yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Original Android Development] prosumerhacks:
Since flashing the latest kernel few hours back I had once seen a pale yellow color appear on screen.. had to switch off and on the screen to get rid of it.. was wondering what it was and if there's any risk in continuing to use the kernel... has this happened to any users of the latest test release? I had previously heard about temporary color changes to screen but the reason why it happens beats me... anyone care to offer a plausible explanation?

Sent from my GT-I9100
[Galaxy S II Original Android Development] AMDPOWERFIST:
Test results so far:

Testing is done in the same location each day a new kernel is released. Proceedure is as follows:

COPY NEW KERNEL ZIP TO SDCARD > BOOT TO RECOVERY > WIPE CACHE / DAVLIK > REBOOT RECOVERY > INSTALL NEW KERNEL ZIP > REBOOT RECOVERY > WIPE CACHE / DAVLIK > REBOOT

Battery Monitor Widget app info located here:

http://xdaforums.com/showpost.php?p=19416214&postcount=4418

Conditions: 30minutes rest after restart / widget drain record value

K2-18

test3 had a 104mA drain

test5 has a 87mA drain

test6 has a 43mA drain

test7 has a 44mA drain

test8 has a 41mA drain

test9 has a 40mA drain

test11 has a 34mA drain

test12 has a 27mA drain

test13 has a 40mA drain

test16 has a 48mA drain

test17 has a 40mA drain

K2-18 has a 42mA drain

K2-19-test1 has a 21mA drain

Quadrant Scoring? :-

Conditions: Fully charged / reboot / record 3rd attempt

*note* - Quadrant scores are NOT a measure of real life speed, they are behind the scenes speed and scores should only be used as a guideline for serious issues rather than how the unit functions. E.g. a score difference of 1000 – 1500+ can show some serious faults or flaws in ROM / Kernel Combinations or hardware faults.

K2-18

test 3 had a 4307 score

test 5 had a 4723 score

test 6 had a 4652 score

test 7 has a 4102 score

test 8 has a 4825 score

test 9 has a 4607 score

test11 has a 4118 score

test12 has a 4483 score

test13 has a 4697 score

test16 has a 4423 score

test17 has a 4219 score

K2-18 has a 4433 score

K2-19-test1 has a 4391 score

Kernel Wakelocks:

Conditions: 1hour after reboot / fully charged / screen off

K2-18

test 3 - 10 types of Kernel Wakelocks

test 5 - 11 types of Kernel Wakelocks

test 6 - 8 types of Kernel Wakelocks

test 7 - 8 types of Kernel Wakelocks

test 8 – 5 types of Kernel Wakelocks

test 9 – 11 types of Kernel Wakelocks

test 11 – 12 types of Kernel Wakelocks

test 12 – 8 types of Kernel Wakelocks

test 13 – 11 types of Kernel Wakelocks

test 16 – 8 types of Kernel Wakelocks

test 17 – 11 types of Kernel Wakelocks

K2-18 – 8 types of Kernel Wakelocks

K2-19-test1 – 8 types of Kernel Wakelocks

CPUSpy 1hr % recording (New Recording – started from transition between test 8 to test 9)

Conditions: 1hour after reboot / fully charged / screen off – record values of deep sleep / 200mhz %’ages

Test 8 – Deep sleep 92% / 200mhz 3%

Test 9 - Deep sleep 91% / 200mhz 6%

Test 11 – Deep sleep 91% / 200mhz 7%

Test 12 – Deep sleep 93% / 200mhz 3%

Test 13 - Deep sleep 90% / 200mhz 5%

Test 16 – Deep Sleep 91% / 200mhz 4%

Test 17 – Deep Sleep 91% / 200mhz 4%

K2-18 – Deep Sleep 90% / 200mhz 4%

K2-19-test1 – Deep Sleep 94% / 200mhz 4%

These are however only tests done by my individual unit, every unit is different. Tests WILL vary from person to person / phone to phone.

Personal note: whatever you have done in this test1.... keep it, it has outperformed in battery, general user speed as well. Very pleased, and i am not even using the voodoo sound app as i only ever use Bluetooth headsets or car-link so no point.
[Galaxy S II Original Android Development] gorillaCF:
wow k2-19 test1 looks good from the stats u posted AMDPOWERFIST. i shall give it a try.

a side note, i've heard so much hypes abt siyah kernel, went to try 2.6.4. not much of diff imo, but seems like its laggier, esp when i'm playing game.

always back to speedmod i guess.

keep up the good work hardcore!! :D
[Galaxy S II Original Android Development] morg01:
Tried 19 test 1, very choppy for me, not smooth at all.

