yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] Vahidmoby:
Come On Guys..!!

DO CYCLE and Calibration befor posting here

i'm on K2-8 for 1 Hour and everythings perfect

with wifi on and Surfing net i lose 1% in every 5 minute in 1 hour i'm losing just 15% with Auto-Brightness

BUT i must Do Calibration and 1 or 2 cycle
[Galaxy S II Original Android Development] flute:
Me too. With k2-8 my phone won't go into deep sleep, so the drain is very fast. Going back to k2-5 on Leomar Rom

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[Galaxy S II Original Android Development] thanksgiving60:
no deep sleep for me either

please fix
[Galaxy S II Original Android Development] newHere:):
i have no problem with deep sleep ( k2-8 )
[Galaxy S II Original Android Development] dzontra11:
Deep damn sleep here...k2-8
[Galaxy S II Original Android Development] Vahidmoby:
No issue in Deep Sleep

guys please be patient;)
[Galaxy S II Original Android Development] KennyLegend:
No problem with deep sleep here either on k2-8
[Galaxy S II Original Android Development] Radikaal:
k2-7: 1% drop in 7hours with data on... and 93% deep sleep. best I ever had by far. and now a new version I have to try:p
[Galaxy S II Original Android Development] ringrover:
i think the best on is K2-1 it is the best in my opinion
[Galaxy S II Original Android Development] flute:
That's very strange.

Reverted to 2-5 and now my phone goes to deep sleep after around 30 sec. as usual.

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[Galaxy S II Original Android Development] thanksgiving60:
those have no problems with deep sleep, did you guys flash the CWM version?

i used the odin version and my phone cant enter deep sleep now
[Galaxy S II Original Android Development] yabosid:
I get plenty of deep sleep, I'm using k2-8 with cog 1.6.
[Galaxy S II Original Android Development] newHere:):
i flashed the Odin version and as i said, no problem...
[Galaxy S II Original Android Development] Vahidmoby:
yep i'm using CWM version
[Galaxy S II Original Android Development] marvinhemstock:
cm version here and phone is deep sleeping
[Galaxy S II Original Android Development] Steve46xda:
Can anyone link k2-5?!
[Galaxy S II Original Android Development] justbenice:
DAmn deep sleep here :) flash with CWM
[Galaxy S II Original Android Development] thanksgiving60:
yea maybe hardcore needs to check up on the odin version but im not sure if thats the problem though
[Galaxy S II Original Android Development] newHere:):
10 chars......
[Galaxy S II Original Android Development] Остап:
Nenamark2 - 50.6

Quadrant - 4562

Antutu - 4673

2-8.

Going to check battery life )))

Hardcore - good work !
[Galaxy S II Original Android Development] tkalli:
Flashed CWM version.

No problem with deep sleep.​
[Galaxy S II Original Android Development] Molitro:
Tried both CMW and Odin version, with several reboots and things... NO deep sleep for me.
[Galaxy S II Original Android Development] coolfire:
Try wiping cache partition & Dalvik cache, mate. K2-8 works perfect for me.
[Galaxy S II Original Android Development] ram3n:
In this case, try a dalvik + cache wipe. ;)
[Galaxy S II Original Android Development] flute:
Same for me... silly thing really strange.

Maybe need to wipe dalvik cache and phone cache as well before flashing?

Did you guys perform clearing cache before installing?

Edit: you guys are too fast for me!

Post the same question here a minute ago... ;-)

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[Galaxy S II Original Android Development] Seifer1975:
Did you try running betterbatteryStats to see what's keeping your phone awake?
[Galaxy S II Original Android Development] thanksgiving60:
yea i just flashed the cwm version and wiped both, still no deep sleep

no worries though, been wanting to revert back to k2-5, seems like the perfect time right now :D
[Galaxy S II Original Android Development] Molitro:
Done that.

I'm right now going to flash KI4 (I was on KI3) and try again.
[Galaxy S II Original Android Development] Steve46xda:
Please...can someone give a link of s2-5?!
[Galaxy S II Original Android Development] flute:
Is not matter of apps keeping phone awake, as the k2-5 works perfectly while the k 2-8 not.

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[Galaxy S II Original Android Development] coolfire:
LOL...

I always do that as good practice. :D
[Galaxy S II Original Android Development] thanksgiving60:
http://www.multiupload.com/JQJCJMCS0H

K2-5

Flash via CWM or recovery

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

Odin version

http://www.multiupload.com/C83CJ5PY50
[Galaxy S II Original Android Development] flute:
Edit/ look at the previous post...

