[KERNEL] [4.4] GraKernel

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Grarak

Recognized Developer
Jan 16, 2012
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GraKernel

This kernel only supports CM Based Roms!

Welcome to GraKernel! I am horrible in naming things, so I just take the first 3 letters of my name and combine it with kernel.

I am pretty new to HTC, MSM8226 and DTB. That means it quite hard for me to add more features! But anyway I proudly present you the first custom kernel for the Desire 816

The kernel comes with Synapse. You will find all advanced settings in it.

Sources
Kernel: https://github.com/Grarak/grakernel-msm8226
Ramdisk: https://github.com/Grarak/grakernel-msm8226/tree/grakernel-caf/ramdisk/boot.img-ramdisk

Features
  • CAF Based
  • 3.4.0
  • Build with Google Toolchain 4.7
  • CPU Governors:
    • interactive
    • ondemand (default)
    • userspace
    • powersave
    • performance
  • GPU Governors:
    • msm_cpufreq
    • msm-adreno-tz (default)
    • userspace
    • powersave
    • performance
    • simple_ondemand
  • I/O Schedulers:
    • noop
    • deadline
    • row
    • cfq
    • bfq (default)
    • fiops
    • sio
  • LZ4
  • CSnappy compression/decompression:
  • exfat
  • f2fs
  • Battery Control
  • Intelliplug (intelligent hotplug)
  • Frandom Support
  • Vibration Control
  • MSM Kcal
  • zRam
  • ZCache
  • Sound Control
  • Multicore Power Saving
  • Write Protection has been removed
  • Support for Synapse

Download
GraKernel

Credits
faux123
flar2
savoca
AndreiLux
Codeaurora
CyanogenMod

XDA:DevDB Information
GraKernel A5, Kernel for the HTC Desire 816

Contributors
Grarak
Kernel Special Features:

Version Information
Status: Beta

Created 2014-08-25
Last Updated 2014-09-04
 
Last edited:

Grarak

Recognized Developer
Jan 16, 2012
2,799
10,494
Vienna
How to use kernel features

This kernel comes with Synapse. Synapse has been written by @AndreiLux. The App works with JSON which will generate from UCI (Universal Configuration Interface). So it is possbile to add an interface for a specific kernel. After installing the kernel you will find Synapse in your App Drawer.

Screenshot_2014-08-25-12-10-54.png
 
Last edited:

tpr0

Senior Member
Jun 7, 2012
175
117
Moon
Epic thanks!
I assume stock settings are already topping MSM8226, so its overclocked by default, right?

trying it now on 1.56.401.1 without backup :p:silly:

Garakernel sounds cool :p
 
Last edited:

tpr0

Senior Member
Jun 7, 2012
175
117
Moon
I highly recommend you to read the OP



it's not overclocked

nice, gpu is worth a OC :good:

How can I disable zram? gpu gov simple_ondemand is crashing the phone after apply...

Thanks!

EDIT: wow it fixed my slow charging problem. what does 9vac means?
Undervolting options and oc would be great to have.. thanks
 
Last edited:

Grarak

Recognized Developer
Jan 16, 2012
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nice, gpu is worth a OC :good:

How can I disable zram? gpu gov simple_ondemand is crashing the phone after apply...

Thanks!

EDIT: wow it fixed my slow charging problem. what does 9vac means?
Undervolting options and oc would be great to have.. thanks

set swappiness to 0 for disabling zram

just don't use simple_ondemand I don't know why it's crashing

9vac is a special charger just google about it

I'm working on voltage table
 

n70shan

Senior Member
Jan 10, 2012
626
110
Lahore
set swappiness to 0 for disabling zram

just don't use simple_ondemand I don't know why it's crashing

9vac is a special charger just google about it

I'm working on voltage table
Wow Nice work but i have three immediate questions...
1. how to install kernel? i m new to htc ...
2. can i use it with stock rom??
3. is it come with built in write access? means i have not to do anything and i can delete system files and/ or move app data to external sd card out of the box?????
 

Grarak

Recognized Developer
Jan 16, 2012
2,799
10,494
Vienna
Wow Nice work but i have three immediate questions...
1. how to install kernel? i m new to htc ...
2. can i use it with stock rom??
3. is it come with built in write access? means i have not to do anything and i can delete system files and/ or move app data to external sd card out of the box?????

