yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] chrisjcks:
lol i dont,

I just trust the guy, my kernel of choice (although i still like to try and test others too) since when i bought the first galaxy i9000 on release date and speedmod was the best.

sure, ext2 & ext4 partitions were a pain, but hardcore made it super easy and his kernel was always the 1. highest benchmarks 2. best battery 3. silky smooth.

so, immediately switched to speedmod as soon as he brought his skills to the i9100 GS2.

however, 1. highest benchmarks is no longer relevant to speedmod as siyah seems to score around a 1000 more on antutu, im unclear as to why this would be. Quadrant scores are the same as Siyah (if not higher.... :D )

but i still find speedmod to be the most stable, smoothest kernel that seems to offer the best battery. (or one of... its hard to judge as all seem to be very similar on stock settings)

rock on Hardcore. :D

But the introduction of Voodoo Louder and Tegrak in the latest versions, for me personally, offer me greater sound for my music / podcasts and FM Radio whilst Tegrak should offer me even further battery life.

I have meddled in 'overclocking' before on my GS2, but other than benchmarks - i saw no difference in phone performance, so dont think i will bother with that.

Under-volting however, i will certainly be testing on my GS2 - anything for further battery life.

Tegrak should thank Hardcore, & vice-versa, speedmod users get to improve their battery further (if they choose to) & im sure the inclusion of Tegrak into 'the most popular' kernel available, can only increase sales figures for his ultimate paid app on the market.

good stuff & everyone is a winner. :)
[Galaxy S II Original Android Development] yltan:
CPU core voltages:

1200MHz = 1175mV (stock = 1250mV)

1000MHz = 1075mV (stock = 1150mV)

800MHz = 975mV (stock = 1050mV)

500MHz = 900mV (stock = 975mV)

200MHz = 875mV (stock = 975mV)

CPU internal voltages:

1200MHz = 1000mV (stock = 1100mV)

1000MHz = 1000mV (stock = 1100mV)

800MHz = 1000mV (stock = 1100mV)

500MHz = 900mV (stock = 1000mV)

200MHz = 900mV (stock = 1000mV)

GPU voltages:

266MHz = 950mV (stock = 1000mV)

133MHz = 850mV (stock = 160MHz/950mV)

If I applied the Tegrak setting as above and set on boot check together with the default power system power saving check as well. Would the Tegrak setting overide the default system, power saving on my stock 2.3.6 with K2-20?
[Galaxy S II Original Android Development] segelfreak2:
Oh man,

I just tried Siyah and..... went back to Speedmod K19 :p ...no comment on the first one.

I will try K20 again this afternoon and test it with different Tegrak settings. Who knows. Maybe my settings are the reason for lagging, although I have exactly the same settings running smooth with K19. We will see....

Nevertheless, thank you hardcore for this great kernel. Keep going in developing this slim, performant kernel. Your the best!

Best regards,

SF
[Galaxy S II Original Android Development] Bommeke:
How much do people gain using Tegrak? Is it an extra hour display time, a couple of hours idle time? I'm thinking of doing some tweaking myself.
[Galaxy S II Original Android Development] chrisjcks:
Can someone please direct me to the 'how to' keep my custom VillainRom boot screen?

I know its not possible by default, but I'm sure using root explorer I can do it.
[Galaxy S II Original Android Development] doongoo:
for me siyah 2.6.11 has higher scores in benchmarks, then speedmod
[Galaxy S II Original Android Development] kotaxor:
Awesome, I use to have 'home screen flashback' when waking from sleep numerous time with previous k2....but with k2-20, seldom happen...cool.

Battery is awesome in deep sleep as always.

Smooth.

Thanks for this!
[Galaxy S II Original Android Development] ziroxs:
Please ignore benchmarks ;) If someone want he could manipulate the kernel settings to receive higher benchmark result. :confused:
[Galaxy S II Original Android Development] shockwaverider:
K2-20 has been really smooth for me, GoLauncher transitions and everything else have been smoother than with 19. However, I lost touchscreen response twice today while plugged into the wall charger. Once was with Titanium, and I actually can't remember what I was doing the other time. I was able to turn the screen off with the power button and unlock the screen normally with the touchscreen oddly enough, but then was still stuck in titanium. Unplugging the charger solved the problem. Running Checkrom Revo v5.
[Galaxy S II Original Android Development] JmPTaz09:
Understood; pm me if you do decide to and I will test it for ya. Good luck with development; love to try your kernel.
[Galaxy S II Original Android Development] doongoo:
I don't care about benchmarks, it was just an iformation. Till now I was on Speedmod, but recently I have changed to siyah. Both have good performance, smoothness and good battery life, but I have more options to play with in siyah (and it supports bln too, custom boot animation and also UV-ing)
[Galaxy S II Original Android Development] Soviet_Rebel:
I totally agree even with stock TW launcher and it lags even in the settings menu, scrolling up and down. Used "kernel cleaning script" before installing. Currently on checkrom revo hd v4.

