[KERNEL] [9] A2N Kernel For Galaxy S8/S8+/Note8 [EXYNOS] [HIGH-END] [STABLE] [V. 2022.06.24]
- Thread starter ace2nutzer
- Start date
but you can do more than that.
Well, maybe I should change the thread title in "Hardcore Overclockers and Modding for the S8" 
What about ACE in the hole of Galaxy S8 Kernel development?Well, maybe I should change the thread title in "Hardcore Overclockers and Modding for the S8"
I've noticed that since I've released the first GPU OC kernel this thread gained again more hits per day like 3 years ago. Actually it has over 1000 hits per day, this is not so bad for a 5 years old phone lol.
Many, MANY people still use the S8. And the presence of your Kernel to prolong the lifetime of this device is surely welcomed.
@TechNoobForSale
btw this is my stock dvfs table:
the table you see on post #3 is already auto optimized from latest kernel for the better stablity. (e.g. little CPU @ 2GHz stable)
As you can see MIF voltage for the first 2 steps is just "0", I've added voltage as well, but it doesn't accept max_freq above our stock max. Or maybe my phone just can't handle it. Anyway, honestly I don't care much, as I don't think that would bring much more speed. Our stock max freq is already fast enough. Working on new test kernel lol.
btw this is my stock dvfs table:
the table you see on post #3 is already auto optimized from latest kernel for the better stablity. (e.g. little CPU @ 2GHz stable)
As you can see MIF voltage for the first 2 steps is just "0", I've added voltage as well, but it doesn't accept max_freq above our stock max. Or maybe my phone just can't handle it. Anyway, honestly I don't care much, as I don't think that would bring much more speed. Our stock max freq is already fast enough. Working on new test kernel lol.
Yeah as I said in the past, your stock voltages are lower than my stock table. Also I agree, not much benefit in tryharding to unlock RAM at 2093MHz on this. While GPU may benefit a bit from the extra bandwidth, I doubt it would behave like a Ryzen iGPU (The more bandwidth, the merrier, essentially since the Mali G71 MP20 is much slower and I doubt it would ever run into bandwidth issues even running at 839MHz. That could be an issue with the Exynos 9810, since I heard that its GPU shares a lot with the CPU.
until it can beat all s9 seriesWell, maybe I should change the thread title in "Hardcore Overclockers and Modding for the S8"
the more transistor and more small the transistor that make a SOC, CPU, or GPU faster like if you have 3 transistor at 100mhz it can lose by 6 transistor at 50mhz
Yes but that’s not my point at all.
Modern desktop iGPUs usually are simply more powerful than our G71. So it’s unlikely that we’ll ever run in bandwidth issues. That’s all
Well, I don’t want to be “that guy”. We DID just match or slightly beat the S9 series GPU at stock and we wreck it in user experience thanks to Ace’s effort. But we have no hope of matching the CPU. It’s too far ahead. 2808MHz would get us remotely close but said frequency is nearly impossible to achieve AND sustain.until it can beat all s9 series
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3Well, maybe I should change the thread title in "Hardcore Overclockers and Modding for the S8"2
without charging, i get heavy shuttering, and high cpu usage (cpu spikes). Anyway, the gpu is not important for me, i never playing games on my phone. I just want to know the limits2
Remember that it depends on what you mean with "not stable"
If the GPU benchmarks are STUTTERING and GPU usage is low, then you need the fast charger. If benchmarks are FREEZING/phone is rebooting, you need more voltage, or simply your limit is at 764MHz.2
That's kind of how it works due to how much voltage the battery can deliver in a given moment, but for most of us, 650mV at 764MHz is impossible. I crash at 720mV @764MHz, I needed 730mV. My 839MHz is super stable at 760mV.
It's true that you should keep voltage lower instead of higher on this device, due to its voltage limitations, but it's also true that you can't go TOO low, you'll crash.1 -
6
It was 100% not due GPU instability but due to lower power from battery. There were 0 graphical glitches. No blackscreens. Nothing. Just stuttering, temp was low and GPU usage kept going from 0 to 40 then 99 then back to 0. It's definitely a battery problem. I will go at it like I did in the past, and keep the charging cable in.
