KT-SGS4 Kernel


  1. Shotgun84

    Shotgun84 Well-Known Member

    KT-SGS4 Jellybean kernel features
    •Must have a Touchwiz Rooted ROM
    •Linux kernel 3.4.54
    •Samsung open source
    •Optimized kernel configuration
    •unsecure root adb
    •Voltage interface
    •CPU Overclocking
    •CPU Underclocking
    •Boots on stock table (USE KTweaker app to enable OC steps all the way to 2322 Mhz. BE AWARE THAT I WAS VERY CONSERVATIVE ON THE LOW SIDE OF THE OC STEPS, SO THEY WILL NEED SOME TWEAKING!)
    •KTweaker app for kernel control
    •KTweaker Widget
    •Schedulers (CFQ, BFQ, VR, SIO, NOOP, DEADLINE, ROW, FIFO, FIOPS)
    •GOVERNORS (ktoonservativeq, intellidemand, msm-dcvs, wheatley, userspace, smartassh3, slp, powersave, pegasuq, nightmare, interactive, dancedance, conservative, badass, asswax, adaptive, abyssplug, performance, ondemand
    •Thanks to Talustus we now have exFAT for Touchwiz and AOSP



    I'd noticed that when playing that helicopter sample video with Adam and Cf-auto root the playback would appear choppy (no pun intended, ok it was) and would pause every 5 to 10 seconds so I went hunting. I didn't really look too far as this was the next one I tried and I have to say I'm impressed. Due to a problem with 3minit where I'd had it set up to turn the torch on by long pressing home when on the lockscreen my flashlight was on whenever I took my phone out of my pocket. I would've expected my battery to take a much bigger hit than it did because of this but it held out nicely. Everything seems nice and smooth and video playback and online streaming works flawlessly. There's also more options to tweak than you can shake a stick at, all customizable using the KTweaker app which gets installed when you flash. Maybe a little too many for me until I've done a bit of reading so I've basically got it set up with the devs settings that he posted in his thread.

    Original thread and download

    http://forum.xda-developers.com/showthread.php?t=2297379

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    dynomot, Calc, silentwitness and 2 others like this.
  2. Shotgun84

    Shotgun84 Well-Known Member

    There have been a couple of updates and there's now a version for TW 4.3

    Change Log 8.4.2013
    1. Linux 3.4.55
    2. Linux 3.4.56
    3. OTA Option in KTweaker so I can pump out updates when out of town and don't have to post a thing NOW !!!!!!!!!!!! (Under Extras, gives you option to auto check, auto download, option to click on newly downloaded zip or and old one and go right to Recovery and flash it for you, option to decide whether to store in internal or external memory, option to provide files for before and after flashing the kernel and a few more options...)
    4. Sync'd up with CM10.2 with the MH1 update
    5. File naming convention change, so pay attention to what you are flashing (Added the 4.2 and 4.3 piece so you know android version and moved things around for TW/AOSP and carrier)

    Change Log 8.3.2013
    1. Touchwiz Android 4.3 is BORN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    2. Tested on KANGABEAN 4.3 version and working goooooooood
    Sydney99 likes this.
  3. Sydney99

    Sydney99 Well-Known Member

    Ok shotty, couldn't resist the temptation, giving it a go. Brilliant tweaks app, loads of options and really easy to use. So far so good...
  4. Calc

    Calc Well-Known Member

    nice work :)
  5. Shotgun84

    Shotgun84 Well-Known Member

    There have been three updates to the kernel. I only flashed the latest about an hour ago so it's too early to really say but it seems as smooth and as stable as the others. It was the first time I used the kernels built in ota checker to check for and install an update. This found and downloaded the kernel with no problem but the flash aborted after booting into recovery mode. I have no idea why though as the phone rebooted before I had time to read what it said. A boot straight back into recovery and a manual flash had no such problems. If this version turns out to be as stable and with as good battery life as the rest you won't be getting any complaints from me. The only two things I could fault the previous versions on is that I had a couple of random reboots when undervolting by 100 but then that's my bad as I think the kernels already undervolted. Going to a uv of 50 solved those problems, I may have to try 75 though and see if there's any issues. The other thing is that when listening to music through my bluetooth headphones there would be an occasional stutter. This was caused by the screen off profile so should now be fixed as the latest kernel an option to keep the media mhz separate from the screen off.

    Change Log 8.20.2013
    1. Update Ramdisk for CM compatibility
    2. Linux 3.4.58
    3. Linux 3.4.59
    4. Added Mhz minimum setting while playing media for people having trouble playing music while screen is off (Option is in Extras Screen)
    5. Using official exFat from Samsung source
    6. A bunch of re-cleanup on TW version
    7. Merged in 4 commits from CM from today 8/15
    8. Added abyssplugv2 governor from abyss kernel
    9. Merged in all CM updates from last 3 days
    10. Linux 3.4.57
    11. KTweaker: Added option to re-download when you have the current version when manually checking for update
    12. Ramdisk updates

    Change Log 8.9.2013
    1. KTweaker: Added option to view change log in "Extras->OTA Control" screen
    2. KTweaker: Fix issue with external sdcard selection in OTA
    3. KTweaker: Couple other clean up things

    Change Log 8.7.2013
    1. CM sync
    1. ASoC: msm: FENS Support for VOIP calls
    2. video: msm: Increase video encoding output buffer size
    3. msm: display: command mode panel release fence
    4. msm: mdp: Change msmfb kworker to kthread
    5. msm: mdp: Update sync pt. behaviour
    6. msm: rotator: Wait for the pending commits in finish IOCTL
    7. msm: kgsl: Wake up gpu on kgsl_ioctl_timestamp_event only if necessary
    8. msm: kgsl: Use no GPU fault tolerance flag passed by UMD driver
    9. msm: kgsl: Map sync lock variables to every pagetable
  6. Rudedawg