Switching back to k2 -18.
[Galaxy S II Original Android Development] KeesStolk:
Second impression of the K2-20 since i flashed it yesterday.

I don't see any lags, all is smooth and fast.

Great battery life, let it run some mp4 for about 5 hours, played some angry birds, surfed on the internet for a total of 30 minutes, off course i used XDA premium for more then a 1/2 hour and still got 40% battery left.

All with 3g enabled, wifi for about 1/2 hour.

Best i seen so far.

Normally with same things done, i would end up with less then 30% left.

But i must see that i did the battery calibration method just 1 day before.

Charged to full when S2 is off, quickly remove the battery after the signal that it is full charged and let it out off the S2 for a couple off minutes.

http://xdaforums.com/showthread.php?t=1312273&highlight=battery+calibration
[Galaxy S II Original Android Development] liljom:
hey mate,

with the tegrak app you can lock GPU @ 266MHz, you can set the voltage for the GPU, CPU core voltage, internal voltage if you use speedmod.
[Galaxy S II Original Android Development] jonny68:
I am using K2-19 and it's absolutely fine although i found battery life and deep sleep to be better in K2-19 test 5 for some reason.

Just regarding this kernel cleaning script i assume you flash it via CWM, is it recommended to flash this before flashing a new kernel as ive always just flashed the update.
[Galaxy S II Original Android Development] KeesStolk:
Using the script since I found it.

I always flash the script first with cwm, before I flash a new kernel.
[Galaxy S II Original Android Development] stocovick:
The same happened to me! I'm also running revo v5 and k2-20!
[Galaxy S II Original Android Development] Soviet_Rebel:
I felt it too. +1
[Galaxy S II Original Android Development] henriquesb:
Did it hurt? :D
[Galaxy S II Original Android Development] KeesStolk:
Not seeing it, but i am using Launcher pro.
[Galaxy S II Original Android Development] chrisjcks:
Loving the tegrak support,

However - i think only the core voltage changes work, internal voltages don't seem to be working.

Surely i shouldn't be able to lower 1200mhz internal voltage to just 750mv from its default value of 1100mv and still be able to run constant benchmark & stability tests without crashes.

I don't even know what 'internal voltages' are, ive only ever played around with core voltages. (but tegrak seems to offer settings for both)
[Galaxy S II Original Android Development] doongoo:
Thanks! Not tried this app yet (now running siyah with voltage control. It can also underclock? I mean lowest CPU frequency from 200 MHz to 100 MHz.
[Galaxy S II Original Android Development] californicated:
@hardcore

After my last phone call my display again didn't turn off automatically. I'm still using k2-19 test5. Is the problem still not fixed? Your kernel is really great, but this issue makes me feel paranoid. I'm always looking at my phone if the display isn't turned on :p
[Galaxy S II Original Android Development] kimagure01:
can you please teach me where can i found the script?
[Galaxy S II Original Android Development] ziroxs:
You can find it here

http://xdaforums.com/showthread.php?t=1363738&highlight=ultimate
[Galaxy S II Original Android Development] jonny68:
I've gone back to K2-19, last night I flashed the kernel cleaning script then K2-20 but since then there is a very noticeable lag when scrolling through screens this did not happen with K2-19 so I've gone back to that!
[Galaxy S II Original Android Development] komsa:
same situation for me only i got back to 19 test 2
[Galaxy S II Original Android Development] carlos67:
K2-20 not for me.

It's gonna take something quite special to get me off of K2-19 test 5. It's a very stable, smooth and great deep sleep kernel. Never any issues with it. Using ADW launcher btw, after long periods trying to learn to live with Go-launcher and launcher-pro plus. They are not a patch on ADW. Go launcher was always laggy on my phone and LP plus always force closed after booting up, apparently because it's not optimised for gingerbread. ADW is super smooth, stable and highly customisable, wish I'd tried it months ago.:rolleyes:

From the feedback so-far, it seems that Hardcore's latest effort is not being greatly received, so I will pass up on this latest version until the feedback is much better on a later release.

@Hardcore - really appreciate all your efforts man, thanks. Your code has improved my phone ten-fold from stock. ;)

btw, ROM is checkrom Revo v4 with XXKI4 modem.
[Galaxy S II Original Android Development] Soviet_Rebel:
I'm still on K2-20 and this morning, while opening a video on youtube (browser) the phone crashed and rebooted. My battery level was 60% before the crash and when the phone rebooted i got only 20%!

