View Poll Results: What's your max stable CPU Freq by using ace2nutzer Kernel 20150320 or newer ??

800Mhz (Stock Samsung)
56 Vote(s)
38 Vote(s)
25 Vote(s)
21 Vote(s)
73 Vote(s)
18 Vote(s)
5 Vote(s)
0 Vote(s)
18 Vote(s)
unstable at all ;-(
10 Vote(s)

[KERNEL][for 4.4.4] A2N Kernel 20191114 [ROM] CM11 20190918 [STABLE][Power efficient]

3,926 posts
Thanks Meter: 4,318
By ace2nutzer, Recognized Developer on 27th October 2014, 10:19 PM
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A2N Kernel and Android 4.4.4 ROM (CM11) for the Galaxy Ace 2 from SAMSUNG

Supported Devices
  • GT-I8160
  • GT-I8160P
  • GT-I8160L

This Kernel and ROM aims are to
  • reduce the power consumption
  • improve the Performance
  • make it more smooth
  • reduce RAM usage
  • improve RAM Management
  • increase the Security
  • extend Device Features
  • and many more ....

A2N Kernel Special Features

### App & Kernel Features ###
# Power
--> Charger Control: Adjust AC / USB max Charging Current in 100 mA Steps, Range: 100 - 1500 mA
--> Shows the actual accepted Charging Current
--> Ability to stop and hold Charging at 80 %, helps to prolong the Battery Lifetime
--> BLN EOC i.e. Backlightnotification on End-Of-Charge - When Battery is fully charged it will enable the Softkey LEDs
--> Enables output Voltage to the USB-Port ... e.g. for charging other Batteries or to supply a fan
--> Shows Power Menu - useful if your Power Button is broken

# Audio
--> Gain Control for:
--> Headphones: up to +12 dB Total (analog + digital)
--> Earpiece: up to +8 dB
--> Microphone: up to +30 dB
--> LPA i.e. Low-Power-Audio on suspend - Undervolting up to -100 mV
--> Volume + / - over the App - useful if the Hardware Buttons are broken

# Screen
--> Sweep2Wake aka S2W - works even without forced wakelock
--> Turn the Screen OFF over the App - useful if the Power Button is broken

--> Overclock Control: 200 - 1300 MHz (Stock: 200 - 800 MHz)
--> Undervolting up to -200 mV
--> Adjust Up Threshold from the Governor - to adjust the Balance between Battery Life and Performance
--> Boost Control: if enabled, it will jump from min freq to max freq, improving responsiveness

--> Overclock Control:
--> Set min/max GPU Clock - Range 300 - 800 MHz (Stock: 400 MHz)
--> Undervolting up to -100 mV
--> Adjust Up Threshold from the Governor - to adjust the Balance between Battery Life and Performance
--> Boost Control: if enabled, it will jump from min freq to max freq, improving 3D Performance

# Hardcoded Performance Profiles
--> Powersave (Underclocked)
--> Balanced (Kernel default / Stock)
--> Performance (Overclocked)
--> Performance Plus (Overclocked)

--> zRam - creates a swap block-device in RAM in order to improve Multitasking and it will start to compress data if needed (25 %, 50 % or 75 % of the RAM Size)
--> KSM - Kernel Samepage Merging - saves RAM if it finds some duplicates of the memory pages in RAM and it will merge them to one page
--> Shows the amount of the shared RAM in MB
--> FSB/DDR Overclock - 200/800 MHz @ 250/1000 MHz for higher RAM I/O throughput

# Network
--> Enable Kernel Support for Network File Systems: CIFS and NFS
--> Allows to change the TCP Congestion Algorithm (cubic, new reno, bic, westwood+)

# Misc
--> Flashlight Brightness Control - up to 5 times brighter than with Stock Kernel !!
--> Backlight Notification aka BLN - be notified of new Messages over the SoftKey LEDs, configurable ON/OFF blink delays
--> Accelerometer Calibration
--> Disable the Android Logger aka logcat - saves Battery and prevents other Apps to read the System Log

# Debug (over the left SoftKey)
--> Disable Restore on Reboot - useful if you are not sure whether the settings are stable, especially if you set too high CPU Clock or too much Undervolting !

For more details, please check the Screenshots.

### END OF Kernel & App Features ###

For more details, please check the Screenshots.
Other Kernel & ROM specific features, improvements etc ...
  • Cyanogenmod 11 Features
  • CM11: Low Power Consumption
  • CM11: High Performance
  • Reduced RAM usage
  • 3 Peformance Profile
  • Many Optimizations
  • Real-Time Kernel / Quick response
  • CM Performance Profiles (3 Profiles)
  • CPU/GPU Overclocking - Thanks @cocafe
  • CPU Steps - Min 200 - Max 1300 MHz (Stock Min 200 - Max 800 MHz)
  • GPU Steps - Min 300 - Max 800 MHz (Stock 400 MHz)
  • SafetyNet Bypass (with "Advanced Root" disabled in the demo app)
  • Native BLN Support - Touch Soft-Keys LED's blinks for Notifications
  • Charger Tweaks: Fast Charging, up to 1500 mA for both USB and AC power source
  • Charger Optimizations to improve battery lifetime
  • CPU Governor: Conservative - fine tuned for max SOT (screen ON time) and performance
  • I/O Scheduler: Deadline
  • Lite Kernel - Removed unneeded / useless Kernel features
  • Ram overall improvements --> Multitasking and Gaming performance
  • Many Kernel Tweaks
  • 631 MB userspace RAM (stock was 624 MB)
  • zRam with fast LZ4 Compressor
  • Optimized LCD Drivers (WS2401 & S6D27A1) - Fixed bugs; lags and blackscreens
  • Optimized Audio Driver (louder + cleaner sound) ---> some more gain is configurable over the A2N Kernel Control APP
  • Binary-Code Optimizations - for smaller and faster code (only fail-safe)
  • Properly utilization of Precious Hardware features like: Vector Floating Point + SIMD (NEON) Instructions
  • Based on Stock Samsung and some commits from TeamCanjica (CPU/GPU OC/UV; Audio and Charger Driver)
  • PLLDDR OC Module (FSB OC) - thanks @ChronoMonochrome
  • UHID Support for BT Mouse etc.
  • SELinux in permissive mode
  • ART - experimental
  • And many more .. just check the A2N Kernel Control App for all supported Features


Step 0:

This Step is only needed if you need to update to Android 4.x.x as it's required for this ROM and Kernel.
If u've already Android Version 4.1.2 or even 4.4.x installed, then go to Step 1.