Also about 2808MHz not being stable, well, it really is a dilemma. For me trying to run at that frequency means getting an awful instant crash (really awful).
I can 100% confirm that CPU big at 2574MHz and GPU at 839MHz can work together just fine. Maybe not 2704MHz CPU but 2574MHz for sure. I think that at 2808MHz the SoC is pushed to the limit and since most of us have average ASV values, it's really unlikely that we ever run it stable, even at a crazy voltage like 1.5V.
But again, if this can be of any help, I doubt 2808MHz would even be useful at all. 2704MHz already overheats like an FX 9590 on an air cooler, let alone 2808MHz. You would quite literally keep throttling even while scrolling home screen pages.
Now, I think that by now I know you pretty well, and you VERY hardly stop in front of a wall. But I'm telling you, it isn't THAT worth it.
Now if in a week you come and state that you made 2808MHz stable, well, I wouldn't be surprised. It's Ace2Nutzer after all.
Right now I recommend you try to get the RAM OC in. You peaked. You did it. You took an average S8 and extracted out of it 99,9% of all it will ever be able to give to an user. I don't think there is much to optimize left, or instabilities to fix anymore. It's complete. A2N Kernel for Galaxy S8/S8+/Note8 is complete to my eyes. From now on it's just tweaking if there is any tiny tiny issue here and there. But the bulk and the details are done. You did it
I tested in gaming too today, specifically ARK: Survival Evolved and Genshin Impact. At stock frequencies and at 2496MHz big cores and 683MHz GPU. I didn't see throttling, at all. So yeah. Best user experience Kernel, best battery Kernel (NOT debatable), best gaming Kernel, best productivity Kernel. What else is left? Lmao4OK Guys New Build is Up !!
Changelog
Kernel V. 2022.06.12
- GPU: updated voltage table - stable OC up to 839 MHz !!!
MD5 g950x: 10ea43db0a94105463951cced5ebb852
MD5 g955x: 4e32abe24038a4a3ea4096f2203c8ab23Btw the last idea I had it really worked ! Initial GPU OC @ 839 MHz.
To be continued ...3
You want me to be honest? Your frequency scaling driver is already extremely fast and I hardly ever noticed lags. So even if the CPU is at 741MHz, it will go up to 2314 immediately if needed. It's really a non issue. That's a problem stock Samsung driver has, which sucks badly. But if you want to make it even better, be my guest lmao.
What's next in the roadmap? Little cores OC? MIF OC? I think that the Kernel is nearing 100% stability. which is your objective, you said. But this thing is at 98% out of 100% of its full capabilities already. You carried the whole S8 Kernel development lmao.3 -
74Supports all S8 / S8 Plus / Note8 Exynos Variants Running Android 9
This Kernel Aims are to
- reduce the power consumption
- reduce device heat
- improve the performance
- make it more smooth
- reduce RAM usage
- improve RAM management
- extend device features
- and many more ...
A2N Kernel Special Features
- charger control
- battery IDLE and battery care
- stable CPU OC up to 4 x 2,7 GHz - thanks to my custom DVFS driver
- stable GPU OC up to 839 MHz - thanks @ me lol
- adjustable CPU / GPU / Battery Max Temp
- voltage control for all clocks (CPU lit/big - GPU - RAM - bus clocks etc..)