Look at the screenshot.

PS= This was the first charge since i calibrated the battery, could it be because of this or it's kernel related?

I'll keep k2-20 for a while for test purposes, but imho the best release was k2-18, because i had problems (lags) also with k2-19 and k2-19test5.

just a lil' bit ;)
[Galaxy S II Original Android Development] jonny68:
Actually K2-19 test 5 as Carlos67 mentioned is probably one of the best releases for Speedmod especially for deep sleep so i think ill go back to that but i cant see a download link for it just K2-19 final would someone kindly upload it for me please.

Cheers
[Galaxy S II Original Android Development] Chanz09:
Same tried 19 & 20 as too many lag and worse for battery life. K2-18 final works best for me.
[Galaxy S II Original Android Development] monster75:
I had the same problem with Phenomenal 2.x. I don't think it is k2-20 related and the jump down of the battery maybe depends on the system which crashed and "forgot" the previuos level. After one full battery cycle, It will be fixed by itself
[Galaxy S II Original Android Development] Rasmusvm:
Flashed k2-18 again today. Had screen lag with both 19/20 I prefere 18 :)

Thanks for your great kernels Hardcore! Will never stop using it
[Galaxy S II Original Android Development] jonny68:
Can anyone oblige here :)

thanks
[Galaxy S II Original Android Development] pingvin69:
this issue fixed in k2-20?
[Galaxy S II Original Android Development] carlos67:
Running like a champ - thanks to Hardcore.

Guys, is this phenomenal or what? This is just how good k2-19 test 5 is for me. See for yourselves below - 50 hours with wifi on 95% of the time and 3 hours of screen on time including 1 hour 20 mins of voice calls. No silly so called "battery saving" apps. Check out how my awake time virtually matches my screen on time. Weather sync every 3 hours, email every 1 hour, facebook and twitter widget every 2 hours, stocks every 1 hour. All samsung bloat frozen, maps frozen. Gemini app manager used to stop apps from starting unnecessarily so. CPUSpy showing typically 93/94% deep sleep. Screen brightness on manual at 50%. O'clocked to 1.4Ghz using Tegrak and undervolted by 100mv (core voltage only) on each step and rock stable. No reboots,ever and just super smoooooooooooth. Stock battery before anyone asks.

Can anyone beat this? :p (throws down gauntlet)..........

and, btw, STILL 7% left!!!!!

p.s. see my previous post a few back to see Rom/modem etc etc.

and, finally, yes Iv'e been a bit of an arse for bragging, but I'm just so chuft with ma little sammy. Had to do it I guess. Wanted to show you all what's possible.
[Galaxy S II Original Android Development] Soviet_Rebel:
Yes, I agree, don't think it's kernel related. Anyway, thanks.
[Galaxy S II Original Android Development] hardcore:
K2-21:

- CPU frequency scaling adjusted
[Galaxy S II Original Android Development] segelfreak2:
Just wondering what exactly is meant by: - CPU frequency scaling adjusted
[Galaxy S II Original Android Development] pSyCh¤_O_O:
touristinparadise.blogspot.com/2011/10/samsung-galaxy-s2-download-speedmod.html
[Galaxy S II Original Android Development] ObihoernchenDE:
post-init.sh

K2-20:

echo "[B]95[/B]" > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold

K2-21:

echo "[B]85[/B]" > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold

So K2-21 ondemand governor has better performance.
[Galaxy S II Original Android Development] ngsngn:
as per attached, k-19-test5 cwm.:)
[Galaxy S II Original Android Development] hardcore:
Yes, it should make things a bit smoother again.
[Galaxy S II Original Android Development] segelfreak2:
- wrong post -
[Galaxy S II Original Android Development] ObihoernchenDE:
@hardcore What do you think about this tweak (Tweaked deadline gov. for flash usage)? https://github.com/adrynalyne/kernel_htc-mecha/commit/620f941cf9f6e51ec3d1b873ef0ae0ee7b38e785
[Galaxy S II Original Android Development] luexi:
The smoothness transition using LWP(go launcher) is back on 21!

Thanks hardcore!

:D
[Galaxy S II Original Android Development] carlos67:
Just wanted to point out that K2-19 test5 has Ondemand up_threshold set at 85 anyway. Just looked and that's what it's set at. It must have been increased in K2-20 or K2-19 final and Hardcore has seen fit to reduce it again to 85.
[Galaxy S II Original Android Development] Alexpiri:
Using k2-21 from this morning and I'm using SwiftKey and i find it a Little bit laggy when i write very fast. No problems with the previous versions of the kernel

Inviato dal mio GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] roymustafa:
HI Hardcore ad everyone. If i wat to flash this kerel over CF Root, do i have to wipe cashe and dalik cashe?