Update to the latest Samsung Stock ROM 4.1.2 with ODIN.
All the needed Files u'll find it in the FTP Server, Click!
Make sure your Battery is at least charged at 70% before u proceed.

I'm a noob, please show me more details:

Download needed Files for Windows (for other OS, please search the Web):

Samsung USB Driver for Mobile Phones and Offline flasher:

Stock ROM:

For the GT-I8160 you need: (3-parted)
and (Latest Stock ROM)

For the GT-I8160P you need:
CODE_GT-I8160P_I8160PXXLK2_CL1211774_REV00_user_SEC_KEY_XL ( first 3-parted)
CODE_GT-I8160P_I8160PXXME1_DBT_1106830_REV00_user_low_ship .zip (second 3-parted)
and (Latest Stock ROM)

For the GT-I8160L you need: (3-parted)
and (Latest Stock ROM)

After u've downloaded the needed Files and u've unpacked and installed the Samsung USB Driver, u can proceed wit the upgrade.
Note: All your data will be deleted, so it's recommended to backup some important files to your Computer, including the content of your sdcard.
First of all, export all your Contacts to your ext-sdcard. Later you will need this File in order to import your Contacts into the new ROM because the new ROM CM11 has a small issue that it can't read SIM-Contacts.
Now copy the exported contacts to your PC and then format the sdcard as FAT32 if u can, if u don't know how to do that, it's also (for now) enough to simply delete all files and folders from the sdcard.

Unpack and open the Program inside, it's: Odin3 v3.07.exe

Unpack the ROM, for example we unpack the ROM: for the GT-I8160 which is a 3-parted Stock ROM.

Well, now Power OFF the Phone and remove the sdcard.

Press and hold at the same time: Volume down + Home + Power Button.
The Phone will boot directly to "Download Mode", now press "Volume Up" to enter "Download Mode".
Connect the Phone with your PC with the original USB Cable (important: during flashing don't turn off your pc or phone, also don't touch the Phone or the USB Cable)
Your Phone should be recognized by ODIN .. u can see this in "ID:COM"
if not, then the USB Drivers for samsung mobiles are not properly installed !

Don't change the check boxes !!!

Now load the *.tar.md5 files as following into ODIN:

PDA = HOME OR CODE (*.tar.md5)
CSC = CSC (*.tar.md5)
PIT = *.pit File (the checkbox Re-Partition is now checked )

Wait until the MD5 Check is done and proceed by adding the next package in ODIN.
Before u press "Start", make sure everything looks like this:
For 3-parted Stock ROM:
For latest Stock ROM:

Finally press "Start" - Wait patiently ... this takes around 7 Minutes.

The Phone will reboot several times. When u see the pad for entering the SIM PIN ... then the (3-parted) ROM was flashed successful and u can now remove the USB Cable and reset ODIN and u should flash the next ROM with ODIN which is: (Latest Stock ROM)

flash it exactly like the 3-parted one, with the difference that it's only one File to add in ODIN .... see the Screenshot "For latest Stock ROM" which is odin.png.

In General the order should be exactly like it's already listed here above !
That means:

1. flash "first 3-parted" and wait till it's fully booted up ...
2. flash "second 3-parted" (GT-I8160P only) and wait till it's fully booted up ...
3. flash "latest Stock ROM" and wait till it's fully booted up ...

Step 1:

Download needed Files and copy them to your micro sdcard, DO NOT unpack them!:


Kernel for the three Models, sdcard_only is recommended (for optimal functionality, note: micro-sd is required) OR normal version if u want to use the phone with internal + micro sdcard or simply without micro sdcard:
Click! sdcard_only version) OR (for normal kernel version):

gapps are required for Google Play:
Choose ARM - 4.4 - pico
OR if it doesn't work well, then use this tested package from FTP Server:

Explicit for GT-I8160P, download

Explicit for GT-I8160L, download

Step 2:

Power OFF Your Ace 2
boot to recovery:
Press and hold at the same time Home + Volume UP + power button till it'll vibrate.
Navigate with Volume Keys to "apply update from external storage" and confirm always with "Power-Key"
Choose "" and confirm.
"install zip from sdcard" and confirm.
"choose zip from sdcard" and confirm.
Choose " OR" and confirm
Hit "Back Key" few Times and select "reboot system now"
When then Screen is black immediately boot directly to recovery again.
Now the cwm version should be

Step 3:

Increase the available space for Apps from 1,2GB up to 3GB !
More Informations about the Repartition: Post #3

This Step is optional, so if you don't plan to install a lot of apps you can skip this and go to Step 4.

flash OR
press several times the soft back-key, then press "advanced" and "power off"
boot again to recovery
mounts and storage
format /system
format /storage/sdcard0 as "vfat" [it's like FAT 32]
Go back and "wipe data/factory reset"
power off
Boot to cwm

Step 4:

If you skipped Step 3 then:

mounts and storage
format /system
format /storage/sdcard0 as "vfat" [it's like FAT 32]
Go back and "wipe data/factory reset"
power off
boot to recovery


flash CM11 ( already included)

in addition for GT-I8160P (for the NFC Model):

in addition for GT-I8160L (for the Latin Version):

Flash latest Kernel:

Flash gapps

Finally flash

Reboot system now

If it asks for root, just say NO (it's cwm bug)



I'm not responsible if you brick your phone by using this Kernel, voiding your warranty, or any other pain or suffering you may feel as a result of using this kernel!! - You do it all at your own Risk !!