    Rudedawg Well-Known Member

    At last overclocking. What does the cpu boost to ?
  7. Shotgun84

    Shotgun84 Well-Known Member

    If you use the KTweaker app the oc stops at 1890mhz, actually is that any oc, that's pretty much stock isn't it? There are reports that it can handle more than that though. With some tweaking of the volts it's apparently possible to get it up to 2.3ghz

    http://forum.xda-developers.com/showpost.php?p=41878988&postcount=6
  8. sntaylor

    sntaylor Well-Known Member Contributor

    I could have sworn I got 2.3 with k tweaker, but I'm not using right now....
  9. ironass

    ironass Well-Known Member

    Shotty's right. I gave the KT-SGS4 kernel a whirl a while back and although KTweaker shows that you can over clock above the stock 1890MHz, if you try it without changing the voltage, it will shut down.

    Personally, I cannot think of a better way of frying your phone, short of sticking it in a microwave! :ahhhhh:
  10. Rudedawg

    Rudedawg Well-Known Member

    Ok standard overclock was up to 2.3 without fiddling with voltages. I tried 4.3 but it soft bricked my phone. Wouldnt load recovery. Phone would boot but with black screen and sounds. Managed to get back into Recovery and flash 4.2.l2 version and it worked fne.

    Used the voltage control app
  11. Shotgun84

    Shotgun84 Well-Known Member

    Yeah my bad, you can oc with the KTweaker app. I forgot to tick enable oc steps:stupid:
  12. Shotgun84

    Shotgun84 Well-Known Member

    Did I fall asleep and wake up in a parallel universe or something:D
  13. Rudedawg

    Rudedawg Well-Known Member

    The KT tweaks app seems very limited though. Use Voltage Control app from google play and everything is unlocked. You can overclock above what KT allows. At your peril ofc. :)


    Wait just read shottys last post. 2322 is highest overclock.



    EDIT: Just had my first shutdown. Even on the Kernal devs own govenor. Set to 2032 and whilst playing Real racing phone shutdown.
  14. Rudedawg

    Rudedawg Well-Known Member

    My overnight. Spent about 10 % playing games then left it. Not too shabby and look at them wakelocks.

    [​IMG]
  15. Rudedawg

    Rudedawg Well-Known Member

    Despite the rather impressive battery , with regards to my lack of knowledge of voltage adjustments and cpu govs I have decided to go back to stock kernals. I had been getting way too many random phone crashes/resets. This is promising if someone gets the adjustments preset.
  16. Shotgun84

    Shotgun84 Well-Known Member

  17. Rudedawg

    Rudedawg Well-Known Member

    I was used to comfortable overclocks on the S2. I didnt have to worry about voltages. Unless there is something similar here Im not interested.
  18. Shotgun84

    Shotgun84 Well-Known Member

    It's still quite simple. All you need to do is go to the voltage settings in the KTweaker app and slide the voltage up by 50 for any step over 1998mhz and press apply. Job done. Although personally I dont see a need to overclock as the phones plenty fast enough as it is. :)
    Rudedawg likes this.
  19. ironass

    ironass Well-Known Member

    ktoonsez kernels for 4.2.2, 4.3, 4.4.*, for Touchwiz, AOSP and Google Edition, ROMs, updated! :)

    "Change Log 01.13.2014
    1. ktoonservativeq: Added new tunable called super_conservative. When enabled (enter a 1) this will dramitacally reduce the bouncing effect from Min Mhz and the amount of hotplugging. Performance may take a hit for the really picky user but 95% of the people that have been testing say its not enough to bother them.
    2. Linux 3.4.76
    3. Fix for TW 4.3 slow motion recording (thanks @elesbb for testing for me ).
    4. Tweaked disable hotplugging while music/video is playing option.
    5. Updated my setting in Post 3 so go check it out.
    6. Added pac framework compatibility to AOSP 4.4
    7. KTweaker 5.1 for all versions.
    "

    Download

    Source
    Sydney99 and Hawker like this.
  20. Sydney99

    Sydney99 Well-Known Member

    Which one for Echoe
  21. ironass

    ironass Well-Known Member

    If I was truly sarcastic, Syd, I would ask which Echoe ROM are you referring to as they have JB, 4.2.2, also JB, 4.3. Not to mention KitKat, GE and KitKat stock.

    However, unless you have been a busy little sloth overnight and changed your ROM... you are on Echoe KitKat, v2.2, Google Edition. In which case you will need to flash... the Google Edition version. ;)
  22. Sydney99

    Sydney99 Well-Known Member

    ironass, sarcasm, surely no, the 2 never go together.

    cheers, just a little unsure as friedrich described it as an AOSP type rom. so maybe a stupid question, but certainly not my most stupid to date!!!
  23. Sydney99

    Sydney99 Well-Known Member

    Now, I know I should always trust uncle ironass, you are in many ways similar to wife (you are always right and there's nothing sexual between us)....but when I go to download the Google edition, it describes it as being for tw ge. And Echoe kit Kat ge is not a tw rom.......
  24. Hawker

    Hawker Well-Known Member

    Generally if the ROM specifies Google Edition, then use the GE ROM.
    Use the AOSP kernel on ROMs such as SlimKat.

    Not sure why -TWGE- is in the file name. Perhaps I'll ask.

    KT's TW kernels are named like the following example:
    KT-SGS4-JB4.3-TW-INTL-01.13.2014.zip
    volimte21 and Sydney99 like this.
  25. Sydney99

    Sydney99 Well-Known Member

    :congrats::congrats::congrats::congrats:

    good work hawker, showing uncle how to reply properly

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