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[Galaxy S II Original Android Development] oyebto:
updated to K2-8. phone is able to sleep well. =) will continue to monitor battery life though
[Galaxy S II Original Android Development] shawnaye:
no problems with k2-8 whatsoever , flash .tar via CWM app.

phone sleeping well, smooth as liquid performance.
[Galaxy S II Original Android Development] Steve46xda:
Thank you!!
[Galaxy S II Original Android Development] byobodybag:
Not sure what others are experiencing, but so far K2-8 is sleeping fine on my S2.
[Galaxy S II Original Android Development] miisterlim:
k2-8 doesn't seem to want to go to sleep no matter what I try.

Back to k2-5 for me, phone loves this one.
[Galaxy S II Original Android Development] Molitro:
Ok, I flashed KI4, and in the first minutes didn't seem to sleep but now it's working good.
[Galaxy S II Original Android Development] vuidoi:
When i Flash speedmod-kernel-s2-k2-8-CWM.zip, CRT effeck is Disable. Please Help Thank
[Galaxy S II Original Android Development] Radikaal:
k2-8 no deep sleep issue here, 97% when leaving phone for 15min with 3g.
[Galaxy S II Original Android Development] lynx2k50:
Hardcore what do you think of this:

https://github.com/Entropy512/linux_kernel_sgh-i777/commit/fc9eb85807302583259e27013ed184a43107bb67

Best kernel for the SGS2.

Thanks.
[Galaxy S II Original Android Development] hardcore:
If your phone seems like it can't go to deep sleep, try rebooting it. Then let it run for a while, about half an hour or so (there are processes running after boot that take a while to finish).

If it is still not going to deep sleep then install betterbatterystats and check what app is holding the wakelock.

It's not a kernel problem.
[Galaxy S II Original Android Development] Остап:
Hardcore

Do u plan to support of Tegrak Touchmove ? https://market.android.com/details?id=com.tegrak.touchmove
[Galaxy S II Original Android Development] warfanax:
I am running K2-7 and trying to install cwm K2-8 but everytime i try it says "bad, installation aborted"

Why the hell this is happenning? I installed K2-7 through cwm without any problems.

Do u have any idea?
[Galaxy S II Original Android Development] umair9001:
redownload file n try again..
[Galaxy S II Original Android Development] elbasso:
With k2-7 my battery drained in just 8 hours with only 45 minutes of use. I've never experienced this much drain with any kernels from Hardcore.
[Galaxy S II Original Android Development] ram3n:
Never had such battery drain with k2-6 or 7.

Maybe it's the time for battery calibration ?

How ? Give a look at my signature. :D
[Galaxy S II Original Android Development] formidabilus:
Go to Deluxe Settings app, scroll down to Miscellaneous and then check CRT TV ON/OFF effect, reboot, done.
[Galaxy S II Original Android Development] Igor 3:
Nice, thats just what I need, please hardcore take i look :D
[Galaxy S II Original Android Development] tonysac:
+11111111

Save water..drink beer...
[Galaxy S II Original Android Development] Radikaal:
weird, after that time and use I don't lose more then 15% with k2 7:) as I posted with screens, 1% / 7hours with 3g and screen off, and when using phone it drains less then many uv kernels. (checked with tests.) so either you should try again with cache&dalvik wipe and see so you don't have something preventing deepsleep with betterbatterystats.
[Galaxy S II Original Android Development] crash_194:
Hi guys I was wondering if someone would be so kind as to give a quick run down of the info betterbatterystats gives please.

My phone never goes in to deep sleep but at the same time there doesn't appear to be anything stopping it?

Kind regards
[Galaxy S II Original Android Development] ephraim:
Try wiping cache and dalvik cache.. It worked for me.. And also i don't think deep sleep is enabled when charging so don't expect deep sleep overnight when your phone is connected to a charger..
[Galaxy S II Original Android Development] formidabilus:
How can you tell if your phone goes into deep sleep? From CPU Stats? If this is true, my phone never turns into deep sleep neither.
[Galaxy S II Original Android Development] :
I use CpuSPY for this as it records deep sleep; I'm not sure about CPU Stats.

Monitor deep sleep + wakelocks (via BetterBatteryStats). 99.9% chance you'll discover the cause and solve the issue via a setting or two.

Just DL'd K2-8, flashing imminently.
[Galaxy S II Original Android Development] fenomeno83:
hardcore, why don't add a version with undervolting support? kernel has a great battery life, but with undervolting support this battery life can increase!

