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[KERNEL] leanKernel for Note 20 Ultra (Snapdragon ONLY)

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chrisaw

Senior Member
Jun 12, 2007
305
235
Description

This is the first publicly released build of leanKernel for the Note 20 Ultra (Snapdragon ONLY!)

Download

Google Drive

Changelog

leanKernel-1, 2, 3, 4, 5, 6 and 7


- Were not released

leanKernel-8

- Spoof stock kernel defconfig to prevent "device is damaged" warning
- Built ALL modules directly in to kernel
- Spoof SafetyNet relevant arguments on cmdline to allow easier passing of SafetyNet
- Disabled KNOX_NCM
- Added Wireguard
- Enabled power efficient work queues
- Set schedutil as default CPU scheduler
- Added a bunch of TCP/IP algos and set westwood as default
- Disabled KPERFMON
- Added Boeffla Wakelock Blocker (with no defaults blocked)
- Added KCAL
- Added KLAPSE 5.0
- Added a sysfs interface for use_spi_crc and enabled by default (/sys/kernel/mmc/use_api_crc)
- Added kAdaway ad blocking and disabled by default (/sys/kernel/leankernel/use_kadaway)

Thanks

@ianmacd - countless ideas and lots of his code went in to making this kernel possible.
@tbalden - implemented his kAdaway functionality and adapted it for a root-enabled environment.

Source

The source code for leanKernel is available at:

Build Script: https://github.com/cawilliamson/android_build_c2q_kernel
Kernel Sources: https://github.com/cawilliamson/android_kernel_samsung_c2q
 
Last edited:

jBalter

New member
Sep 29, 2021
1
0
My Note20ultra is blocked by the operated (Au KDDI) from Japan and it is a different model that I have never seen (SCG06) I only know that it is snapdragon but there is almost no information about it on the internet, will it be that changing the CSC and auterizing the ROM will it unlock SIM Card for other operators? I've already checked the IMEI and it doesn't seem to be blocked, nor is it on any Black list. Do you know any software or metuto for this type of unlocking? already tried to change the ROM via Odin using a ROM from other countries for example "SM-n986w" but all give PIT and partition error. Would a constomized ROM do the trick?
 

chrisaw

Senior Member
Jun 12, 2007
305
235
My Note20ultra is blocked by the operated (Au KDDI) from Japan and it is a different model that I have never seen (SCG06) I only know that it is snapdragon but there is almost no information about it on the internet, will it be that changing the CSC and auterizing the ROM will it unlock SIM Card for other operators? I've already checked the IMEI and it doesn't seem to be blocked, nor is it on any Black list. Do you know any software or metuto for this type of unlocking? already tried to change the ROM via Odin using a ROM from other countries for example "SM-n986w" but all give PIT and partition error. Would a constomized ROM do the trick?

I have no idea about that - I suggest you raise a separate thread since this isn't related to the my kernel. :)
 

elmor0

Senior Member
Mar 20, 2009
646
107
Samsung Galaxy Note 20 Ultra
Installation & un-installation (return to stock) instructions please.

Main benefits over stock? How does battery life compare to stock?

Thank you for your hard work & for giving us Snapdragon users another option.
 

chrisaw

Senior Member
Jun 12, 2007
305
235
Do you need a rooted device for this?
Not necessary a rooted device but you do need your bootloader unlocked.

Installation & un-installation (return to stock) instructions please.

Main benefits over stock? How does battery life compare to stock?

Thank you for your hard work & for giving us Snapdragon users another option.
Installation Process:

- Backup BOOT partition
- flash the ZIP from TWRP

Uninstallation Process:

- Restore BOOT partition backup

The benefits are listed in the feature list above. Battery life should be very close to identical to stock - there's no massive battery saving changes here I'm afraid. More about additional functionality.

Thanks! Just installed it tonight.

My pleasure - hope you like it! :)
 
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statultra

Member
Nov 13, 2009
6
0
I attempted a installation on my SM-N986U1, but it just kept boot looping on me. I reinstalled the original backup boot and its fine now.
 

Cat_tails

Member
Nov 28, 2020
12
0
Good work bro! Works fine on my sm-n986u. Any chance of a permissive kernel in the near future?
 

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  • 2
    Description

    This is the first publicly released build of leanKernel for the Note 20 Ultra (Snapdragon ONLY!)

    Download

    Google Drive

    Changelog

    leanKernel-1, 2, 3, 4, 5, 6 and 7


    - Were not released

    leanKernel-8

    - Spoof stock kernel defconfig to prevent "device is damaged" warning
    - Built ALL modules directly in to kernel
    - Spoof SafetyNet relevant arguments on cmdline to allow easier passing of SafetyNet
    - Disabled KNOX_NCM
    - Added Wireguard
    - Enabled power efficient work queues
    - Set schedutil as default CPU scheduler
    - Added a bunch of TCP/IP algos and set westwood as default
    - Disabled KPERFMON
    - Added Boeffla Wakelock Blocker (with no defaults blocked)
    - Added KCAL
    - Added KLAPSE 5.0
    - Added a sysfs interface for use_spi_crc and enabled by default (/sys/kernel/mmc/use_api_crc)
    - Added kAdaway ad blocking and disabled by default (/sys/kernel/leankernel/use_kadaway)

    Thanks

    @ianmacd - countless ideas and lots of his code went in to making this kernel possible.
    @tbalden - implemented his kAdaway functionality and adapted it for a root-enabled environment.

    Source

    The source code for leanKernel is available at:

    Build Script: https://github.com/cawilliamson/android_build_c2q_kernel
    Kernel Sources: https://github.com/cawilliamson/android_kernel_samsung_c2q
    1
    Do you need a rooted device for this?
    Not necessary a rooted device but you do need your bootloader unlocked.

    Installation & un-installation (return to stock) instructions please.

    Main benefits over stock? How does battery life compare to stock?

    Thank you for your hard work & for giving us Snapdragon users another option.
    Installation Process:

    - Backup BOOT partition
    - flash the ZIP from TWRP

    Uninstallation Process:

    - Restore BOOT partition backup

    The benefits are listed in the feature list above. Battery life should be very close to identical to stock - there's no massive battery saving changes here I'm afraid. More about additional functionality.

    Thanks! Just installed it tonight.

    My pleasure - hope you like it! :)