yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] jlevy73:
I'm not the OP but I have flashed more kernels than I care to admit. If I had to travel for 2 weeks I would use CF-Root LPT kernel. It's stock kernel, rooted, and you almost guaranteed that it will act reliably. It also has very good battery life. The problem with Phenomonal kernel is that the extreme version is undervolted quite a bit which might cause some instability. He has less UV versions but still any amount of UV which are different from stock voltages might cause issues (depending of course on your device). I am just giving you the very conservative approach for say you're traveling through Tibet and don't have the ability to access XDA
[Galaxy S II General] PholkLorr:
Im glad youre finally testing this kernel. Been one of my go-to kernels for good battery life and stability, although it is a tad jerky compared to other kernels (depends on the ROM i use too. If i use Neatrom, the jerkiness is more pronounced than Chameleon rom, where the jerkiness is almost not noticeable).

I would use Phenomenal Extreme but it seems that the current ROM (chameleon) im using isnt able to handle the UV on the kernel and would sometimes hang the phone.

Another issue with Speedmod and Phenomenal is that the CWM 3.00 app doesnt have the backup and restore functions when using these 2 kernels, nor do they have touch support in recovery mode.
[Galaxy S II General] It_ler:
As jlevy already gave you the conservative answer, I can give you another answer:

I would flash Phenomenal 6.1 Exteme on my stock XWLPT ROM ATM, as it is stable on my phone and has best battery life ... which might be usefull even in Tibet when you don't have a power plug/supply every day.

But I would recommend to install Mobile Odin app and save CF-Root kernel for XWLPT on my phone.

So, just in case I experience some issue with Phenomenal, I can easily flash CF-Root kernel on-device without the need to be connected to the internet.

But it's your choice and you should have tested the kernel some time before traveling.
[Galaxy S II General] It_ler:
DM 1.1.0:

Moderate battery life in night use.

DM 1.1.0: Battery loss of 0,88% per hour, Awake: 5,9%, Deep sleep: 94%

Slightly worse than on DM 1.0.0 kernel, but battery life in mixed usage is more important.
[Galaxy S II General] PholkLorr:
ltler, would it be fair to say that while Phenomenal Extreme has the best battery life overall, that's because its basically a heavily UVed speedmod, and it's being compared to other kernels that are mostly on stock settings with no UV.

If you UV the kernels that are close to Phenomenal Extreme, its possible that they will outperform it in the battery life department right?

I noticed that the only UVed kernel you tested was siyah 4.1rc with magicconfig UV, although strangely, its battery life was even worse when UV.
[Galaxy S II General] It_ler:
Sometimes UV does not lead to a better battery life ... yes it's strange.

But that's my experience. Maybe caused by my settings and/or usage ... I don't know.

That's why I prefer testing all kernel as they are by default - kind of "out-of-the box".

And there are more pre-UVed kernels in my list, such as Shun Andromeda and DM kernel.

There are already some tweaks and undervoltings integrated in these kernels too, but not as extreme as in Phenomenal Extreme.

So it could be possible that a non-UVed kernel will have a better battery life than Phenomenal Extreme ... but I didn't have found it for my phone and my normal usage yet.

And as I am a little bit lazy, I am not motivated enough to test all possible combinations of tweaking (governors, io schedulers, UV, etc.).

I gave SiyahKernel v4.1rc1 a try with MagicConfig, but I was a little bit disappointed with its battery life in mixed usage.

Maybe with a "heavier" usage than mine, the difference to the advantage of an UVed kernel will be bigger ...

Something to check for somebody with heavier usage.
[Galaxy S II General] stoyanow:
Anybody tried this ? I am with 0.31 and it works very good from last night ..
[Galaxy S II General] It_ler:
Maybe you will get more responses when posting this question in the Pheneomenal thread.

I am on Android 4.0.4 and used only Phenomenal 6.1, which seems to be the same as 0.31, as both are based on SpeedMod K3-31.

Geroxx has build 0.31 intensive, as this has less extreme UV than Phenomenal Extreme but more UV than Medium version.