Support my Projects ...
by using my Amazon Partner Link:
Donate to me via PayPal


@dh.harald and @hafidzduddin for contribution on codina sources
@ Team Canjica for a base for this perfect Kernel
@ All users whose have tested this Kernel and direct the development along the right path
@ All those users, who I forgot to mention (PM me if so)
CyanogenMod Team for CM11 & CWM Recovery
SAMSUNG for opening Kernel source
ST-Ericsson for codina patches
Google for Android (Kernel) patches
Linux upstream for the root kernel base
Linus Torvalds the creator of Linux kernel
Thanks @S.AMU for providing FTP-Server

ace2nutzer, cocafe, zwliew, mkaluza, Rox, Meticulus, ChronoMonochrome, TeamCanjica, SAMSUNG, ST-Ericsson, Google, Linux upstream.

Kernel Special Features: High Efficiency; Powersaving; High Performance; OC/UC/OV/UV; Lite Kernel; Pre-configured; ready-to-use; cwm recovery built-in.

Version Information
Status: Stable

Source Code: Samsung_codina_Kernel/tree/4.4.4_cm11

Created 2014-10-27
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The Following 116 Users Say Thank You to ace2nutzer For This Useful Post: [ View ]
27th October 2014, 10:19 PM |#2  
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Post Bugs / Changelog
Bugs and Issues Kernel 20200513:

Bugs and Issues CM11 ROM 20200328:
  • screen cast - but some app may work
  • Reading sim contacts - but u can import contacts from sdcard
  • Stock Browser is outdated - please use Chrome web Browser


Kernel 20200513:
  • RAM: optimized memory management
  • zRam: improved stability
  • init.d Fix
  • Updated Demo App installation

A2N Kernel Control V7.4
  • init.d Fix

CM11 ROM 20200328:
  • Updated build.prop - improved dalvik heap
  • incl. A2N Kernel 20200403 - normal version

Older Changelogs:

Kernel 20200509:
  • RAM: optimzed memory management
  • Enabled CRYPTO_SHA256 && CRYPTO_SHA512
  • init.d Fix
Kernel 20200427:
  • RAM: optimzed memory management - especially multitasking
  • ABB-Charger: driver update
  • Binary Code Optimizations

A2N Kernel Control V7.3
  • CPU/GPU: increased max up_threshold 99 -> 100 %
  • Updated defaults
  • Bug Fix

A2N Kernel Control V7.2
  • Requests root permission on App startup
Kernel 20200403:
  • Updated Kernel Config
  • PLLDDR OC: driver update
  • LCD: driver update
  • NET: enabled congestion protocols: cubic, new reno, bic, westwood+
  • SWAP: optimized zRam
  • BOOT: improved boottime - boots with 1 GHz
  • GPU: added a real dynamic governor for more powersavings
  • CPU: conservative gov update
  • CPU/GPU: added a "boost" tunable in order to switch from min to max freq immediately
  • RAM: optimzed memory management - especially multitasking
  • ABB-Charger: driver update

A2N Kernel Control V7.1
  • GPU: allows to UV all steps
  • Profiles: added Performance Plus Profile
  • Network: added TCP Congestion Control
  • CPU/GPU: added Boost Control - in order to switch from min to max freq immediately
  • Updated defaults
  • Fixed back-arrow
  • Bug fixes
  • License Check: added Retry Button
Kernel 20191114:
  • Optimized memory management
  • CPU/GPU/SXA: optimized Governors
  • Set vm_swappiness to 200 (patched)
  • Updated kernel config
  • FSB/DDR_OC: updated for lower power consumption and stability
  • Charger: Set AC Current to 800 mA by default
  • MCDE: LCDs: updated for quick wakeup + stability
  • Improved performance, responsiveness, and battery life
  • More smoothly

A2N Kernel Control V7.0
  • Updated defaults and strings
  • Minor Fixes

CM11 ROM 20190918:
  • Updated build.prop - improved dalvik heap
  • incl. A2N Kernel 20190918 - normal version
Kernel 20191017:
  • VM: patched swappiness to be tuned up to 200 - (kernel default)
  • USB OTG Power: allowed output power 300 @ 500 mA
  • LCD's: increased stability against potential black-screen issues
  • LCD's: decreased wakeup latency from suspend
  • CPUFREQ: updated logic - auto set lower cpu_min_freq for suspend
  • updated ramdisk

A2N Kernel Control V6.9
  • Misc: removed swappiness control (it's set @ 200 by default)
  • USB OTG Power: allowed output power 300 @ 500 mA
  • Minor Fixes
Kernel 20190918:
  • CPU/GPU: updated governors
  • Charger: tiny update
  • Sweep2Wake: Fixed Touchscreen not waking up on incoming notification or call (if Sweep2Wake was enabled)
  • Mali-GPU-400: Fixed memory allocation failures - alloc_order 6 --> 0 / block_size 256 KB --> 4 KB
  • Re-added zRam Support with fast LZ4 Compressor
  • Set GPU/SXA governor up_threshold to 95 % for better powersavings
  • CPU: added a better control for managing CPU suspend_freqs - (for more info check the kernel release notes in the thread)
  • Bug Fixes
  • Source cleanup

A2N Kernel Control V6.8
  • Misc: added zRam switch and
  • swappiness control
  • Full overhaul and
  • Bug Fixes
Kernel 20190817:
  • Reverted back overclocked wifi module from 100 to 50 MHz - Caused system to freeze
  • CPU/GPU/SXA: updated governors to be more clean and smooth
  • Sweep2Wake: updated driver, added the ability to use it now even without extra wakelock
  • CPU: re-added the ability to set min_freq for screen ON regardless the used min_freq for Suspend (which is by default 200 MHz)
  • MCDE: added LCD workaround tunable to workaround wakeup issue on some broken LCD's. (it's useful if u've to press power button 3 times to wakeup the phone from suspend or deep sleep)
  • Source code cleanup - Fixed all leftover compiler warnings