I don't think that adding this support will affect battery life, right?..and for init.d (so, don't use setcpu to set undervolting)?

ps: undervolting support, not already undervolted
[Galaxy S II Original Android Development] formidabilus:
I've already flashed k2-8. How fast should the CPU start to deep sleep after you let the phone unused?
[Galaxy S II Original Android Development] BrandoHD:
Hardcore has said that he does not, and has no plans to implement the above

Or did you even bother to read his first post, as the answer lies in the fourth line

It is what it is
[Galaxy S II Original Android Development] newHere:):
immediately...

in 2-3 seconds after the screen turns off
[Galaxy S II Original Android Development] :
Mine enters deep sleep very quickly, I haven't flashed this kernel yet though, doing a b/u right now. I'll let others address this kernel specifically for that reason, I don't want to take up real estate here.

With my present set up, if I let the phone sit for 2 hours, >90% (at a minimum) of that time will be deep sleep, I've used BetterBatteryStats to eliminate most/all apps/settings that prevent deep sleep.
[Galaxy S II Original Android Development] formidabilus:
:( Mine doesn't go to deep sleep. I can't figure out why and I don't know how to use betterbatterystats.
[Galaxy S II Original Android Development] :
There's a thread for that ;)

Better Battery Stats. Free XDA edition.
[Galaxy S II Original Android Development] scary_master:
no deep sleep here with k2-8 on checkrom revolution 1.0.

i ve had no deep sleep problem on all k2-x, but now on k2-8 i have this problem.
[Galaxy S II Original Android Development] adam1741:
Sorry if this has been asked before, but is there a possibility of custom boot animation support being added in the future?
[Galaxy S II Original Android Development] BrandoHD:
Keep the sorry, do a search, read!!!!!
[Galaxy S II Original Android Development] adam1741:
I did try doing a search. I read that its not supported but i couldn't find out why.
[Galaxy S II Original Android Development] BrandoHD:
Because the kernel author chose not to support it.

The question is: why do you want to know why?

It is what it is
[Galaxy S II Original Android Development] fenomeno83:
Please, read before write! I ask for undervolting support, not for undervolted kernel! It is a "little" different!

Then, in that post wrote about "no overclocking", but it released also a 1400mhz overclocked version. So, my question isn't so useless
[Galaxy S II Original Android Development] formidabilus:
just flashed K2-5 again, and the deep sleep mode is working again. I'm gonna wait for a new improvement... [-(
[Galaxy S II Original Android Development] donalgodon:
The 'why' is the prerogative of the developer. It's not the philosophy of this kernel. There are multiple other kernels, each with their own features which vary from kernel to kernel, but the core philosophy of this kernel is what the OP dictates.

If you need those features, this isn't the kernel you should choose. It's better to find one that fits your particular desire rather than continually asking what has been asked and answered dozens of times, if not hundreds, in this thread.
[Galaxy S II Original Android Development] BrandoHD:
It's basically the same thing, the only argument is that one is done by the kernel author before release and the other, the user does it on his own, both have potential to be unstable not all phones are created equal, therefore implementing such a feature may work for the majority, but cause issues for the minority, something that hardcore chose to avoid. He may also have other reasons

So to reiterate

So the be a person who used the kernel for what it is and stop asking the developer for something that he has stated he will not support. Let him change his mind on his own, if he wants too

And if you read the thread, you should notice that he does not even respond to the requests for bootanimation, underclocking/overclocking and BLN, he has already put the necessary information in the post I quoted.....

And to deal with your last edit:

A decision that was mostly influenced by what he saw in the Source Code, not by the continuous questions being posted, one that he has already reversed.

Let's let go of the semantics and enjoy the kernel for what it is, if we need these other features so much, this is android, excercise choice or learn to compile kernels adding the stuff that WE want

Of course, if it's a feature that may be missing that was not covered in the Opening Post, I doubt it very much hardcore may have an issue with a question being asked e.g FUSE and CUSE support, but otherwise, just flash.....
[Galaxy S II Original Android Development] lokhor:
I really want to flash K2-8 but I had battery life problems with K2-6 so am currently on K2-5. Can anyone vouch for K2-8 having good battery life?
[Galaxy S II Original Android Development] tkalli:
I have never had a battery life problem with any speedmod kernels.

Therefore, I assume it will be fine, but as it has just been released final

judgement will have to wait.​
[Galaxy S II Original Android Development] Pacifiste95:
I've the k2-8, i don't have any issue

Everything is perfect.