And he compiled 0.27B based on SpeedMod K3-27b for Android 4.0.3 users, as fenomeno83 can not compile a corresponding Phenomenal kernel ATM.
[Galaxy S II General] californicated:
Where did you read about Galaxian and Dream Kernel being undervolted by default? :confused:
[Galaxy S II General] stoyanow:
I tried Phenomenal 6.1 Extreme but my phone stucked at BOOT logo. Then tried 0.31 and it work fine with LPT ROM.
[Galaxy S II General] It_ler:
Oh, sorry. My fault.

About the DreamKernel I was wrong.

I understood the "various performance/battery saving Kernel Tweaks" and "Dynamic CPU/GPU Voltage Settings (Undervolting)" in its feature list so that it is already slightly undervolted. But it isn't.

And I mixed up Galaxian with DM kernel.

In the feature list and change log of DM kernel there is written "Undervolting" ... but I haven't checked it yet.

And Shun Andromeda has -50mV in default profile too.

So I will edit my prevoius post to avoid misunderstandings.

EDIT:

DorimanX kernel seems to be undervolted too:

From first post of its kernel thread:

"Support undervolt/overvolting via sysfs interface/apps interface. and ExTweaks (750-1500mV) (all set to best)

Be very careful with voltage settings! (all set already)"

But I don't have checked this either.
[Galaxy S II General] It_ler:
DM 1.1.0:

Nearly the same battery life in mixed usage like DM 1.0.

DM 1.1.0: Battery loss of 2,00% per hour, Wifi: 100%, Awake: 16,8%, Deep sleep: 83%, Screen: 10,0% => loss*(1-screen): 1,80%

So I have to continue my kernel tests again.
[Galaxy S II General] It_ler:
Shun Andromeda 2.0.7e:

I just flashed Shun Andromeda 2.0.7e on my stock XWLPT ROM.

It is stable and very smooth on my phone.

Color look a little bit blueish - white is very light blue.

Camera does only show a black screen - but that's a know issue of this kernel for Android 4.0.4 ROMs - could be easily fixed with Tungstwenty's Camera-fix zip file.

Everything else seems to work fine so far (wifi, bluetooth, GPS, auto-rotate/senors, fm radio, etc.).

Now running some benchmarks - first post will be updated soon.

EDIT:

Yet another kernel with this new battery charging animation without 100% when fully charged while phone is turned off.

Although I like the charging animation, I would prefer a small "100%" when battery is completely charged, and not only a fully green battery.

Nevermind ... maybe I am the only one who wants it.
[Galaxy S II General] It_ler:
Shun Andromenda 2.0.7e:

Its deep sleep and battery life in night use is very good.

Shun Andromeda 2.0.7e: Battery loss of 0,75% per hour, Awake: 5,0%, Deep sleep: 95%

Let's see its battery life in mixed usage now.
[Galaxy S II General] It_ler:
Shun Andromeda 2.0.7e:

It has also moderate battery life in mixed usage.

Shun Andromeda 2.0.7e: Battery loss of 1,97% per hour, Wifi: 100%, Awake: 16,6%, Deep sleep: 83%, Screen: 9,8% => loss*(1-screen): 1,78%

So I have to continue my kernel tests to find a better kernel/ROM combination for my phone and my usage.
[Galaxy S II General] elmo198:
I'm sorry, but the winner is???
[Galaxy S II General] It_ler:
For every user there might be another winner.

For me, the best combination for kernel and ROM on my phone with my normal usage is ATM Phenomenal 6.1 Extreme on stock XWLPT ROM.

It is stable on my phone, its performance is OK and it has the best battery life for my normal usage.

I am always searching for the "next" best balanced kernel/ROM combination.

That's why I am testing and testing and testing ...
[Galaxy S II General] It_ler:
I changed my mind.

As current version of SiyahKernel (v4.1.2) and of DorimanX (v5.70) seem to have some SOD issues, I decided to skip these versions and wait for the next stable versions.