Thanks
[Galaxy S II Original Android Development] cr0wnest:
Excellent kernel, amazing battery life, but most impressive of all is the smoothness. Dont really notice much of a difference in the color saturation or the sharpened word text. But its no big deal.
[Galaxy S II Original Android Development] LiFE1688:
Hey hardcore,

With the speed you are churning out Kernels, perhaps you might want to consider switching to Clockwork Recovery ZIP format instead of TAR format?

I have not tested the attached zip, but it should work.

It is not signed.
[Galaxy S II Original Android Development] miisterlim:
Very nice work hardcore, you have won me over from hacre's camp.
[Galaxy S II Original Android Development] golf60:
@all

You can Flash this tar Kernel with darkyrom2 app from the market! No need for odin.

The new t22 works great, thx...
[Galaxy S II Original Android Development] nikzDHD:
Or using CWM Manager as well!
[Galaxy S II Original Android Development] galanakop:
I try to sett at 200-1600 I do but do not go higher than 1000 ... I am a LEO Mar 2.5 ... why is this;;; before and ninfetamine angelom and this was ..

All this sets the cpu
[Galaxy S II Original Android Development] Pacifiste95:
can someone explain me what is that " Updated compiler optimization options" ?

thx
[Galaxy S II Original Android Development] Vulpix:
I asked in this thread once what the changelog means and nobody explained it. Just treat it as fairy magic or something. :(
[Galaxy S II Original Android Development] hardcore:
This is currently what is being used, in case you are curious.

-O2 -funroll-loops -marm -march=armv7-a -mtune=cortex-a9 \

-mfpu=neon -mfloat-abi=softfp \

-floop-interchange -floop-strip-mine -floop-block
[Galaxy S II Original Android Development] nickporwal:
LOL.....cant say of others bt i understood nothing from it...:D

BTW Hardcore can you please release a cool color version of this kernel. Our SGS2 display is overall a lit bit more warmer in colors than SGS. I dont want any OC as this phone is already very fast. Also there are hardly any good games for any need of GPU OC. Thanks for the "Hard (core) Work".:p
[Galaxy S II Original Android Development] golf60:
@hardcore

Phone sometimes freeze after call in blackscreen and only put batterie out alive phone with t22
[Galaxy S II Original Android Development] yeahtyeaht:
have this kernel tegrak support?
[Galaxy S II Original Android Development] Guitarfreak26:
Hi Hardcore

Is there any chance you can up the touchscreen sensitivity while charging like hacre has in 2.05. I use the SGP Glass and the phone becomes virtually unusable when charging without the fix :(
[Galaxy S II Original Android Development] dem000n:
Hi Hardcore!

Can we expect the SetCpu support in the upcoming versions?

thx
[Galaxy S II Original Android Development] dsmaori:
I've been using speedmod kernels now since T17 and love them. Since flashing T22 the volume of notifications/texts and ringer volume seem to be alot quieter? Does that sound like something to do with the kernel? I've been on Lite'ning 5.0 from the start so haven't changed anything except the kernel..:confused:
[Galaxy S II Original Android Development] gil80:
source code

Hi @hardcore.

I have a noobish question since I don't really know code.

It had been said that users who encounter yellow tint in the left side of the screen are able to solve this by flashing to KG5 stock with stock kernel or CF-kernel since samsung didn't release their kernel source code or something like that.

Is it true?

http://xdaforums.com/showthread.php?t=1079444&page=195

thanks in advance
[Galaxy S II Original Android Development] jetshinoda:
Doesn't feel quieter here..everything just goes fine except i can't use boot animation on this kernel
[Galaxy S II Original Android Development] Pryda:
http://dl.dropbox.com/u/9394351/TouchScreenTune.apk

Here is the apk to change the value. (from tweak' author thread)
[Galaxy S II Original Android Development] ZhuraYuk:
hardcore can you edit GL driver to enable dithering and 24 bit mode?
[Galaxy S II Original Android Development] cr0wnest:
+1 for this. I prefer setcpu when it comes to CPU management. My only real complaint is that i have for forsake this app while im running this kernel.
[Galaxy S II Original Android Development] Alexpiri:
Yes wipe cache and dalvik cache

Inviato dal mio GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] GregX80:
Mate I flashed k2-21 today and it gives better battery live than 20. I have it from about 5 hours and my pnohe has been sleeping for 98% of this time and I've lost one 1% of battery. For me this is the best kernel for battery life what I've ever seen in my life.
[Galaxy S II Original Android Development] GregX80:
You can use kernel cleaning script.