1. Install it normally? Through recovery?
2. Did you read the OP?
3. See 2

Sent from my HTC D816w using XDA Free mobile app
 

tpr0

Senior Member
Jun 7, 2012
175
117
Moon
set swappiness to 0 for disabling zram

just don't use simple_ondemand I don't know why it's crashing

9vac is a special charger just google about it

I'm working on voltage table

Thank you! btw, do you mean that the phone can be charged with 9v? regular ac/dc charger?
Guess that comes from a raspberry pi module by mistake or something :p
 
Last edited:

tarattata

Senior Member
Feb 17, 2009
102
18
I tried installing the kernel but my 816 will not start HTC state that I have the single sim I apologize for my bad english

Sent from my HTC Desire 816 using XDA Free mobile app
 

Grarak

Recognized Developer
Jan 16, 2012
2,799
10,494
Vienna
I tried installing the kernel but my 816 will not start HTC state that I have the single sim I apologize for my bad english

Sent from my HTC Desire 816 using XDA Free mobile app

If you are not able to provide any logs then don't use this kernel

And use google how to get logs

Sent from my HTC D816w using XDA Free mobile app
 

cksamurai

Senior Member
Aug 29, 2008
104
6
I hope this is a joke

Sent from my HTC D816w using XDA Free mobile app

it wasn't a joke, i have already unlocked my bootloader and rooted my device with cwm installed and tried to gain s-off using firewater and rumrunner, but firewater said try a different kernel so that's why i asked as write protection is disabled in this rom. sunshine is a last resort...

---------- Post added at 07:08 AM ---------- Previous post was at 07:06 AM ----------

so what i meant was if i ran firewater would i have any luck with this kernel, that's all
 
Last edited:

Grarak

Recognized Developer
Jan 16, 2012
2,799
10,494
Vienna
it wasn't a joke, i have already unlocked my bootloader and rooted my device with cwm installed and tried to gain s-off using firewater and rumrunner, but firewater said try a different kernel so that's why i asked as write protection is disabled in this rom. sunshine is a last resort...

---------- Post added at 07:08 AM ---------- Previous post was at 07:06 AM ----------

so what i meant was if i ran firewater would i have any luck with this kernel, that's all

Those tools don't even support our phone

If you want to brick your device go for it
 
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    GraKernel

    This kernel only supports CM Based Roms!

    Welcome to GraKernel! I am horrible in naming things, so I just take the first 3 letters of my name and combine it with kernel.

    I am pretty new to HTC, MSM8226 and DTB. That means it quite hard for me to add more features! But anyway I proudly present you the first custom kernel for the Desire 816

    The kernel comes with Synapse. You will find all advanced settings in it.

    Sources
    Kernel: https://github.com/Grarak/grakernel-msm8226
    Ramdisk: https://github.com/Grarak/grakernel-msm8226/tree/grakernel-caf/ramdisk/boot.img-ramdisk

    Features
    • CAF Based
    • 3.4.0
    • Build with Google Toolchain 4.7
    • CPU Governors:
      • interactive
      • ondemand (default)
      • userspace
      • powersave
      • performance
    • GPU Governors:
      • msm_cpufreq
      • msm-adreno-tz (default)
      • userspace
      • powersave
      • performance
      • simple_ondemand
    • I/O Schedulers:
      • noop
      • deadline
      • row
      • cfq
      • bfq (default)
      • fiops
      • sio
    • LZ4
    • CSnappy compression/decompression:
    • exfat
    • f2fs
    • Battery Control
    • Intelliplug (intelligent hotplug)
    • Frandom Support
    • Vibration Control
    • MSM Kcal
    • zRam
    • ZCache
    • Sound Control
    • Multicore Power Saving
    • Write Protection has been removed
    • Support for Synapse

    Download
    GraKernel

    Credits
    faux123
    flar2
    savoca
    AndreiLux
    Codeaurora
    CyanogenMod

    XDA:DevDB Information
    GraKernel A5, Kernel for the HTC Desire 816

    Contributors
    Grarak
    Kernel Special Features:

    Version Information
    Status: Beta

    Created 2014-08-25
    Last Updated 2014-09-04
    10
    Changelog

    0.3.1
    • swtich to CAF Kernel (supports only CM based ROMs for now on)

    0.3
    • add support for a5ul
    • disable zram by default

    0.2
    • add Sound Control
    • switch to Google Toolchain 4.7
    • Pronto version 3.2.3.172

    0.1
    • Initial Release
    8
    How to use kernel features

    This kernel comes with Synapse. Synapse has been written by @AndreiLux. The App works with JSON which will generate from UCI (Universal Configuration Interface). So it is possbile to add an interface for a specific kernel. After installing the kernel you will find Synapse in your App Drawer.

    Screenshot_2014-08-25-12-10-54.png
    4
    updated to 0.3!
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