So I flashed Phenomenal 6.1 Extreme (restore the original camera files with Tungstwenty's camera-fix-restore zip file) back to my stock XWLPT ROM, and try to relax and enjoy my phone (and the weekend) a little bit ;)
[Galaxy S II General] AllSeeyinEye:
For the last couple of days I was wondering if you ever really enjoy your phone, for you have been testing different kernels for the last weeks now... Never came to writing it down, though. Glad my question is already answered :D
[Galaxy S II General] PholkLorr:
Hes definitely enjoying flashing his phone. Thats the part to be enjoyed about android right? Just flash and flash all the way. Cant do that with Iphone. ;)
[Galaxy S II General] hausmanis:
By far the best combo for me to

Thx for the great work wouldnt have found this combo without your help
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme:

Another battery life "high score" in night use.

Phenomenal 6.1 Extreme: Battery loss of 0,66% per hour, Awake: 4,3%, Deep sleep: 95%

Oh, it will be difficult for other kernels to beat these results ... for battery life.
[Galaxy S II General] 666fff:
0_o
[Galaxy S II General] bobdoblo:
But there will never be an end, well only when no one develops for the s2 any more!

---------- Post added at 01:12 PM ---------- Previous post was at 01:11 PM ----------

But there will never be an end, well only when no one develops dor s2 any more!
[Galaxy S II General] It_ler:
Correct ... it's a "never-ending-story".

So I am preparing now for the next kernel test.

Have to save a nandroid backup of my current system and fully charge the battery.

Tomorrow I will choose the next kernel to test ... latest DorimanX, Siyah, Shun Andromeda or DreamKernel ?!
[Galaxy S II General] It_ler:
SiyahKernel v4.1.3:

I just flashed SiyahKernel v4.1.3 on my stock XWLPT ROM.

It is very stable and feels smooth on my phone - completely default settings.

Only vibration seems to get lost sometimes - I saw some comments in kernel discussion thread ... so I am not the only one.

(EDIT: Case of the vibration issue was found and will be fixed in next version => http://xdaforums.com/showpost.php?p=31149249&postcount=12889)

Everything else seems to work fine (camera, wifi, bluetooth, GPS, fm radio, auto-rotation/sensors, etc.).

Default backup method in its CWM6 is tar ... good for compatibility with older CWM versions.

Benchmark results are already added to first post ... nothing special, but very good results in CF-Bench.

Now I prepare for battery tests.
[Galaxy S II General] It_ler:
SiyahKernel v4.1.4:

Saw SiyahKernel update to v4.1.4 and flashed this version to my stock XWLPT ROM.

Vibration issue is fixed.

Everything else seems to be working fine as before.

Will continue my tests with v4.1.4 as this is latest kernel version now.
[Galaxy S II General] It_ler:
SiyahKernel v4.1.4:

Moderate battery life in night use.

Siyah v4.1.4: Battery loss of 0,96% per hour, Awake: 5,8%, Deep sleep: 94%

I am more curious about its battery life in mixed usage.
[Galaxy S II General] It_ler:
SiyahKernel v4.1.4:

Moderate battery life in mixed usage too.

Siyah v4.1.4: Battery loss of 1,90% per hour, Wifi: 100%, Awake: 16,9%, Deep sleep: 83%, Screen: 10,1% => loss*(1-screen): 1,71%

It is good but not best on my phone for my normal usage.

So I will add benchmarks results to first post, then flash new XWLPX stock ROM.

Let's see how this performs.

EDIT: Benchmark results for SiyahKernel v4.1.4 added to first post. Nearly the same as for SiyahKernel v4.1.3. Only CF-Bench shows new high score.
[Galaxy S II General] It_ler:
Stock XWLPX:

I just flashed stock XWLPX ROM using Mobile Odin app with my current CSC (XEULPA).

As I want to test stock XWLPX kernel, I just rooted the stock ROM with Method 1 from here => http://xdaforums.com/showthread.php?p=28178105

Everything works fine so far (camera, wifi, auto-rotation/sensors, blurtooth, GPS, fm radio, etc.) - only the serial number is still 00000000.

It is very stable and feels very smooth.

EDIT:

Benchmark results added to first post.

Nothing special, some good results but no high scores.

Now let's check its battery life.
[Galaxy S II General] bluefa1con:
Play safe dude no one knows if lpx has super brick bug
[Galaxy S II General] It_ler:
Yes, I will take care about what I am doing - and no wipes. But I have no CWM, just stock recovery.