Also got voodoo louder working, but not tegrak oc, loading modules woyld just return an error.

Back to 18

Sent via courier pigeon
[Galaxy S II Original Android Development] beaver2233:
Very choppy? It's very smooth for me...
[Galaxy S II Original Android Development] planetf1:
Smooth here too, though not done anything heavy duty
[Galaxy S II Original Android Development] Marc-Sch:
K2-18 update 3 ?? ;-)

Envoyé depuis mon GT-I9100 avec Tapatalk
[Galaxy S II Original Android Development] Marc-Sch:
I never sawed this on my phone... OK, maybe I need to observe more accurately (or change my glasses:D)

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[Galaxy S II Original Android Development] komsa:
............testing now the K2-19-test1,so far very smooth,good battery without problems............K2-18 in my case not always turned off the display automatically but with 19-test1 It does not happen :)
[Galaxy S II Original Android Development] coolfire:
SpeedMod/hardcore FTW!!! :D

Sent from my SGSII
[Galaxy S II Original Android Development] wicked245:
Which governament do you use guys with k19. I use conservative with max 1000 and min 200...
[Galaxy S II Original Android Development] beaver2233:
I use default governor - ondemand - min 200 max 1000
[Galaxy S II Original Android Development] morg01:
Yeah even after using the kernel cleaning script and clearing dalvik cache, installed and even a reboot didn't help, just wasn't smooth at all

Sent via courier pigeon
[Galaxy S II Original Android Development] KeesStolk:
Testing k2-19 test1 on a KL1 based rom since yesterday and so far, looking great.

Everything is smooth and fast.

To soon to tell about battery life.
[Galaxy S II Original Android Development] Vash:
hardcore, I've been wondering,

How hard would it be to have two profiles, one for light usage and one for games, that could be changed on the fly (either manually or through some daemon checking what is active)?

Your main releases are good all-rounders, with good battery life and good gaming performance. However, I've used kernels that sacrificed performance completely to squeeze more battery life - unfortunately this limitation makes them useless when you need the device's power.

I can't help but think that trying to satisfy both extremes (low battery consumption in normal usage - gaming performance) with one set of settings limits your kernel's potential no matter how good the governors and other things are.

update: your k2-19 test-1 kernel is a good example of what I'm talking about. it works brilliantly for normal usage (and I get a feeling I'm going to have better battery life with it) but games struggle. Framerate in Aftermath XHD is well below 24fps with lots of stuttering, GTA III is stuttering a bit here and there (worked extra-smoothly with K2-18) and I haven't even tried Modern Combat 3 yet, I have a feeling I shouldn't. K2-18 was much better at games.

ps: forgot this: thanks for all your hard work :)
[Galaxy S II Original Android Development] cipetonk:
k19 test1 is slow for me even after using kernel cleaning script, quadrant score about 3500, played let's golf 3 and game wasn't smooth.

am on checkROM KK5 :)

which ROM are you using actually? your signature says you are using CheckRom RevoHD V4, and it's KK5 based rom
[Galaxy S II Original Android Development] KeesStolk:
It also says DK kernel :)

Just doing some testing off diferent roms, kernels and modems at the moment.
[Galaxy S II Original Android Development] Jonjungle:
K2-19 test 1 very smooth here. No issues at all.

Am on Frankenstein XWKL1 Rom, XXKL1 Modem.
[Galaxy S II Original Android Development] h4m74ro:
I just realized how crisp fonts on my old Galaxy S with Speedmod kernel look.

I'm now wondering why the fonts on the S2 are so washed out and fat compared to the S1. This is the case for all fonts (Droid, Roboto, even Choco Cookie)

The screen of the S2 has full RGB subpixels, theoretically it could be even crisper on that screen.

Picture with bad focus follows. The difference is bigger in real life than in the picture...
[Galaxy S II Original Android Development] puiradu2009:
With K2-19-test1 i can not reset the custom counter with jig cable.
[Galaxy S II Original Android Development] iNeri:
Its not kernel related. Bootloader related.

Enviado desde mi GT-I9100 usando Tapatalk
[Galaxy S II Original Android Development] It_ler:
Have a look at Intratech's post => http://xdaforums.com/showpost.php?p=16781156&postcount=2

There you will find a grey box with red text, saying something about old bootloader.

Just download the old bootloader, flash it with Odin to your phone and the try to use your Jig again.

Good luck !
[Galaxy S II Original Android Development] puiradu2009:
I managed to solve the boot-loader thing.