A2N Kernel Control V6.7
  • Power --> Charger Control AC/USB: allowed up to 1500 mA input Current
  • Screen --> Added ability to use Sweep2Wake even without extra wakelock
  • CPU: added ability to set min_freq up to 200 MHz for Screen ON
  • CPU/GPU: added ability to tune the governor for more performance or more powersaving (very easy to use)

CM11 ROM 20190202 RELOADED:
  • Updated build.prop
  • incl. A2N Kernel 20190718 - normal version
  • AUTO wipe dalvik-cache
Kernel 20190718:
  • CPU/GPU/SXA: updated all 3 Governors - should improve performance and smooth scrolling
  • KSM: reduced pages_to_scan for the first 2 scans - reduces some overhead on boot

A2N Kernel Control V6.6
  • Power: fixed restoring of charging current on boot

Kernel 20190619:
  • GPU: fixed a bug in dynamic_down_threshold logic
  • MCDE --> LCD's: updated drivers, improved stability especially for S6D Model (should fix the blurred screen issue)
  • fixed lags caused by MCDE/LCD
  • CPU --> conservative_gov: updated up and down thresholds to reduce lags caused by the governor itself
  • Installer: fixed issues with /ramdisk partition that caused Offline-charging (LPM) and FSB/DDR (PLLDDR) OC not to work properly
  • Reduced feedback latency
  • More smooth

A2N Kernel Control V6.5
  • Audio --> Headphones: added digital gain control
  • Screen: removed LCD Freq Control (redundant)
  • CPU: removed suspend_max_freq limit (redundant)
Kernel 20190521:
  • I/O: switched to CFQ Scheduler
  • cpufreq_conservative: updated to fix some micro laggs
  • PLLDDR_OC: fixed audio issues - re-added recal. of SXA Clocks

Kernel 20190503:
  • MCDE: LCD's: improved stability
  • LCD S6D27A1: fixed Offline-charging Battery animation

Kernel 20190427:
  • LCD WS2401: fixed wakeup issue when using PLLDDR OC
  • PLLDDR OC Module: update
  • CPU: conservative gov - update

A2N Kernel Control V6.4
  • Screen: fixed restoring of ape opp 100 on boot
  • Screen: LCD WS2401: use 50 MHz by default
Kernel 20190418:
  • GPU: Driver update - added dynamic_down_threshold for better power efficiency
  • CPU: gov conservative: added dynamic_down_threshold for better power efficiency
  • LCD WS2401: updated screen on/off delays - fix for LPM
  • LCD: fix user LCD Freq on late_resume
  • LCD: Driver update - improved stability, more smooth
  • LCD: added flicker-free support - by using highest LCD Freq + APE 100 requirement (to work stable)
  • FSB/DDR: updated Driver to work fine with 250/1000 MHz
  • I/O: Removed swap && zRam support - now we use KSM instead
  • BLN: Bug fix
  • Charger: changing charger current is now (again) possible "on-the-fly" (without to unplug the cable)
  • Rear Flash LED: updated Torch Brightness Control

A2N Kernel Control V6.3
  • Power: updated Charger Control
  • Screen: updated LCD Freq Control
  • Misc: removed zRam (now we use KSM instead)
  • Misc: KSM: added "pages to scan" choice
  • Msc: updated FSB/DDR OC Control
  • Misc: updated Torch Brightness Control
  • Minor bug fixes and improvements
Kernel 20190324:
  • MCDE: WS2401 Updated Delays - Fix for LPM
  • Kernel Config: tiny update
  • Updated Ramdisk and user Ramdisk
  • Moved LPM charger binary & /res/images/charger to user /ramdisk - allows to use custom charger binary and/or custom /res/images/charger

Kernel 20190319:
  • Fixed "move apps to sdcard"
  • Enabled KSM Support - optimized for Android
  • Enabled UHID Support
  • Switched to Conservative cpu governor - higher powersaving
  • Updated Mali GPU Driver
  • Mali: updated gpu freq table for higher efficiency - removed too low steps
  • CPU: use 200 MHz Step only on Suspend
  • LCD: Reworked lcd type detection and split interface for each of lcd type
  • LCD: Recalibrated video.modes and LCD Freq - more smooth
  • LCD: fixed custom_lcdclk interface
  • Use: OPP 25% only on suspend
  • CPU: Conservative gov fine tuning
  • Optimized binary code optimizations - -O2 globally
  • Updated PLLDDR OC Module - improved stability
  • Reworked the whole VAPESEL2 & LPA(low-power-audio) Voltage Logic
  • Updated suspend_max_freq interface
  • Use the full Freq of 100 MHz instead the Half of 50 MHz for sdi1 as well - WLAN
  • BT: fixed file transfer issue
  • Disabled CRYP Engine - caused shutdown issue
  • Fixed Virtual memory layout
  • Disabled APEAT & APETRACE Clocks for Lauterbach Debugging - For powersaving
  • MCDE: re-enabled MCDE_DPI_UDERFLOW Patch
  • Updated Ramdisk and scripts

A2N Kernel Control V6.1
  • Screen: Fixed LCD detection

A2N Kernel Control V6.0
  • Misc: added KSM Control
  • CPU/GPU: updated Freq's according to the latest A2N Kernel
  • Audio: added LPA Undervolting - Low-Power-Audio on Suspend
  • Debug: removed LCD Type Detection - moved to "Screen"
  • Screen: added LCD Freq Control
  • Power: added 90% Charge - stop and hold charging at 90%
  • CPU: Suspend_max_freq: removed 200 MHz Choice - 200 MHz is the default min_freq on suspend
Kernel 20190206:
  • Reverted "MCDE: WS2401: stock delays" - caused LPM issue
  • Charger: reduced time for 99% -> 100%
  • Updated ramdisk - use kernel default min_free_kbytes

Kernel 20190202:
  • Reworked the whole kernel config
  • removed kmsg spam raw_soc from abb_fg
  • Android Kernel 3.0.31 -> 3.0.72
  • Improved Security
  • Minor bug fixes
  • Kernel Sched: enabled HRTICK
  • Mali 400 GPU: optimized driver
  • MCDE: WS2401: stock delays
  • Improved Memory management - Multitasking
  • Fixed memory allocation failures
  • Higher efficiency - Battery, Performance
  • Improved stability - No FC, no reboots
  • and some more tiny kernel optimizations

A2N Kernel Control [GT-I8160] V5.9
  • Moved "storage" and "debugging" to the demo version
Kernel 20181218:
  • FS: Revert to stock iocharset
  • Disabled Memory Resource Controller
  • Multitasking is now much better
  • Added Assistive Light Control for the LED Torch - Full Range from 1 - 16 !

