TUNED Kernel for N/O/P/Q - 20201021 - Full charging, no flickering, correct mA values

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Senior Member
Feb 28, 2014
I'm testing this kernel on crDroid 4.6.1 (Android 8.1/LOS based). I am a little worried about the charging process: after reaching 100% the charger + phone stay's very warm unlimitedly. So, I always have to keep an eye on the process to prevent the battery from possibly being damaged. This of course makes charging over night impossible or at least very risky.

What do you mean by "real 100%" anyways? 100% are 100% or am I wrong...?


Senior Member
Jun 3, 2016
I'm testing this kernel on crDroid 4.6.1 (Android 8.1/LOS based). I am a little worried about the charging process: after reaching 100% the charger + phone stay's very warm unlimitedly.
I never tested Android 8.1. With crDroid 6.10 (Android Q) charging the battery with the Tuned Kernel works perfectly. When the battery is fully charged, the charging process stops and the control LED goes out after a while. No warming can be detected.


Nov 5, 2017

How can I modify the kernel to limit the max. frequency to e.g. ~2700MHz? I using a tuning tool and it overwrites the adjusted frequency limit to the maximum adjustable frequency. The result is that the phone is getting very hot.


Senior Member
Jun 3, 2016
How can I modify the kernel to limit the max. frequency to e.g. ~2700MHz? I using a tuning tool and it overwrites the adjusted frequency limit to the maximum adjustable frequency. The result is that the phone is getting very hot.
I've been using the SmartPack Kernel Manager for a long time. With this app, the max. frequency can be set in the long term without any problems. The current version is available on Google Play.
Last edited:


Nov 26, 2014
hello @fbs good day, If I have the klte rom version installed on a device that is originally kltedv and everything works perfectly, which kernel is recommended for me to install?
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Very fast thanks to CPU OC. Performance is crazy on Lineage OS. ALMOST on par with stock Exynos 8895 in daily usage. But GPU issue remains. And it's a shame...could do 1,550+ on Slingshot.


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Jan 17, 2021
Im Getting in a boot look on my G900F and I don't wanna touch the phone cause I don't wanna lose any data, could someone please help me remove this Kernel ??

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  • 1
    Any chance to get an updated version to work with android 19-20?

    on our telegram group there were some beta versions with SOME of the goodies added
  • 61
    "A kernel is the central part of an operating system. It manages the operations of the computer and the hardware - most notably memory and CPU."

    It should be installed via Recovery (TWRP) over any LOS/AOSP 14/15/16/17-Based ROM. It doesn't need any tweaking with any app, just install it and use it.
    BUT you can use Boeffla Config app (available here on the next post) or Kernel Adiutor if you like tweaking.

    This kernel uses codes from other kernels, as you'd expect in an open-source community, most notably code from Boeffla, SmartPack, Lolz, Ares and Intelli-kernel

    It has UNIQUE features like:
    - a different "low memory killer" algorithm wrote by me. Extremely simple, but multiple apps can be killed in a batch!
    - zcache is disabled for really *freeing* up memory that was used for caching files
    - a different default cpu hotplugger. ALL kernels (even LOS/stock) relies on Qualcomm's vanilla MPDecision, I wrote my own
    - Tuned CPU governor (it's the default). It's basically the Interactive governor but with a LOT of tuning to match up with the tuned hotplugger. Did you know stock/los roms uses a multi-socket Interactive governor that doesn't match our phone's cpu?
    - many many many MANY compiler optimizations not found on boeffla kernel, LOS or anywhere else!
    - MANY unused code simply REMOVED to free memory and CPU. People ADD a lot of stuff on a kernel, I like to remove
    - compiled with 2019 GCC version 9.1 (instead of the ancient version 4.9 that EVERY ROM uses)
    - Your battery will be charged to "real" 100% like TWRP does

    - many unstable cpu and gpu governors and i/o schedulers removed. they only wasted space
    - ext4 tweaks
    - fair scheduler tweaks
    - removed 3 touch boosters code.. why so many? just to raise your clock on every single touch?
    - Maple i/o scheduler
    - lowered "read ahead" of files and inodes.. why would you read something you don't know you'll need?
    - lowered maximum i/o requests for lowering ram usage while writing to SD (internal or external)
    - removed a lot of DEBUG code.. why release a software with debugging code built-in?
    - removed network protocols we would never use
    - removed some compatibility code
    - removed dynamic fsync, why would anyone want to enable fsync in any moment anyway? it has been disabled by default linux kernel for decades!!
    - decreased commit DELAY of file changes from 20s to 5s, which is linux default. there's no advantage in keeping new/modified data on ram for too long

    And common features:
    - Max cpu voltage set to 1.4v
    - Min cpu clock set to 268mhz instead of 300
    - Max cpu clock set to 2995mhz instead of 2457
    - Max gpu clock set to 657mhz
    - Compiled to speed, not size
    - Voltage table for undervolting or overvolting
    - Charging level for AC, USB and Wireless charger can be set
    - LED fading control + brightness
    - zen, noop bfq and sioplus i/o governors

    Overall your phone will be snappier, and less battery hungry

    You can go back to your rom's default kernel by simply installing rom's .zip again. No need to wipe anything ever!