First of all I use the I9100XWKI4 don-t like the new kernel for two reasons:

1. From the moment I flash it my battery is discharging quickly. Now I'm with the charger plug-ed in and is not charging at all

2. I have poor score in quadrant 3000-3200max compared with K2-18 4200-4600max with the same firmware. (I really don't understand this big difference!!!! Huge!)

Pro: Voodoo Louder is working with this K2-19-test1.

I think I will switch back to the original kernel.
[Galaxy S II Original Android Development] walie:
error on the camera with a black screen when trying to use the"barcode scanner" app when using version 19-test-1. Going back to V18-final
[Galaxy S II Original Android Development] mathsmart:
No problem at all here with checkrom kk5 and ics theme from.vert

Sent from my GT-I9100
[Galaxy S II Original Android Development] warfanax:
Thanks Hardcore. I already informed Tegrak about your kernel and he updated his OC module today.

To all who want to overclock Speedmod kernel, tegrak OC app works fine now. You can try.
[Galaxy S II Original Android Development] luexi:
I am on XWKK5 with K2 19 test 1.

In the home screen transition(from page to page) is not smooth(jerky) using go launcher ex.

Previously was with K12 18 test 17. Very smooth for that. No issue.

Any ideas?

Returning back..
[Galaxy S II Original Android Development] ladyboo:
barcode scanner works fine with version 19 test no problems here
[Galaxy S II Original Android Development] Jonjungle:
Check the governor you are using, I suggest leaving it on "on demand", if it is already have a look to see if you're using any battery saving apps like for example AnTutu Battery Saver as it tends to limit the cpu's max clock speed to 1Ghz or less by default every time you reboot.

I have the default launcher and no issues with K2-19
[Galaxy S II Original Android Development] morg01:
Was the same for me so reverted back to 18

Sent via courier pigeon
[Galaxy S II Original Android Development] FrenchSparda:
Same for me. Golauncher need power to run smoothly
[Galaxy S II Original Android Development] chrisjcks:
voodoo louder - freak in awesome!

Thanks hardcore for implementing this into your kernel!

Well chuffed :D
[Galaxy S II Original Android Development] supercurio:
He was missing force module loading. But found another very nifty way :P
[Galaxy S II Original Android Development] Canadoc:
I am having a weird problem. Not sure if it is kernel or firmware related. Every time I install a new app often when waking from sleep or rebooting the icons in the dock are not the stock ones but are of My recent installation. Then after a few seconds they revert to normal.

Any ideas??
[Galaxy S II Original Android Development] planetf1:
Had my first hang with k2-18 tonight.totally unresponsive on lock screen for minutes. had to force reboot
[Galaxy S II Original Android Development] cipetonk:
try using kernel cleaning script first & reflash k2-18
[Galaxy S II Original Android Development] singingshiver:
Been using speed mod for around 5 days with no issues and great battery life. Today my battery drain is silly, hardly used the phone ans lost 25% in 4 hours. I have changed nothing in my configuration. Betterbatterystats shows no wake locks above 0.3%. Battery usage shows high android is. Any ideas?
[Galaxy S II Original Android Development] komsa:
Every custom kernel for i9100 has some problem......every kernel Chef succeded to make faster and smoother kernel but every single one has a problem...that's why i went back to stock......battery life is most important for me because i9100 is so strong (stronger then my netbook and my iPad2)till then i'll go back to stock :)
[Galaxy S II Original Android Development] KeesStolk:
Since using K2-19 test1 i noticed that at the top of my battery usage is Android OS.

Cann't remember if this was the case with K2-18 finale or with CF kernel on KL1 rom.

Reflashed K2-18 and will see tomorrow if it's still at top.

@Hardcore, what's your opinion about the cleaning script??

http://xdaforums.com/showthread.php?t=1363738&highlight=cleaning+script
[Galaxy S II Original Android Development] ithehappy:
Tegrak OC works well

High percentage of A-OS is a well known bug in GB or Android I should say. Some users of Siyah claimed that the bug was gone and then it came back, lol. I don't think it can be removed with a Kernel.

I always use Kernel Cleaning Script before flashing an kernel, all I can say there is no harm in doing that and it also saves time of doing Wipe cache and Dalvik manually. So no problem with that I guess.

Someone here said that Tegrak OC didn't run/supiort with this kernel, well I tried the free version from market and it worked perfectly fine! OC'ed easily to 1.425 GHz. On K-19 Test 1.