A2N Kernel Control [GT-I8160] V5.7
  • Misc: moved "advanced root" to the demo version
  • Updated App permissions
  • Misc: Added Assistive Light Control - Torch LED power Control

CM11 ROM 20181023:
  • Optimized Dalvik heaps
  • incl. A2N Kernel 20181023 - normal version
  • AUTO wipe cache and dalvik-cache
Kernel 20181202:
  • Charger: tiny fixes, reduced lowbat_wake_lock time

A2N Kernel Control [GT-I8160] V5.4
  • Power: updated Charger Control, reduced max charge Current to 1 A.

Kernel 20181117:
  • Charger: updated charger logic - set ac current max @ 700 mA by default,
    - improved security aka SIOP, - driver cleanup

A2N Kernel Control [GT-I8160] V5.3
  • Power: updated Charger Control
Kernel 20181105:
  • Charger: updated the whole Driver. - Relaxed a lot of limits to be able to charge up to 1500 mA Current for any Chargers AC/USB. - Added better support for 3.7 V (optimized for 1700 mA) 3rd-party batteries. - Better Support for very old Batteries from 2012 - 2013. - Refresh and recover some lost Battery power and update the Battery Gauge to Stock. - Driver Clean up .. removed useless sysfs interfaces and added new interface for checking actual real current drawn from the power source.
    - fixed also occasionally wakelock issues after unplugging charger cable (battery drain fix).
  • USB Gadgets power: set in kernel proper max drawn current to 300 mA
  • Charger: enable BLN on eoc_real instead of eoc_first if suspended (if enabled in the App or over init.d script)
  • MCDE / LCD: tiny stability fix for s6d27a1

A2N Kernel Control [GT-I8160] V5.2
  • Power: Added Check (real) input Current Button
  • Layout update
Kernel 20181023:
  • Charger: set ac_chg_current to stock

A2N Kernel Control [GT-I8160] V5.1
  • Power: Adjusted AC Current to Stock
  • Layout update
Kernel 20181012:
  • LiveOPP: 400Mhz Step: ape/ddr 25% @ 50% - this is
    useful for "Suspend Max Freq"
  • RAM: optimized memory management
  • Higher Performance, Better Battery lifetime and more smooth

A2N Kernel Control [GT-I8160] V5.0
  • Audio: added Volume Control
  • Screen: added go to suspend button
  • Layout update
  • Fixed some minor bugs

CM11 ROM 20180901:
  • Optimized Dalvik
  • build.prop tweaks
  • Fast boot
  • added ART Flags*
  • incl. A2N Kernel 20180901 - normal version
  • AUTO wipe cache and dalvik-cache
Kernel 20181006:
  • MCDE: both LCD Drivers set in fail-safe mode for now - chuck norris mode
  • NET: xt_qtaguid updated to 3.0.72
  • Updated kernel config to 3.10 (specific for Android 4.4.4)
  • defconfig: enabled memory resource controller - saves up to 30MB/app
  • MALI: updated memory management - use 4kb block size
  • LIB: updated LZ4 Compressor Module to 4.4
  • BOOT: switched from LZO to LZ4 for faster booting (re-implemented)
  • RAM: updated memory management
  • Overall improvements - performance, battery and stability!

A2N Kernel Control [GT-I8160] V4.9
  • misc: added swappiness control
  • misc/zram: removed reboot workaround for Android 4.1.2 - fixed in kernel
Kernel 20180922:
  • Updated the following kernel drivers to 3.0.72:
  • drivers/gpu/ion
  • mm (basic memory management)
  • arch/arm/vfp (vector floating point and processor instructions)
  • drivers/hid/uhid
  • fs/fat
  • fs/ext4
  • block
  • drivers/block
  • drivers/staging/android: lowmemorykiller & binder
  • -
  • Added the following new drivers as needed by Android:
  • SYNC (Hardware mode)
  • SW_SYNC (actually disabled, because we're testing hardware-sync instead software-sync)
  • -
  • Optimized memory management
  • Updated adj & minfree values
  • Set Swappiness=0 by default
  • Mali: optimized memory management
  • Removed some obsoleted drivers
  • Source cleanup
Kernel 20180901:
  • Fixed Apps crash
  • MCDE: WS2401: improved stability
  • cpufreq: updated suspend_max_freq interface
  • Mali: driver update & fixed memory allocation failures
  • Tiny Kernel update & tweaks

A2N Kernel Control [GT-I8160] V4.8
  • reduced overhead on boot

A2N Kernel Control [GT-I8160] V4.7
  • GPU: removed mali_pre_allocated_mem_size_max - it's now 32MB by default
  • Screen: removed "Tuned Freq" & "Chuck Norris mode" - rebasing driver ....
  • Misc: added "Advanced Root" for CM11
  • Tiny Bug fixes
CM11 ROM 20180809:
  • Fixed SafetyNet - Passed
  • SafetyNet will PASS even with root enabled like it's done on "Magisk"
  • Reworked the whole SuperUser implementation
  • Play Store: Phone is now "Certified"
  • incl. A2N Kernel 20180809 - normal version
  • AUTO wipe cache and dalvik-cache

Kernel 20180809:
  • block/deadline-iosched: reset to AK3.0.72 and patched
  • Reworked all APE/DDR OPP requirements
  • PLLDDR OC Module: tiny updates - should fix boot animation failures when using it
  • Mali 400 GPU: reduced Voltages
  • Reduced also Voltage for LowPowerAudio
  • Cleaned Source
  • Updated EOC BLN
  • Updated BLN
  • Removed "sva" kernel wakelock - battery drain fix on suspend!
  • cpufreq: added suspend_max_freq interface
  • Use APE/DDR 25% OPP even for screen ON on idle
  • Reduced LCD Freq*
  • Fixed most of the compiler warnings for cleaner code
  • Updated Ramdisk in order to hide su binary - SafetyNet Fix
* = "Tuned Freq" disabled means stock lcd freq and will work stable,
but with enabled "Tuned Freq" it can cause some screen glitches caused by 25% OPP,
on the other hand, lower lcd freq and lower OPP states will save a lot of battery power.