KI8 stock rom
[Galaxy S II Original Android Development] KennyLegend:
Speedmod has always had good battery life for me.. Better than any other kernel.
[Galaxy S II Original Android Development] Tyrol:
That's strange. I'm running CRR on SpeedMod K2-8 as well, no problems with deep sleep here.
[Galaxy S II Original Android Development] Jeremy:
Strange. I'm having the problem too.
[Galaxy S II Original Android Development] crash_194:
Strange i can flash k2-7 turn screen off and deep sleep registers within seconds, i can then flash k2-8 and leave screen off for hours and phone will never register as going in to deep sleep at all? I wonder why we all experience this issue randomly?
[Galaxy S II Original Android Development] Seifer1975:
Strange, k2-8 was still running fine for me yesterday. But this morning, after unplugging from the charger, I noticed that the phone is very warm, and also lost 4% in one hour. Checked and saw 0% deep sleep also.
[Galaxy S II Original Android Development] Tyrol:
Off-topic but there's been 4 consecutive posts with the word 'strange' in them now, lol. How.. Strange? XD
[Galaxy S II Original Android Development] thanksgiving60:
okay

at first i thought it was rom version related because i was on a kh3 rom last night and i couldnt get into deep sleep but then i CLEAN INSTRALLED checkrevo with no apps installed still no deep sleep

i give up, back to k2-5...
[Galaxy S II Original Android Development] meliorus:
This kernel is don't have a wake lock :)

Look to my screen shoot

I think that changing the brightness does not work in the most minimal and cost effective manner.
[Galaxy S II Original Android Development] crash_194:
Haven't a clue what your saying here mate?
[Galaxy S II Original Android Development] syahrulzaman:
nice battery percentage...
[Galaxy S II Original Android Development] BAWS:
d ele te .....
[Galaxy S II Original Android Development] lindsaytheflint:
K2-8 resulted in a non-booting black screen for me. Tried a couple of reboots, same thing. Fixed by flashing a different kernel.

Running a XXKI4 ROM, and flashed via CWM.

(Also the version number via CWM showed as K2-1.)
[Galaxy S II Original Android Development] thanksgiving60:
yea

every cwm version that hardcore has provided so far has shown K2-1
[Galaxy S II Original Android Development] Остап:
Very good ! Nice deep sleep ( night - 7 hours - 1 % without data & performance ( ondemand & cfq - especially on I/O !!! ) !

Awesome !
[Galaxy S II Original Android Development] byobodybag:
I flashed K2-8 yesterday when my batt was around 75%, I charged today with around 20% left and 20hrs of usage.

This with normal browsing, mail sync, facebook, etc. So yeah, K2-8 rocks! No deepsleep issue nonsense.
[Galaxy S II Original Android Development] KennyLegend:
Deep sleep not an issue here on k2-8.

View attachment 759491

Thanks Hardcore.... Your kernel is amazing. Fantastic work mate :)
[Galaxy S II Original Android Development] hardcore:
K2-9:

- Removed -ffast-math from compiler optimizations

Just a very minor change from K2-8.
[Galaxy S II Original Android Development] scary_master:
now deep sleep works fine, thx "hardcore"

*weird*
[Galaxy S II Original Android Development] bungknees:
for the people with deep sleep issues, try a reflash of the kernel, it could be due to something not quite right with the original flash. It fixed a deep sleep issue I had a while ago with the kernel. Not the kernels fault, just sometimes **** happens.
[Galaxy S II Original Android Development] coolfire:
Amazing is an understatement, IMHO. :)

Sent from my SGSII
[Galaxy S II Original Android Development] renton82:
I'm going to write "no deep sleep with k2-9", but i've tried to reflash the kernel and now deepsleep works fine!

Thanks!
[Galaxy S II Original Android Development] Seifer1975:
Still no deep sleep for my baby....:(
[Galaxy S II Original Android Development] renton82:
Try to reflah the kernel
[Galaxy S II Original Android Development] dzontra11:
Try to reset..
[Galaxy S II Original Android Development] Seifer1975:
Reflash, reboot..all tried already...just no deep sleep. But once I reflash back to K2-5, deep sleep returns with a vengence! I am very :confused:
[Galaxy S II Original Android Development] scary_master:
i had the same problem with k2-8 and k2-9! but now it works!