So I can confirm it does work.
[Galaxy S II Original Android Development] :
You are wonderful mate, thank you for sharing your tests results! :)

Sent from my SGS2 - Hyperdroid v5.2 | Vertumus ICS Theme |
[Galaxy S II Original Android Development] gorillaCF:
i've experienced such cases before. but mine happened due to a change in modem. did u change ur modem during these 5 days?

or is it that some of your apps are running in background (like facebook) ? check if the phone is awake?

are u saying stock kernel has a better battery life as compared to custom kernels? just curious.

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

anyway, i think k2-19-test1 is really performing very well for me. played games, surfing the net, can last me about 28 - 30 hours with abt 3 hours of screen time.
[Galaxy S II Original Android Development] Igor 3:
K2-19-test1 is really lags on my phone. For example when i put live wallpaper that goes from left to right on its own its really laggy. Dont know why, made clean instal, used kernel clenning script?
[Galaxy S II Original Android Development] qureyoon:
Hi gorillaCF,

Which modem you recommend for Singtel? Am currently on XXKP8.
[Galaxy S II Original Android Development] gtda:
Wouldn't mind giving k2-12 test Ago if anyone has the file. I've had issues with my screen randomly flashing to a bright blue or purple with k2-19

Sent From The Bermuda Triangle
[Galaxy S II Original Android Development] jsompis:
With K2-19T1 , LOUDER and Tegrak OC Ultimate work fine here.
[Galaxy S II Original Android Development] tonyhunglow:
K2-19T1 broken link? I cant download! Help please.
[Galaxy S II Original Android Development] Jonjungle:
Try KL1, had issues with KP8 myself.
[Galaxy S II Original Android Development] singingshiver:
I've no wakwlocks or screen on time that is unusual. No app updating in background and no modem changes.

I have restarted my phone and it seems OK now. Running checkrom v4. Previously used siyah for about a month with no issues.
[Galaxy S II Original Android Development] It_ler:
Results for SpeedMod / Phenomenal / void / N.E.A.K. / Siyah / stock kernels

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

For all custom kernels, I was running on Frankenstein XWKL1 ROM (Modem: XXKL1).

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

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

For void.echo I enabled the UV - nothing else.

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

Just tested SpeedMod K2-19-test1 and added its results.

Here are my current results:

Benchmarks

Battery stats

For me (on my phone with my normal usage), SpeedMod K2-19-test1 is smooth, not the best for over night usage, but so far the best kernel for mixed usage.

So, thanks again hardcore !
[Galaxy S II Original Android Development] RyanParty:
Thanks for this. Good information. +1
[Galaxy S II Original Android Development] gorillaCF:
hello. i'm using DXKL1 now. previously was on KH3. super satisfied with DXKL1. maybe you should give it a try :p

ok your post reminded me of 1 incident i encountered.

charged fully, went to slp and woke up to approx 70% batt left. about 7 hrs of slp, 30% gone. initially i thought something was wrong too, and then i checked BBS CPU Spy, everything shows a positive result.

what i did next was to clear cache, wipe dalvik. then i reboot my phone. that night tried again, and battery drained was 1% over 7 hrs of slp. never encountered such problem anymore from now onwards.

maybe next time anyone with sudden battery drain can try clearing cache/dalvik and give it a try again :)

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

thanks for the results lt_ler. i have to agree with you, k2-19-test1 is really great on my device.
[Galaxy S II Original Android Development] morg01:
Personally i've gone back now to test 13, I kept getting freezes with K2-18 when the phone was low on power (seemed to be anything lower than 20%)

I would unlock the phone and basically get a BSOD, its happened more than a few times now, and 19 test 1 isn't smooth for me at all. . . . .

might try installing KL1 and trying again to see how things go . . .
[Galaxy S II Original Android Development] BrandoHD:
Did you check only for partial wakelocks, if you did, you didn't check everything, in the better battery stats app, you can check under "other" and also under "kernel wakelocks"

Usually, unexplained battery loss that cannot be attributed to apps holding wakelocks are caused by something like "svnet" or svnet dormancy" keeping your phone awake.

Sent from Samsung Galaxy S II
[Galaxy S II Original Android Development] darren2190:
Can you develop kernel for galaxy note?
[Galaxy S II Original Android Development] alexkno:
svnet dormancy is the normal fact that something tries to sync often. Whenever this is carried out, for a certain time (I guess 40 seconds) phone doesn't go to deepsleep but is kept awake. The issuer of the problem said there is no app syncing.

What I faced often now on Android 2.3.6 was the calendar going wild and keeping wakelocks for AlertService. There is is a fix here on xda that solved that for me, but this was clearly stated under partial wakelocks.