Anyway, I am sure that XWLPX has the brick-bug ... as all other Android 4.0.4 ROMs for our phone.
[Galaxy S II General] It_ler:
Stock XWLPX:

Moderate battery life in night use.

XWLPX: Battery loss of 0,89% per hour, Awake: 6,1%, Deep sleep: 93%

It is good, but not the best I had on my phone.

Maybe I have to do a second battery cycle after finishing the mixed usage battery test.
[Galaxy S II General] whiskerp:
It does have MMC_CAP_ERASE set.
[Galaxy S II General] malavan:
Which one had the best deep sleep on your phone
[Galaxy S II General] It_ler:
Have a look at my first post.

Under Battery stats there is the listing for night use.

I had best deep sleep with SiyahKernel v4.1.1 (about 96%) although I have wifi, Skype and Talk running all the time.

But best battery life during the night I had with Phenomenal 6.1 Extreme (-0,66% / hour).
[Galaxy S II General] dokez:
cf-root for XWLPM

Hello guys.

I have:

PDA: I9100 XWLPM - CL837163

PHONE: I9100XXLQ6

CSC: I9100OXELP8

What cf-root would anyone recommend?
[Galaxy S II General] It_ler:
As I was on XWLPM stock ROM, I used CF-Root-SGS2_XX_OXA_LQ5-v5.6-CWM5.zip (UPDATED) to root it.

Worked like a charm.

Good luck !
[Galaxy S II General] It_ler:
Stock XWLPX:

Good battery life in mixed usage.

XWLPX: Battery loss of 1,81% per hour, Wifi: 100%, Awake: 17,3%, Deep sleep: 82%, Screen: 10,3% => loss*(1-screen): 1,62%

It's nearly the same battery life than for stock XWLPT ROM on first battery cycle.

So I will check stock XWLPX ROM with CF-Root kernel for XWLPX ... maybe it will have a slightly better battery life on the second battery cycle.
[Galaxy S II General] elchueko:
Someone test CF-Root-SGS2_XX_OXA_LQ5-v5.6-CWM5 (UPDATED)?, is DISABLED CAP_ERASE (No superbrick bug)?.

Thanks.
[Galaxy S II General] It_ler:
I had this kernel and no issues at all ... but as Chainfire only adds SuperSU + BusyBox + CWM recovery + CWM Manager app to the stock kernel, it probably still has the CAP_ERASE flad enabled.

Chainfire said that he tried to add a "safe" CWM recovery, but we should be cautious anyway.

Only wipe when really needed and if, you should flash a "safe" kernel (such as latest SpeedMod or Siyah) first.
[Galaxy S II General] It_ler:
Stock XWLPX with CF-Root:

I flashed CF-Root v5.6 for XWLPX on my stock XWLPX ROM. Here are its results in night use.

XWLPX (CF-Root XWLPX): Battery loss of 0,79% per hour, Awake: 5,8%, Deep sleep: 94%

As it was the second battery cycle on XWLPX, the battery life is better than in frist run. Seems to be a really good and battery freindly ROM version.
[Galaxy S II General] It_ler:
Stock XWLPX with CF-Root:

Excellent battery life in mixed usage on second battery cycle.

XWLPX (CF-Root XWLPX): Battery loss of 1,57% per hour, Wifi: 100%, Awake: 15,9%, Deep sleep: 84%, Screen: 10,3% => loss*(1-screen): 1,41%

It's the best battery life for a stock ROM since my "good old" XWLPD on my phone.

So it will be my new base ROM for further kernel tests.
[Galaxy S II General] drahmed86:
so which is better XWLPX or XWLPT????
[Galaxy S II General] It_ler:
On my phone both have nearly the same benchmark results, both are very stable and feel smooth, but with my normal usage, XWLPX had a little bit better battery life than XWLPT.

So I will keep XWLPX as my new base ROM for further kernel tests.
[Galaxy S II General] drahmed86:
you're amazing thanx for ur reply
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme on XWLPX:

I just flashed Phenomenal 6.1 Extreme on my stock XWLPX ROM.