    Telegram Group: https://t.me/tunedkernel

    If your voice on recordings or whatsapp calls is too LOW, try my fix for that: CLICK

    XDA:DevDB Information
    TUNED, a LOS Kernel for S5 - Performance and Battery life together!, ROM for the Samsung Galaxy S5

    ROM OS Version: Android 10

    Version Information
    Status: Stable
    Stable Release Date: 2020-10-21

    Created 2019-01-28
    Last Updated 2020-10-23
    Tuned Kernel versions will be attached here, the build date is at the file name.

    com.ktoonsez.KTmonitor.1.apk is a little app that will show to you each cpu core clock and gpu clock. Please hold the red button and put at most 100 at "Update Speed". Don't touch the other options because they're buggy!
    2.5.20-boeffla-config-v2.apk is the Boeffla Config App, where you can setup most of this kernel's options

    klte = SM-G900F, SM-G900M, SM-G900R4, SM-G900R7, SM-G900T, SM-G900V, SM-G900W8, SM-S902L
    klteduos = SM-G900FD, SM-G900MD
    kltedv = SM-G900I, SM-G900P
    kltekor = SM-G900K, SM-G900L, SM-G900S
    kltechn = SM-G9006V


    - possible fix for encrypted devices and f2fs file system (f2fs is buggy on every s5 kernel, don't use this)

    - more overclocking on cpu and gpu
    - sdfat updated
    - tuned hot plugger enhanced
    - xor and square root algorithms optimized for ARM
    - boot time maybe a little faster with LZ4 compression (that's why kernel seems bigger)
    - removed "read-ahead" code from kernel, don't bother changing read_ahead_kb because it won't work
    - zcache (not zswap/zram) back on for now

    - 266mhz undervoltable again.
    - f2fs removed for now
    - ext4 read_ahead blks reduced but not eliminated

    - tweaks to zcache. still don't know if it's better with it on or off..
    - tuned hotplugger will enable a core and put it on maximum freq right away!
    - removed CPUBW_HWMON gpu governor
    - tweaks to uv_oc table

    - compiling with march=armv7-a mtune=cortex-a15

    - linux 'fair' scheduler tuning
    - zcache disabled
    - more inlining while compiling

    - more tuning on linux cpu fair scheduler and tuned governor
    - revised all kernel configs (klte and variants)

    - smooth screen animations
    - new f2fs version
    - maple scheduler tuned
    - compiled with -funroll-loops but less function inlining

    - f2fs should be working now
    - new assembly optimizations

    - boeffla app should work better now when changing cpu hotpluggers and charging voltages
    - some governors are back
    - using "system_freezable_power_efficient_wq" for disk events
    - RoW and Maple schedulers tweaked
    - ext4 tweaks
    - fair scheduler tweaks

    - GCC 9.1 (2019 compiler and toolchains)
    - Compiling with -fgraphite -fgraphite-identity -fschedule-fusion -ftree-lrs
    - tuned hotplugger with different algorithm

    - number of online cores are now working on boeffla app
    - boeffla app can raise input charger amperage to 2200
    - minor gpu tweaks

    - Tuned governor and hotplugger tweaked
    - Saving more battery when suspended
    - Merging sd reads/writes by default

    - tuned governor tweaked
    - defaulting to row i/o scheduler, even though benchmarks don't like it :p
    - defaulting to "simple_ondemand" gpu governor, tweaked it a lot

    - back to xz compressed kernel image
    - updates from upstream los16
    - same kernel for los14 or 16. thanx Samuel Pascua
    - some strncpys changed to memcpys
    - tuned governor at 15ms frequency

    - updates from upstream los16
    - rewrote tuned hotplugger: using even less cpu for itself but enabling cores more often, starting from core 4 instead of 2
    - ZRAM enabled with lz4 compression but swappiness at 60% only
    - made 1497mhz the default high load speed
    - tuned governor at 10ms frequency

    - zram changed to vnswap but lower swappiness to save battery
    - no more flicker when low brightness (thanks to samuel pascua)
    - file system tweaks

    - f2fs code stolen from intelli-kernel
    - file system tweaks
    - default vm_swappiness to 25

    - GCC 9.2.1 MUSL 2019-12
    - boot time reduced even more
    - faster overall performance, lower overall battery drainage
    - KTmonitor should show CPU Temperature now
    - vnswap should work on Pie
    - enforcing selinux after booting
    - removed adreno input booster
    - set sysctl_vfs_cache_pressure to 50 and vm_swappiness to 40
    - ignoring zswap_max_pool_pages

    - Working on Q (Android 10)
    - AnyKernel update to 3
    - Tuned governor with min_sample_time defaulting to 80ms
    - Charging till your battery gives 4.4v, or explodes
    - UV/OV table matching scaling_frequencies

    - Using higher l2-cache frequencies for performance
    - Higher heat "tolerance"
    - Battery voltage/power should now be showing correctly at lockscreen
    - vnswap wasn't working on Pie but now it is

    - Changed some timers to let the device sleep more (huge battery gain on stand by)
    - Tuned governor now being more conservative
    - Added back IO Schedulers
    - Led control
    - LOS updates
    - Remove Adreno touch booster
    new version is up
    new version is up.. it works both in los14 or 15 or 16... :)