- fixed time to full battery
- flashlight tuning
- wireguard support - always latest version
- DriveDroid support
- Dex with any HDMI adapter - thanks @ Barna Keresztes
- Samsung Dex: WQHD support with every adapter - thanks @ craftingmod
- higher SOT - with new battery up to 10 h, with old battery see screenshots
- Wi-Fi calling & VoLTE works
- S8: RAM upgrade - 3679 @ 3717 MB
- Note8: RAM upgrade - 5339 @ 5376 MB
- unlocked higher CPU Freq steps - thanks @Noxxxious for initial CPU OC
- SELinux in permissive mode - thanks @Noxxxious
- fake enforce for SELinux (you can enable it in a2n demo app)
- DRM - L3 stable streaming
- SafetyNet bypass (you need to enable "MagiskHide" in "Magisk" APK
- Google Play - certified device
- replaced SSWAP with zRam - fast LZ4 compressor
- optional filesystem: NTFS
- kernel modules for CIFS and NFS
- optional device encryption
- HMP driver fix
- extra gamepads drivers: Xbox / Sony PS / Nintendo Wii
- ability to OC CPU only for screen on
A2N Kernel Control
Best way to tune this kernel to your needs
# App Features #
# Power
-- Charger Control
For faster charging. - Range: 100 - 3000 / 3300 / 3500 mA (S8 / Note8 / S8+)
-- Battery Informations
Like accepted charging current, input voltage, battery temperature and battery voltage.
-- Battery Care
E.g. stop charging at 95 % to reduce battery aging. - Range: 50 - 100 %
Battery IDLE feature, useful for DeX or gaming.
Set Max charging temperature. - Range: 30 - 45 °C
-- Battery Service
Shows charge cycles and ability to reset to 0.
Check real battery capacity in % / mAh and ability to reset. (battery gauge recalibration)
-- Disable (Buggy) Moisture Detection
Ability to disable moisture detection, for the case the USB and Jack-port is dry but you get still a moisture warning.
# Screen
-- Input Booster
Adjust touch boost CPU duration in ms, to improve scrolling.
# CPU
-- Overclock Control
BIG CPU: 741 - 2808 MHz* - default: 2314 MHz
LITTLE CPU: 455 - 2002 MHz* - default: 1690 MHz
Set Max Freq for screen OFF.
Ability to disable boost, for powersave.
Governor up_threshold, to adjust balance between performance and powersave.
BIG CPU DVFS Max Temp (thermal throttling)** - Range: 45 - 100 °C
# GPU
-- Overclock Control
260 - 839 MHz* - default: 546 MHz
Ability to disable boost, for powersave.
Governor up_threshold, to adjust balance between performance and powersave.
GPU DVFS Max Temp (thermal throttling)** - Range: 45 - 100 °C
* Max stable Freq depends on the quality of the SoC !
** To avoid too big performance drops from stock thermal throttling driver.
# Performance Profiles
-- Powersave
-- Balanced
-- Performance (Kernel Default)
-- Performance Plus (Gaming / OC) (Adjustable CPU / GPU Freq)
# RAM
-- Memory Management
Swap / zRam* - LZ4 compressed swap block-device in RAM - Choice: 0 - 100 % of RAM size
Adjust Swappiness, page-cluster and read_ahead_kb.
Ability to drop caches / buffers, to free RAM.
* For multitasking, gaming, responsiveness and battery life.
# Network
Load kernel module for network file systems
SMB2/SMB3 / CIFS
NFS v2, v3 & v4
L2TP - used for VPN.
Wireguard - Secure Network Tunnel.
TCP Congestion Control - Choice: cubic, new reno, bic, westwood+, vegas, veno, hybla, etc..
Wi-Fi Band Selection, choice: "2.4 GHz / 5 GHz", "2.4 GHz only" or "5 GHz only".
# Misc
-- Torchlight Tuning
Increase brightness for the highest level in Android quick settings. - Range: 10 - 17 - Default Max is "10"
-- LED-RGB
Set blink ON / OFF delay for notifications / low battery.
Optimize RED, GREEN, BLUE LED - Increases brightness by disabling powersave mode on low lux.
-- Accelerometer Calibration
# File Systems
-- Load kernel module for NTFS.
# Advanced Power Menu
Reboot to:
-- system
-- recovery
-- download
or:
-- shutdown
- Settings --> Phone Info --> Software info --> build number (tap 7 times)
- Tap 2 times the back-key
- Developer settings --> enable "OEM unlock"
- Download TWRP for S8 / S8+ / Note8 accordingly (the .tar version, for ODIN flash over PC)
- Download latest A2N Kernel for S8 / S8+ / Note8 accordingly and put the file in USB-thumb or in micro-sd-card
- Download latest Magisk.apk
- Rename Magisk.apk to Magisk.zip and put the file in USB-thumb or in micro-sd-card
- Power off
- Boot in Download-mode
- Flash the .tar twrp file with ODIN (disable "auto-reboot" and "reset time")
- Reboot directly to TWRP
- wipe ---> format data ---> "yes" (type yes) and ENTER.