Edit:

Post after post. Sorry about that.
[Galaxy S II Original Android Development] ronalzhe:
When I plug my phone into charger the touch response is not very good. Does anybody have the same issue with me?
[Galaxy S II Original Android Development] chrisjcks:
Latest version is running perfectly for me.

However, cpu frequency scaling adjusted, what exactly has been adjusted, anyone know?
[Galaxy S II Original Android Development] antonis9891:
Very good kernel indeed.

Not the fastest one, I think cause ondemand governor is not tweaked only for speed, but it's the perfect combination of battery permormance and speed.

And the greatest of all, it's rock solid.

Thanks hardcore.
[Galaxy S II Original Android Development] shingo86:
Read the source code or read page 678 onwards. Someone explain it already.
[Galaxy S II Original Android Development] sohail667:
help

how to use this kernel in folder there is a patch file and zip file but z image not found
[Galaxy S II Original Android Development] humzafar:
You downloaded CWM version?

If CWM, just flash it in Recovery

(before flashing clean cache and dalvik cache in Recovery mode, or use Kernal cleaning script)
[Galaxy S II Original Android Development] morg01:
Is it ok to flash koush's latest touch recovery with this kernel not knowing whether there's a compatibility issue?

Edit:

Tried to flash touch cwm recovery zip but just hung... I suppose it needs to be baked in to the kernel?

Sent via courier pigeon
[Galaxy S II Original Android Development] sohail667:
from where i download cwm file official link not working
[Galaxy S II Original Android Development] chrisjcks:
The official link which is also in my signature works just fine.

I've also just tested the latest cwm download link for you - it downloads fine.
[Galaxy S II Original Android Development] kotaxor:
Have been more than 24hrs....k2-21 is awesome!

Seem battery life is better than k2-20...

Smoother and stable.

Great.
[Galaxy S II Original Android Development] andrei_me:
very good kernel, the 21.. good battery life with the 2000mAh battery. congratz to the dev.
[Galaxy S II Original Android Development] chrisjcks:
I agree,

21 does seem much smoother to me compared to 20.

But only time will tell, need a few days of usage to see how it holds up, & to compare battery life.

So far, good stuff. :)
[Galaxy S II Original Android Development] sohail667:
helpppppp

http://touristinparadise.blogspot.com/2011/10/samsung-galaxy-s2-download-speedmod.html

this link is not working in pakistan till morning.plz another link for 2-21
[Galaxy S II Original Android Development] chrisjcks:
The link Works!

It's a problem on your end.
[Galaxy S II Original Android Development] al_madd:
It is adviseable you dont lower min freq to 100mhz
[Galaxy S II Original Android Development] GregX80:
I can confirm that too. I didn't have good battery life on k2-19. K2-20 is better but 21 is death on! For me best battery life even than K2-16.
[Galaxy S II Original Android Development] nikzDHD:
Testing new version and its great, speed and performance is solid and battery so far is good on wifi will test out how battery life with 3g and poor reception at work fares but overall a pleasing kernel. Thanks hardcore.
[Galaxy S II Original Android Development] morg01:
@hardcore

Next version to include touch recovery?

Sent via courier pigeon
[Galaxy S II Original Android Development] Soviet_Rebel:
Been testing K2-21 for nearly 30 hours and i have to say that it's great! It's MUCH smoother than k2-20 and the battery life is really good. As you can see 21h, with background data always on, three gmail account with push notifications, 1hour calls, texting, whatsup, 3hours screen on with HEAVY usage (1hour playing shadowgun with gpu locked @267MHz with tegrak, heavy web browsing with lots of long flash videos and shot many photos and videos)...still 35% left (with the stock 1650mah battery)!

Thank you hardcore.

Ps= love the support to vodoo louder and tegrak.
[Galaxy S II Original Android Development] sohail667:
help plz

i cant download k2-21 from this blog http://touristinparadise.blogspot.com/2011/10/samsung-galaxy-s2-download-speedmod.html

plz any another link??

or upload on filesharing site plz plz
[Galaxy S II Original Android Development] ZiDanRO:
Question: if anybody have my problem? I flashed I9100XXKL1 and after that SpeedMod SGS2 K2-19 and i cant get root. Only after i flashed Chainfire root and then k2-19 i got root. I've tryed on two brand new I9100, both with the same result, no root.

Same problem i have with k16-11 Galaxy S1. After flashing Speedmod and entering in Recovery mode and install su rights i cant get root.

Why both kernels dont have root straightforward? I hope I made my self understood.