can use 100 mhz?
[Galaxy S II Original Android Development] Entropy512:
No, I am fairly certain under nearly all circumstances, 100 MHz will not save any power compared to 200... 100 MHz doesn't cause "problems" - it's just not worth it and in fact is likely to do the exact opposite of what you think for power consumption.
[Galaxy S II Original Android Development] Evollution:
With Syiah 2.4.2 topo + and original Battery

http://s60.radikal.ru/i167/1202/4a/f28aa8af0e9b.jpg
[Galaxy S II Original Android Development] kobi63:
Little Off-Topic,

You guys need to remember that the device needs to serve you, not the other way.

you can leave it untouched for days and get couple of days free of charging it..

but think about it, what's the point of having such high end devices without using them?

10-13 hours are more than enough with use.. some people are addicted to the amount of days the device isn't charged
[Galaxy S II Original Android Development] droidphile:
Yes, stay away from 100 mhz.

1) Energetically efficient frequency, the sweet spot of frequency for Sgs2 is 200 mhz.

2) Given that the possible voltages that can be set for 100 and 200 mhz can not have a big gap between the values, it's not really worth using 100 mhz.

3) Calculating energy as joules per one billion cycles, 100 mhz accounted to 1W per Ghz and 200 mhz to 0.7W per Ghz. See this.

4) Same task can be performed by 200 mhz quicker and thus hit deep idle sooner than 100mhz.

Because of frist 3 reasons, we shouldn't be using 100 mhz during Screen-ON. Because of reason 4, we shouldn't be using 100 during Screen-OFF as well.

For
[Galaxy S II Original Android Development] ephraim:
What are the disadvantages if the two cores are always on? Except for high battery drain? Will it damage the chip?