- Flash latest A2N Kernel
- Flash Magisk.zip
- Optional but recommended: flash AdAway_hosts_patcher_g95x.zip (battery drain fix for vanced YouTube and vanced YT music)
- Reboot to system and enjoy !
- Note: first boot takes around 15 minutes for proper app optimization !
Update A2N Kernel
- Flash Magisk.zip
- Reboot to system and enjoy !
Big thanks @ Mobile Tech Point for making this awesome video !
Note: the video is no longer up-to-date, but it's still a good starting point.
Current Bugs and Changelog
FAQ
Join Telegram Group
Note: the group is not maintained by the kernel developer.
Disclaimer
I am not responsible for anything that happens after flashing the work provided here.
Sharing is caring, so according to the (much unwelcomed) rule 12 you can use my open source on GitHub without my explicit consent or credits. But this is where the caring stops as I do not allow you to use any of my own provided files (except for unmodified stock files). Section 3 of this rule states that you can try to bypass my explicit consent by releasing it as your own when you succeed to make significant changes to the work, otherwise i'll report you and your thread will be removed.
Credits
Linus Torvalds - Linux kernel
Google - Android kernel patches
Samsung - device kernel source
@corsicanu - TWRP recovery - original thread
@S.AMU for providing FTP-Server
000webhost - Webhosting
@Noxxxious for the nice disclaimer text
XDA members - Reporting bugs
Contributors
ace2nutzer
Source Code: https://github.com/ace2nutzer/Samsung_dreamlte_Kernel32Buglist - Kernel V. 2022.06.24
- None so far
Kernel V. 2022.06.24
- Charger Control: fixed bugs in LPM and battery IDLE feature
- CPU/GPU/RAM/etc...: added voltage control
- CPU/GPU: improved OC stability (CPU lit works stable @ 2 GHz for me)
- Sound: updated pm_qos - should reduce sound scratching while idle and screen off
- GPU: added voltage control for OC steps (stable up to 839 MHz)
- CPU: added "little only" (for powersave)
- updated defaults
Kernel V. 2022.06.12
- GPU: updated voltage table - stable OC up to 839 MHz !!!
Kernel V. 2022.05.13
- HMP_CUSTOM: updated driver
- Audio: fixed stuttering - thanks @MUNISH MONGA for report and tests
- DRM switched to L3 (Netflix fix)
- Improved stability
A2N Kernel Control V. 4.8
- Debug: added "fix permissions" (useful if you use this app with other kernel manager apps)
- Improved stability
- Bug fixes
17FAQ
Q: With which ROMs this Kernel is 100 % Compatible ?
A: Currently only with Android 9 custom ROMs, but Samsung stock ROM is recommended.
Q: Is this Kernel 100 % Safe ?
A: Yes.
Q: Will this Kernel Overheat the Phone if I use Highest Settings ?
A: No, you can't do anything wrong. Your phone has hard- and software overheat protection.
Q: How to Revert all Changes Made by this Kernel ?
A: Flash latest 3-parted stock ROM with ODIN or flash the Samsung kernel from my download site.
Q: How to bypass SafetyNet ?
A: Anable MagiskHide in Magisk app.
Q: How i can Tune this Kernel ??
A: Everytime you install or update this kernel you will face an red (demo) app "A2N Kernel Control..." open this app, and it'll redirect you to Google Play to get the full version (blue app).
Q: Can i use and Tune your Kernel with other Kernel Manager Apps ?
A: Yes, but you need first to unlock kernel with the A2N app full version.
Q: I've Installed the Full Version of the App, Will it Change any Kernel Settings by Default if i do not Change them ?
A: No, default app settings = default kernel settings.
Q: I've the Full Version of the A2N Kernel Control App, Do i still need the Demo Version of the App ?