try to wipe cache & dalvik, after that reebot, then turn mobile phone completely off, turn on and wait about 30 min.
[Galaxy S II Original Android Development] bsb1:
Flashed K2-9, same issue as K2-6.. no phone signal/connection after each reboot. Fine with K2-5, K2-7 and K2-8, so back to K2-8.. Btw many thanks Hardcore !
[Galaxy S II Original Android Development] maxvanni:
great kernel as always! @hardcore, why don't you insert wipe cache and dalvik command in cwm version? maybe there will be less issue to people who don't know the mean of wipe and keep a clean phone.
[Galaxy S II Original Android Development] ephraim:
Guys, for those having deep sleep issues try clearing dalvik cache and cache then try flashing the kernel again, our works for me..
[Galaxy S II Original Android Development] jlieu:
Possible to dedicate sound enhancement features for example to what have done to galaxy s, the voodoo sound?
[Galaxy S II Original Android Development] Molitro:
No. Supercurio said a while ago that S2's chip is pretty much as exploited as it can be.
[Galaxy S II Original Android Development] dan@msx:
Flashed k2-9 from k2-5.... Wiped dalvik cache and left for 40 minutes.... Deep sleep working no problem.
[Galaxy S II Original Android Development] ram3n:
Hardcore,

maybe it's time to integrate this ultimate fix from Entropy512 :

Fix fuel alert wakelocks

It would be awesome and *** battery saver ! :D

You should take a look at it : https://github.com/Entropy512/linux_kernel_sgh-i777/commit/fc9eb85807302583259e27013ed184a43107bb67

Cheers
[Galaxy S II Original Android Development] scary_master:
after reboot deep sleep problem is back. i ve wiped everything before/after flashing k2-9. i m back on k2-6, no probs there.
[Galaxy S II Original Android Development] renton82:
No deep sleep for me too after reboot!
[Galaxy S II Original Android Development] Seifer1975:
No beef. Wipe cache, dalvik, off, wait 30 min. Just no deep sleep. But once flash k2-5 deep sleep comes back.
[Galaxy S II Original Android Development] jlieu:
Looks like K2-8 is better.

Any idea how to remove that the small yellow triangle after flashing custom kernel?
[Galaxy S II Original Android Development] renton82:
Same situation
[Galaxy S II Original Android Development] hardcore:
There is no difference between these kernel versions that I know of which can affect whether deep sleep works or not.
[Galaxy S II Original Android Development] Tyrol:
Use a jig?
[Galaxy S II Original Android Development] timberwolf60:
Fellow the two steps below:

1) Used CWM flash kernel to flash the secure kernel till it boot completed.

2) Same as above but now flashed siyah kernel till boot completed and you are done.
[Galaxy S II Original Android Development] Seifer1975:
Hardcore, I am equally confused. But this is the situation with me, and I supposed some others as well. I am ok with k2-5 though.
[Galaxy S II Original Android Development] kobellza:
So seems like ppl get better battery life/deep sleep more on K2-5 right?
[Galaxy S II Original Android Development] renton82:
for me too, maybe depends on rom, i'm with ki4.
[Galaxy S II Original Android Development] miketwn:
exactly...im not having any problems with any of the k2 series kernels....;)

for the ones who having no deep sleep issues. Power off phone and charge it offline. Usually, when my battery is going haywire, this procedure solves it...:)
[Galaxy S II Original Android Development] Cygnuss:
is the k2-9 tweaked with lower autobrightness levels?
[Galaxy S II Original Android Development] hardcore:
Yes, but it is only very slightly lower than stock at low levels. At mid to bright levels it is the same as stock.
[Galaxy S II Original Android Development] XSilentCobraX:
can i flash this on a MIUI ROM? dosint say anywhere :P

EDIT: nvm i found it ;)
[Galaxy S II Original Android Development] hardcore:
Did you use betterbatterystats to check if any app is holding onto the wakelocks? And also, I like to use another app Android Status to check the CPU load and see which process is using the CPU.
[Galaxy S II Original Android Development] thanksgiving60:
im perfectly fine with k2-7

good work hardcore

maybe that means some of us will never get to use the latest speedmod again :D
[Galaxy S II Original Android Development] byobodybag:
That's a travesty, the K2-9 is the equivalent of rainbows and unicorns! :D
[Galaxy S II Original Android Development] Razertje:
Thank you for this great kernel, using it on stock KI8, working great!
[Galaxy S II Original Android Development] Enginezhang:
Update once a day，crazy！:eek:
[Galaxy S II Original Android Development] formidabilus:
what ROM do you have?
[Galaxy S II Original Android Development] miketwn:
checkrom revolution v1.0
[Galaxy S II Original Android Development] flute:
The same here...

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[Galaxy S II Original Android Development] Seifer1975:
Hardcore, I am not sure if it's gonna be helpful or if I am doing this correctly. I downloaded Android status, go to the CPU graph part and then switch off the phone. Did that for 10min with K2-5 and K2-9. Attached are the graphs.
[Galaxy S II Original Android Development] elbasso:
Deep sleep working fine here on k2-8
[Galaxy S II Original Android Development] formidabilus:
we have the same ROM, do you have any problem with the deep sleep mode at k2-9?