A2N Kernel Control [GT-I8160] V4.6
  • misc: fix zram on 4.1.2 stock

A2N Kernel Control [GT-I8160] V4.5
  • CPU: add suspend_max_freq control

A2N Kernel Control [GT-I8160] V4.4
  • Fixed Support for GT-I8160L
  • Storage: Fixed compatibility
  • Misc/PLLDDR OC: fix restore on boot
  • source update

A2N Kernel Control [GT-I8160] V4.3
  • Updated API to 28
Kernel 20180711:
  • swap: improved zram
  • cpu: interactive governor sync to AK 3.4.67
  • i/o: deadline scheduler sync to AK 3.4.67
  • Fixed Kernel Headers
  • binder, lmk: sync to AK 3.4.67
  • mcde: updated lcd driver
  • disabled some tracing
  • updated ramdisk

A2N Kernel Control [GT-I8160] V4.2
  • Screen: updated lcd freq stuff
  • use it ONLY with latest A2N Kernel

A2N Kernel Control [GT-I8160] V4.1
  • Misc: added reboot dialog for pllddr oc
  • use it ONLY with latest A2N Kernel

CM11 ROM 20180601:
  • Updated Dalvik Heaps
  • disabled "persist.sys.dalvik.multithread" - due of some race condition
  • incl. A2N Kernel 20180601 - normal version
  • AUTO wipe cache and dalvik-cache
Kernel 20180615:
  • Updated "interactive" cpu governor
  • Mali-400 GPU: set down_threshold to 20%
  • CPU: set cpufreq_opp_delay to "0"
  • Higher efficiency

A2N Kernel Control [GT-I8160] V4.0
  • CPU: added 400Mhz Step
  • use it ONLY with latest A2N Kernel
Kernel 20180612:
  • Updated interactive gov
  • Higher efficiency
  • Real-Time Kernel
  • CPU: added 400Mhz step
  • updated /perf.profiles.rc
  • Updated ramdisk
Kernel 20180601:
  • updated CPU/GPU Driver
  • cpu: added 600Mhz step
  • removed old workaround for powersave profile with 500Mhz
  • gpu: removed 250Mhz Step
  • updated interactive gov
  • updated /perf.profiles.rc
  • less battery draining - because of decreased cpu voltages and 600Mhz step
  • higher efficiency
  • Updated ramdisk
A2N Kernel Control [GT-I8160] V3.8
  • Updated CPU/GPU/Profile stuff according to the latest A2N Kernel
  • Both CPU/GPU Undervolting control are allowed up to -200mV
  • swap/zram: use 1/2 of available RAM
  • use it ONLY with latest A2N Kernel
A2N Kernel Control [GT-I8160] V3.7
  • removed SELinux control - since google don't want this
Kernel 20180525:
  • updated android kernel config up to AK 3.10 - for the needed kitkat specific kernel options
  • full ipv4 / ipv6 support
  • enabled SELinux support in permissive mode
  • BLN: adjusted delays
  • switched to interactive gov
  • interactive gov: sync to Android kernel 3.0.72
  • interactive gov: disabled tracing
  • interactive gov: adjusted tunables for max performance and battery duty
  • mali: pre_allocated_ram set by 16MB by default
  • RAM: re-added extra_free_kbytes tunable - improves real-time workloads
  • more smooth and responsive
  • Updated ramdisk

CM11 ROM 20180524:
  • Enabled SELinux
  • Updated Dalvik Config (heaps) - once again
  • Lesser ram usage, more smooth and more stable
  • Fixed ramdom Apps FC by 99.99%
  • Updated NovaLauncher and BetterBatteryStats to the latest Version
  • removed OG-YouTube App - R.I.P.
  • incl. A2N Kernel 20180525 - normal version
  • AUTO wipe cache and dalvik-cache

A2N Kernel Control [GT-I8160] V3.6
  • removed mobile data comp (enabled by default in kernel now)
  • re-added SELinux control
  • storage: add swap storages switch (available for normal kernel version)
  • adjusted some defaults
Kernel 20180511:
  • RAM Management: Reverted Minfree Values to CM11 default
  • Final #3

CM11 ROM 20180324 reloaded:
  • Updated Dalvik Config (heaps)
  • Lesser ram usage
  • incl. A2N Kernel 20180328 - normal version
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.5
  • AUTO wipes, except wipe data and format /system