A: Yes, there are some special features in-app-menu like "Fake Enforce" and debugging features for easy bug reports.
Q: How to Charge from 10 % to 100 % In just 1 h ?
A: E.g. set "AC Current Max" and "Maximum Charging Temperature" to the Max.
Q: How to get Max Speed for e.g. Highest FPS in Games ?
A: Set BIG / LITTLE CPU and GPU Freq to the Max, but avoid to use "unsafe" Freq's.
Then set CPU / GPU --> DVFS --> "Maximum Temperature" to the Max.
Now you can even cook an egg on your phone !
Q: Will my Custom A2N Settings Survive if i install Stock Kernel and then going back to A2N Kernel ?
A: Yes, as long as you don't uninstall it.
Q: Can i use your Kernel Control App with other Custom Kernels ?
A: No, it's not universal kernel manager app.
Q: My A2N App is Crashing after an Update, how to fix it ?
A: Re-install it. If it doesn't help, wipe dalvik-cache in recovery.
Q: My A2N App shows: "Please check your internet connection" - But i've good internet connection. - How to fix it ?
A: Settings --> network settings --> use private DNS server like "dns.adguard.com" - confirmed to work by user @Arnz09 - see his post here.
Otherwise send me a pm with the screenshot and you current location (city)
Q: Why I get lower benchmark scores with this kernel compared with the Samsung kernel ?
A: This kernel uses by default Max CPU/GPU DVFS Temp 65 °C to reduce the device heat. You can buy the full version of the A2N app to set the DVFS Temp up to 100 °C to get higher scores than on stock kernel.
Q: Why the Android Battery setting "fast charging" has no effect on this kernel ? - It charges always with around 1500 mA.
A: Because it would conflict with the built-in charger control.
The default charging current of approx. 1500 mA means no fast charging by default, even if you actually see "fast charging" in the notification section. This is also useful to reduce battery stress and device heat. To charge even with higher speed/current than on stock kernel you need to buy the full version of the A2N app.
Q: Why I've to pay money for just changing kernel settings ?
A: Well quality has its price. Also nobody forces you to use this kernel.
You can flash other custom kernels or flash the Samsung stock kernel from my download site. Good luck !
Q: When we get an update ?
A: This kernel is almost 100 % stable and works very well. Also this phone is now a bit "old" and therefore don't expect frequent updates.
Also don't ask for ETA's and if you do anyway, I'll ignore.
Q: What is the benefit of editing the voltage table ?
A: to increase OC stability increase voltage and to decrease the device heat, decrease voltage. Last one will improve performance due to less throttling ! So it depends on your needs.
Q: How much is safe to undervolt ?
A: approx -50 or -75 mV is considered to be "safe".
Q: How to edit voltage table ?
A: First of all: to set different CPU/GPU clocks or voltages you need to have Magisk installed and buy my A2N kernel control app full version. This will unlock all premium features of this kernel.
To edit GPU voltages for steps > 572 MHz ---> use the A2N app full version.
To change all the other voltages, you need to use ADB and later once you have found the proper voltages for your phone then you can write them to a script that will be executed at every boot.
Note: this voltage table is from my phone. Your phone may have a different table, so please use your table when it comes to calculate how much you want to undervolt. (50 - 75 mV or 50000 - 75000 uV should be safe)
I'll help you, here we go !
Q: How to Report Bugs ?
- Please DO NOT report bugs if you are:
--- using "unsafe" Freqs
--- not using the latest release !
--- not using Samsung stock ROM (based stock ROMs are custom ROMs !)
A: Open the red A2N Kernel Control demo app and check in-app-menu (3 dots) then "Debug" and then on "logcat and dmesg" if you faced an app crash or if some features didn't work.
If the phone rebooted randomly, then tap on "last_kmsg". You will find the logs in your internal storage. After that you can attach them here in your bug report, by clicking "Attach files".
ROM:
Kernel version:
A2N app version:
BUG:
How to reproduce:
Same bug with stock kernel ? : YES / NO
Download stock kernel for bug reference: S8 / S8+ / Note8
BUG REPORTS THAT DO NOT FOLLOW THESE RULES WILL BE IGNORED !!!12Hello dear Friends i'm back with a great Changelog ...