It is stable anf smooth on my phone.

Everything works fine (camera, bluetooth, wifi, GPS, fm radio, auto-rotation/sensors, etc.).

Its benchmark results are nearly the same like on XWLPT before ... some results are slightly worse, others are a little bit better.

Now I want to check its battery life on XWLPX in comparision to its battery life on XWLPT ROM.
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme on XWLPX:

Moderate battery life in night use.

Phenomenal 6.1 Extreme: Battery loss of 0,91% per hour, Awake: 5,9%, Deep sleep: 94%

Worse than for other tests of Phenomenal Extreme kernels. Ok, it's the result of the first battery cycle. Maybe I have to re-test it on a second battery cycle.

But I will finish mixed usage battery test first.
[Galaxy S II General] drahmed86:
Disappointed!!!!!
[Galaxy S II General] It_ler:
Hmm ... yes, a little bit.

But it was the first battery cycle, maybe the battery stats chip was still "stressed" and could not settle down enough to show reliable battery stats.

And this night was a little bit "shorter" than my usual nights. That has also influence on the results.

So I don't make a final decision about this kernel/ROM combination.

1. Finish mixed usage battery test.

2. Re-test on a second batery cycle.

Then we can discuss the results again.
[Galaxy S II General] Vihru:
so its that XWLPX bettter than XWLPT on battery life?
[Galaxy S II General] citytrader:
I have moved from LPU to LPX and I think LPX is worse in general or this is what I'm thinking about it at the moment
[Galaxy S II General] drahmed86:
+1 but i moved back to wanam 12.3(LPT) with phenom. 16.1 extreme

it's really fantastic combination in everything
[Galaxy S II General] fgenari:
Great thread, siyah + 4.0.4 here....
[Galaxy S II General] It_ler:
On my phone with my normal usage, XWLPX had a little bit better batetry life than XWLPT ... while performance and stability was nearly the same.

Might be different on other phones, in other regions, with different settings/apps/conditions.
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme on XWLPX:

Very good battery life in mixed usage.

Phenomenal 6.1 Extreme: Battery loss of 1,51% per hour, Wifi: 100%, Awake: 15,6%, Deep sleep: 84%, Screen: 9,8% => loss*(1-screen): 1,36%

Nearly as good as on second run with Phenomenal 6.1 Extreme on XWLPT ROM.

So I will run a second battery test run just to have same conditions for both kernel tests.

EDIT:

Here are some screenshots of my battery stats, as some users asked for it.

Unfortunately, I forgot to change the language to English before taking these pictures - they are in German ... sorry.

Bildschirm = Display
[Galaxy S II General] championc:
Which Governor and scheduler do you use in all tests ?

Looking for the best combination for best Battery Life.
[Galaxy S II General] CamoGeko:
Try Ondemand + NOOP.

Always a winning combination. ;)

Sent from my HTC One X
[Galaxy S II General] It_ler:
If it is not specified (in brackets), I always use the kernel's default settings.
[Galaxy S II General] ThetaSigma10:
great info buddy cheers
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme on XWLPX had exact same battery life in second battery cycle for night use.

Hmm ... GetRIL app shows that the RIL version does not match the modem version. Maybe I should update the RIL and try again?!
[Galaxy S II General] WhoIsJohnGalt1979:
Could u try updating the ril through getril app and revert if u r able to do so
[Galaxy S II General] It_ler:
Done ... let's see if it makes a difference.
[Galaxy S II General] citytrader:
Dont use Getril because development and will give you bad results, please go to this thread for the explanations:

http://xdaforums.com/showthread.php?p=31420068#post31420068

Rectification, after testing, the files in the script are the one that needs to be copied.

Regards!
[Galaxy S II General] It_ler:
And here it is - Phenomenal 6.1 Extreme on XWLPX after updating the RIL with GetRIL app in night use.

Phenomenal 6.1 Extreme: Battery loss of 0,83% per hour, Awake: 6,1%, Deep sleep: 93%

So it has a positive effect on my phone. But as it is only a little bit better than before, it could be a "normal" variation too. Maybe without any change, the battery life in night use would have been the same.