A2N Kernel Control [GT-I8160] V3.5
  • CPU: increased UV from -100mV to -150mV
  • Bug Fix
Kernel 20180508:
  • Some Kernel tweaks - updated rcu config
  • RAM Management: Merged Minfree Values from S. G. S8 Oreo Kernel
  • Increased Stability
  • Higher Performance
  • Better Battery Lifetime
  • Final #2
Kernel 20180405:
  • Sweep2Wake: fixed on LPM
  • Updated /ramdisk
  • Some Kernel tweaks
  • Final build
Kernel 20180328:
  • Sweep2Wake: removed auto-enable if charger is present - was unstable
  • Fixed permissions on /ramdisk
A2N Kernel Control [GT-I8160] V3.4
  • Re-added USB Power - ability to connected some gadgets to your phone (no otg)
Kernel 20180324:
  • Fixed USB Driver
  • Updated kernel config
Kernel 20180307:
  • Wifi: [re-added] reduced wakelock time of RX packet by half - thanks @ zwliew
  • Revert: "disable sia & sva wakelock" - caused reboot
  • [re-added] Fix "Dirty Cow" vulnerability - thanks @ Linus
CM11 ROM 20180128:
  • Fixed PC USB Connection on a clean installation
  • Updated Dalvik Config (heaps)
  • Lesser ram usage
  • incl. A2N Kernel 20180128 - normal version
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.2
  • AUTO wipes, except wipe data and format /system
Kernel 20180303:
  • Re-added USB Power Interface (output voltage to the usb port)
  • Reduced kernel size a bit
  • Disabled all the usb host & otg stuff (lack of proper driver)
  • Disabled tv-out feature (not supported)
  • Changed and updated Native Language Support to European Languages inlc. € (it's for properly showing file names)
  • Increased/Updated lpa/vape2 voltage - should fix wake up issues and improve Sound Quality (louder + cleaner)
  • Removed tunable "extra_free_kbytes" once again - it doesn't make things better
  • Re-enabled compaction-retry - forced compaction on high memory pressure to avoid oom
  • Updated ramdisk
Kernel 20180222:
  • Abb-charger: tiny update
  • MCDE: Reverted previous update
  • Swap: re-added "backport zram code from LK 3.10.103" (zsmalloc - lz4)
  • Memory Management: re-added extra_free_kbytes tunable for more free RAM
  • HID: re-added UHID Support from LK 3.4.67
  • Disabled SIA & SVA Wakelock - Battery drain Fix!
  • Small Kernel updates and stability fixes

A2N Kernel Control [GT-I8160] V3.3
  • Updated zRam Info Text - LZO @ LZ4

A2N Kernel Control [GT-I8160] V3.2
  • Added new Button "Mobile Data Compression"
  • Adjusted CPU/GPU Voltages for higher Stability + better undervolting
  • Removed "usb-vbus power" Button
  • Bug Fixes
  • Stability Fix
Kernel 20180128:
  • Source Code clean up - some left overs
  • Adjusted CPU Voltage show
  • GPU OC Stability Fix
  • Removed USB-Vbus power - driver clean up for OTG Support
  • Updated Touch Driver - stability fix
  • Reworked the full kernel config from scratch
  • Reduced Code Size
  • Optimized zRam
  • Enabled missing VPN - "TUN" Module (built-in)
  • Cpuidle driver - reverted some changes
  • Updated Memory Management
  • Updated Charger and Battery Driver
  • MCDE: Updated Delays for S6D27A1 - faster
  • Reduced black screens for S6D... on cwm + LPM
  • Added ability to change the LPM Battery animation (/ramdisk/charger/*)
  • Enabled TV-OUT Support - untested!
  • Updated ramdisk and various scripts
  • And many more tweaks
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.2
Kernel 20171230:
  • Fixed Wifi Tether
  • Optimized Wifi Driver / disabled debugging
  • Compiled VPN L2TP Support Built-in
  • Reverted the high level memory management to stock CM11
  • Switched to deadline I/O Scheduler
  • Updated Kernel Config
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.1

A2N Kernel Control [GT-I8160] V3.1
  • GPU: added ability to adjust mali-pre-allocated-memory-size

CM11 ROM 20171230:
  • Removed "soft reboot" - (breaks wifi)
  • Removed some more debugging - (-DDEBUG)
  • Re-added OGYouTube6.apk
  • incl. A2N Kernel 20171230 - normal version
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.1
  • AUTO wipes, except factory reset
CM11 ROM 20171213:
  • Re-added "Soft Reboot"
  • Disabled SELinux
  • Re-compiled with higher optimizations level
  • Higher Performance
  • incl. A2N Kernel 20171216 - normal version
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.1
  • AUTO wipes, except factory reset
Kernel 20171216:
  • LK3.0.101 -> LK3.0.31
  • Cleaned almost the whole Kernel Source
  • More closely to Stock Source
  • OTG Ready
  • Ready for LK3.4 upgrade
  • Removed LZ4 implementation (for now)
  • Removed ExFat Driver
  • Improved Performance && Stability
  • Reduced power consumption
  • More Smooth
  • Some Kernel Tweaks
  • Re-configured memory management - minfree, adj values and basic memory management
  • Logger: reduced buffer
  • Sweep2Wake optimizations - stability fix
  • Mali: disabled debugging and added some optimizations
  • Compiled with higher set of optimizations
  • Fixed Wifi when using "soft reboot" or when a soft reboot happened after an crash (performed by kernel itself)
  • Mali: fixed memory allocations failures (accidentally had reverted this fix lol)
  • Added partially DRM Support
  • Fixed B2R2 Driver (as well accidentally reverted during cleaning sources XD)
  • Mali: pre-allocated-memory-max: 16 @ 0MB for faster system when not playing games
  • kmsg: reduced some spamming from the charger
  • cpuidle: reset to stock
  • Fixed BLN blink and updated blink_on/off_delays - for lowest power consumption
  • Fixed BT-Audio on Suspend (untested)
  • Fixed ramdom FC Apps
  • Fixed USB bugs from previous unstable release
  • Fixed App installation from previous build
  • Reduced Wakelocks - deep sleep works properly now
  • Disabled SELinux - serves nothing
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.1
Kernel 20171110:
  • MCDE: added fail-safe config for WS2401 for Recovery & LPM
  • Added latest STE Codina Patch
  • Audio: enabled config SND_SOC_UX500_AB8500_MID_WIDGET - Thanks to the STE Patch
  • Enabled config UX500_SUSPEND_DBG_WAKE_ON_UART - should fix BT Audio on Suspend
  • zRam: Sources Sync 3.10.0 --> 3.10.103
  • Sweep2Wake: enabled by default if it's charging - both AC/USB (also on LPM)
  • Improved Performance & Battery Life Time
  • Compiled with Linaro 4.9.4
  • Inkl. A2N Kernel Control [GT-I8160] Demo V3.0
Cut ... It doesn't fit here ... too long ...
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27th October 2014, 10:19 PM |#3  
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Info 2 Useful Tips
Activate Developer Options

Go to Settings ---> "about phone" and tap several times to "build number"

3-Way Reboot Menu

Go to Settings ----> developer options and enable: "advanced reboot menu"

Faster Animations

in developer options set all 3 Animator times from 1.0x to 0.5x

CM Performance Profiles

This ROM and Kernel has 3 Performance Profiles:

CPU: min 200 max 600 MHz
GPU: min 300 max 300 MHz

Balanced (default):
CPU: min 200 max 800 MHz
GPU: min 300 max 400 MHz

CPU: min 200 max 1000 MHz
GPU: min 300 max 500 MHz

On Suspend CPU min_freq is always 200 MHz, no matter which min_freq is used while the Screen is ON.