Kernel 20191019
- FULL Android 9 Pie Support
- Based on Stock Source Code DSI1
- Ramdisk DSI1
- Compiled with the OFFICIAL ARM/Linaro GCC 8.3
- Optimized Memory Managent
- Improved Performance
- Improved Battery Life
- Reduced Device heat
- More Responsive
- Fixed Laggs (especially for some 2D Games)
- Increased Efficiency
- RAM: 3485 @ 3711 MB
- Unlocked higher CPU/GPU Freq Steps - Thanks @Noxxxious
- SELinux in permissive mode - Thanks @Noxxxious
- Disabled SSWAP
- Added zRam Support with fast LZ4 Compressor
- Added KSM Support - patched for Android by me
- Optimized Input Booster
- Fixed very bad CPU IDLE
- CPU: Interactive @ conservative gov - for higher efficiency
- Added Wireguard Support
- CPU: Cluster 0: Screen ON min_freq 455 @ 715 MHz to Fix Lags - 455 MHz Step is used for Screen OFF
- Compiled with DEFAULT_USE_ENERGY_AWARE / WQ_POWER_EFFICIENT_DEFAULT - for better Battery Lifetime
- Optimized Crypto, NEON SIMD Hardware Acceleration (e.g. faster device encryption due of hardware acceleration)
- Disabled HMP since it serves nothing - Hardware doesn't allow to use real cpu_hotplugging ...
- Added Charger Control 2.0 by me - Allows to configure custom max input current from 100 - 3000 mA in 100 mA Steps separately for AC / USB 2.0 / USB 3.0 / Wireless - that means real Fast Charging even with Screen ON - Allows even to charge at max current possible with 3rd-party Chargers !!
- Added Flashlight Torch Control - You can adjust Brightness of your Torch from 1 - 15 - Default/Stock Kernel is just 5
- SELinux: Removed Audit dependency - Thanks @ kerneltoast && arter97
- Added Support for F2FS
- Accurate remaining time to full charged battery
- init.d Support
- And many more Kernel Tweaks - i can't list them all here ... changelog is already too long isn't it ?! :laugh:
A2N Kernel Control V1.4
- The best Way to manage this Kernel for full functionality (3rd-party Kernel Manager Apps will not work properly with this Kernel)
- Compiled with API 28 Android 9 Pie
- Power: Charger Control - Allows to configure custom max input current from 100 - 3000 mA in 100 mA Steps separately for AC / USB 2.0 / USB 3.0 / Wireless - that means real Fast Charging even with Screen ON - Allows even to charge at max current possible with 3rd-party Chargers !!
- Added switch for "Adaptive Fast Charging" so u can directly toggle AFC in the App.
- Ability to check actual accepted charging current and Input Voltage
- CPU: OC Control: Cluster 0: up to 2002 MHz and Cluster 1: up to 2808 MHz
- CPU Governor tuning: Adjust up_threshold to balance between Battery Lifetime and Performance separately for each Cluster
- GPU: OC Control up to 839 MHz
- Hardcoded Performance Profiles:
- --> Powersave (Underclocked)
- --> Balanced (Kernel Default)
- --> Performance (Overclocked)
- Misc: switch for zRam, KSM
- Misc: Torch Brightness Control - up to 3 times brighter flashlight than with a stock Kernel !!
- Misc: Ability to load kernel Module for CIFS and NFS with just one Tap
- Misc: Accelerometer Calibration
- Debug: u can call this Menu over the App built-in Menu (3 dot) - ability to save logcat and dmesg with one tap to your sdcard ..
If u've any Questions, feel free to ask here.
Enjoy your new A2N Kernel !10New Build is Up !!
Changelog
Kernel 20200519
- Source Update DTA6 -> DTC6
- Charger Control: allowed higher chg_temp - should charger faster, especially for 3000+ mA
- defconfigs: re-enable Gear VR related drivers
--------------------------------------------------------------------------------
Updated also TWRP Kernel.
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