I will finish the mixed usage battery test and report back.

Then I think about citytrader's suggestion to update the RIL files manually ... and re-test my current system again.
[Galaxy S II General] It_ler:
Worse battery life in mixed usage after RIL update with GetRIL app.

So I will try manual update of all RIL files (from hawkerpaul's thread) and report back on my next battery cycle.
[Galaxy S II General] drahmed86:
So far,the best combination is STOCK LPT and phenomenal extreme or medium 6.1
[Galaxy S II General] citytrader:
@It_ler Use the Hawkerpaul script that adapt to your network, Hawkerpaul tested to modify the rild and it does not work, so

use the script posted in the first page, they are correct, with Getril you could get something not working or not matching.

Regards!
[Galaxy S II General] It_ler:
Already done and new battery test are running.

Will post my results as soon as the tests are finished.
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme on XWLPX has slightly better batery life in night use after manual update of modem and all RIL files (for XXLQ6).

Phenomenal 6.1 Extreme: Battery loss of 0,80% per hour, Awake: 5,9%, Deep sleep: 94%

Could also be a "normal" variation, but I will check its battery life in mixed usage before judging.
[Galaxy S II General] It_ler:
But its battery life in mixed usage is not better.

Phenomenal 6.1 Extreme: Battery loss of 1,70% per hour, Wifi: 100%, Awake: 17,0%, Deep sleep: 83%, Screen: 10,0% => loss*(1-screen): 1,53%

Even after manual update of all RIL files for my current modem XXLQ6, the battery life is worse than on plain stock ROM + Phenomenal 6.1 Extreme.

I will check the Pre-Rooted XWLPX and report back if something is changed.
[Galaxy S II General] citytrader:
Hello why dont you change the modem matching its ril!?
[Galaxy S II General] It_ler:
First I want to come back to completely stock settings.

So stock modem and stock RIL files from stock XWLPX ROM.

Maybe Samsung devs have put matching modem and RIL files together in their stock ROM?!

When I think that my system behaves "normal" again, I will continue my tests.
[Galaxy S II General] citytrader:
As I see in your signature, you are in Germany with O2, so LPX is for nordic operators and not for your operator, so I think you should modify ril+modem in version 4.0.4
[Galaxy S II General] It_ler:
Stock XWLPX ROM has XXLQ6 modem.

And it works fine here ... no issues on XWLPT and XWLPX ROM.

But if I recognize modem/RIL issues, I will try another moden/RIL.
[Galaxy S II General] It_ler:
Pre-Rooted XWLPX:

Its battery life in night use is slightly better than for stock XWLPX ROM on furst run.

XWLPX (Pre-Rooted): Battery loss of 0,84% per hour, Awake: 5,8%, Deep sleep: 94%

So I might be back on my stable base ROM.

Let's check the mixed usage battery life, and then I can redo my tests for Phenomenal.
[Galaxy S II General] It_ler:
Pre-Rooted XWLPX:

Its battery life in mixed usage is worse.

XWLPX (Pre-Rooted): Battery loss of 1,96% per hour, Wifi: 100%, Awake: 17,9%, Deep sleep: 82%, Screen: 10,5% => loss*(1-screen): 1,75%

Ah ... after Samsung Apps update there the update notification and Samsugn Push was enabled.

I have disabeld these options again and ... re-do the tests for Phenomenal 6.1 Extreme on XWLPX.

Maybe this was the reason for the worse battery life in mixed usage, and not the modem/RIL files.
[Galaxy S II General] It_ler:
Phenomenal 6.1 Extreme:

Its battery life in night use is very good with completely stock modem (XXLQ6) and RIL files.

Phenomenal 6.1 Extreme: Battery loss of 0,72% per hour, Awake: 5,9%, Deep sleep: 94%

Only on XWLPT ROM, Phenomenal 6.1 Extreme had a little bit better battery life in night use.

Now I am curious about its battery life in mixed usage ... in my re-test.
[Galaxy S II General] wiecho65:
It_ler: did you also made thread about kernel for S3?? Of course if you have the S3 now or you will buy in future??

best regards.