How To make SpiritFMFree working:

Open SpiritFMFree App, go to Setting ----> Audio ----> Method ----> "Galaxy S3/Note/S2_ICS"

Tips for max SOT (screen on time)
  • Use "Performance" Profile
  • Never ever use higher CPU min_freq as 200 MHz
  • Keep the default Values for Governor tuning in the App (to keep it smooth and efficient)... or tune them slightly higher in order to save more power (but will harm the smoothness of your Phone)
  • Enable FSB/DDR OC for higher RAM throughput
  • Make sure to use only 3G mobile network mode
  • Use always the lowest possible LCD Brightness
  • Try some undervolting in A2N Kernel Control App
  • Disable all features you don't need
  • Uninstall Apps you don't need at all
  • Eventually replace the Battery with a new one or replace it with higher capacity

Changes after the Repartition
  • The total space from sdcard0 will moved to /data - so that's why a real sdcard is mandatory here.
  • /data is 3GB for apps - max. possible!
  • No problems with Apps installations
  • No wasted space !
  • sdcard0 will be added with 1GB Size... and u're able to use also micro-sdcard (sdcard1)
  • /data is 2GB for apps.
  • No wasted space !

For Reference purposes, the original partition layout has following setup:
  • sdcard0 is 1,1GB
  • /data is 1,2GB for apps
  • Some wasted space and too low free space for installing Apps.

How to disable EOC(end-of-charge) BLN(backlight notification) for LPM(offline-charging) + Recovery

Open "FileManager" ---> Settings ---> "General settings" ---> access mode --> "root access mode"
go back and navigate to the root "/" open the file user_lpm.rc and uncomment the corresponding line.


on boot

# Disable end of charge BLN
#   write /sys/kernel/abb-chargalg/eoc_bln 0

# LCD Brightness (default 100 - max 255)
#     write /sys/class/backlight/panel/brightness 50

# Disable Sweep2Wake
#	write /sys/module/sweep2wake/parameters/enable 0
on boot

# Disable end of charge BLN
   write /sys/kernel/abb-chargalg/eoc_bln 0

# LCD Brightness (default 100 - max 255)
#     write /sys/class/backlight/panel/brightness 50

# Disable Sweep2Wake
#	write /sys/module/sweep2wake/parameters/enable 0
Now EOC is disabled for offline-charging.
The same procedure is for "user_recovery.rc" if want to disable it as well in recovery mode.
Also there u can do other things, like enable/disable sweep2wake or change the lcd brightness for LPM or recovery.


First of all:
make sure u're running the latest Version of ROM, Kernel, and Kernel Control APP Provided by this Thread.
Bofore u want to report bugs or post some logs, u should make sure that u're NOT using any CPU/GPU OC/UC/OV/UV at all.
Also revert first all ROM changes made by i.e. XPosed, AutoRunManager, task killer, Disabled Services, Greenify and so on ... then u can proceed:

Open "A2N Kernel Control Demo" App and press the left soft-key menu button and select "debug"
there u'll be able to export logs to your sdcard and then u can post them here in the Thread to get some help or help with debugging.

Thanks for your interest in this Kernel !
Please rate this Thread and my App in Play Store and leave a nice comment. - Thank you!.
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27th October 2014, 10:24 PM |#4  
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Any download links for kernel?
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27th October 2014, 10:31 PM |#5  
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Nice to have another kernel. Is it really stable yet?
28th October 2014, 01:30 AM |#6  
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where is build 27.10? I cant find it, only build p1 for now.
28th October 2014, 01:42 AM |#7  
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I'm actually writing in the Thread.. sorry..... Downoad link added.
20141028 Version, shall be the first very stable Kernel Version.. because of CPU / GPU Stock Voltages and freq.
10/27 never exists.. and 10/28 I'll upload it in 1 Hour....
Please be patient.. let me finish writing the Changelog..
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28th October 2014, 09:58 AM |#8  
Thanks Meter: 5
Hi @ace2nutzer!
First of all, thank you very much for your work!!
Can you explain how to install kernel and ROM?? (i've never flashed a kernel... i have no idea...)
28th October 2014, 10:13 AM |#9  
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The Procedure is the same like Rox's CM11 ... just download the right Kernel / Build / ROM.. and copy this in your sdcard1 ... do not unpack it.. as .zip is fine. Then turn your Phone Off... And press together till it will vibrate: Volume up + Home + Power.

Chose now:

Wipe Cache
Go advanced
wipe dalvik cache
go back
install zip from sdcard
install zip from sdcard1
choose the Kernel and flash it..
go back and reboot system..
That's it !

If u like clean install, then choose wipe data instead of wipe cache ! But all your apps and settings are gone.
If u are running CM 11 .. then wipe data is not needed... even if u like to flash my ROM Builds... wipe cache and wipe dalvik is enough... but if u have 10.1 or 10.2 .. u need to wipe data first !

PS: Kernel for codina and codinap 20141028 online !!!!!!!!!!!
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28th October 2014, 10:45 AM |#10  
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Another Great Kernel for Ace 2. NUFF SAID!
Keep it up ace2nutzer. Good job.
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28th October 2014, 10:52 AM |#11  
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@ace2nutzer I cant falsh new build, because I cant go to cwm, I use p1 kernel from you and cant go to cwm, always blackscreen.
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