Can just say: with K18 (and phenomenal 2.1) I didn't face any battery drain besides those triggered by wakelocks, so for me it works great (on KK5 and also on XXKL1)
[Galaxy S II Original Android Development] ithehappy:
Had to switch to elsewhere :(

Couldn't take the modified color saturation anymore, still this remained my favorite.

Swyping from my GT-I9100 via Tt
[Galaxy S II Original Android Development] BrandoHD:
If you were to read my post properly, you would realize that what I provided were examples of what can be keeping the phone awake excluding app wakelocks which is listed under "Partial Wakelocks" in BBS.

A lot of people neglect to check the "kernel wakelocks" or the "other" options in BBS, No where did I say that svnet dormancy was definitely the problem as I do not have the device so that would be very presumptuous of me, I just used svnet dormancy as an

example

hence the statement: Usually, unexplained battery loss that cannot be attributed to apps holding wakelocks are

caused by something like

"svnet" or svnet dormancy" keeping your phone awake.

Either way, the information was meant to assist that particular user to check, he can then report back what he found on his device

See HERE for another

example

of a wakelock other than an app wakelock that will not be listed under "partial wakelocks" in the BBS app, it is listed under "kernel wakelocks" - this was fixed by hardcore
[Galaxy S II Original Android Development] obionenairobi:
shows you I am color blind as I don't see any difference between stock and speedmod

For once it is a blessing :-)
[Galaxy S II Original Android Development] planetf1:
Just had my second "hang" with k2-18 on kl1

As before the system was unresponsive. Seemed to hang with a clock 20 mins out of date. It wasn't completely dead in that at one point the power menu popped up, but was totally unresponsive - even for minutes.

Exactly the same behaviour for before.

May try k2-19 test instead (or backup and play with the bezke ics rom for tonight first!)
[Galaxy S II Original Android Development] singingshiver:
Thanks for the help guys....same thing happened today to the missus phone (same config as mine). I have checked BBS but cannot see the option to check for kernel wakelocks...assuming I have an old version....does anyone have a link to the latest version?

*edit* dont worry ive found it....will keep an eye on it and look for kernel and other wakelocks if it happens again.
[Galaxy S II Original Android Development] It_ler:
Latest version is 1.5.

You can buy it from the Market ... or have a look here => http://xdaforums.com/showthread.php?t=1179809.

Remember to give a Thanks to the developer, donate or buy the app, if it is useful.
[Galaxy S II Original Android Development] ozzyita:
Hi hardcore, first of all I would like to thank you for your hard work! I only have one issue with 18, sometimes the screen does not go off and I have lock manually. Have you had this issue before? Or anyone else?

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[Galaxy S II Original Android Development] newHere:):
me (and also other people) had this screen issue...

i moved back to k2-16 and this issue was gone
[Galaxy S II Original Android Development] komsa:
........yes and and if you live your phone in another room or office your screen will remain lighten and in a few hours,you will be surprised how your battery got consumed :)
[Galaxy S II Original Android Development] newHere:):
and the worst part:

your screen may burn in the picture
[Galaxy S II Original Android Development] ozzyita:
So it's not only me that has this issue. I'm sure hardcore is aware of this!

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[Galaxy S II Original Android Development] hardcore:
I can't reproduce this, and I don't think it can be caused by the kernel. Did you also change rom or use some app that may cause it?
[Galaxy S II Original Android Development] me_ashman:
I agree, but I switch off wifi and 3g late at night and mine doesn't drop any percentage nor have wake locks (kk2 room with kp8 modem) overnight. I had one reboot today when I used Bluetooth that's it though.
[Galaxy S II Original Android Development] newHere:):
i tried two different phones with two different roms and with K2-17test1 and K2-18 both phones have the same problem.

i switched back to k2-16 on both phones and the problem was gone...

i can't think about any app that can cause this problem...

thanks for your replay! :)
[Galaxy S II Original Android Development] knuckle03:
For those who have that light wont auto turn off issue can you please tell what rom you guys using? Im using sensation rom and havnt encounter that problem so far.
[Galaxy S II Original Android Development] newHere:):
i had this problem with Villain rom 3 and with SkarbnikROM 1.3

(SkarbnikROM is Rom with hebrew

http://xdaforums.com/showthread.php?t=1238126 )
[Galaxy S II Original Android Development] komsa:
i didn't change ROM(Stock deodexed XWKK5).....sometime's happening sometimes not but i don't have this problem with K2-16,the thing is i am not relaxed with K2-18 cause i always have to pay attention......anyway,thanks for your work.... :)