[KERNEL][E5823/E5803] Zach's Kernel Playground for Z5C, WIP (work in progress)

[zacharias.maladroit]

September 2021 update:

Since I've been getting requests lately due to Google's updated Google Drive policy - here's the updated share link for the Z5 Compact kernels

Z5C-Kernels - Google Drive

drive.google.com

Final notice: Since my Z5 died (it's broken into pieces, glass shattered) - development is effectively halted - NO more updates - sorry

This is a Stock (Sony) ROM Kernel and WILL NOT work on AOSP, CM, etc.

aka SunKernel for Z5 Compact - Stock ROM (for now only stock)

This is an extension of the Xperia Z5/Z5 Dual "sumire" main thread over at: https://forum.xda-developers.com/xp...und-z5-wip-t3340725/post65936553#post65936553


Okay,

so the kernel is also available for the Z5 compact series


I can't test if it works due to lack of that very device - Enjoy !

Keep in mind that building for the Z5 "Stock" ROMs and "Stock" Kernels, you're constantly facing the following tradeoff:

• compatibility with pre-built "core" kernel modules (e.g. texfat [proprietary exfat microSD fs driver])
• compatibility with pre-built "goodies" kernel modules (e.g. video and other acceleration, hwcodecs, ...)
• losing features that can NOT be replaced by similar ones (e.g. ecryptfs, wlan, exfat, etc.)
• when going too far the device doesn't boot or simply hangs on bootanimation

this resulted in a couple branches (at least several dozen) that are partially or totally broken :silly:

[snip]
...
[snip]





More info on the Latest Kernel can be usually found at:

AT the end of the thread

( I KNOW - I should have reserved a few posts for better overview )

---------------------------------------------------------------------------------

[Download] How to get the current ("corona", 5.11) Kernel(s) - Step by Step:

1)
Choose your device from one of the 4 folders

Z5 + Z5 Dual: https://drive.google.com/open?id=0BykGGWB96CBQQy05VURLbzJTZlU
Z5 Compact: https://drive.google.com/open?id=0BykGGWB96CBQVE0tb2dieTZMXzg
Z5 Prem + Z5 Prem Dual: https://drive.google.com/open?id=0BykGGWB96CBQaVZTdnF5QnVTMU0
Z4/Z3+ + Z4/Z3+ Dual: https://drive.google.com/open?id=0BykGGWB96CBQa2xBdHR5TzlrNUE

2)
At the upper right, click on "List View"

3)
At the top of the table, there are 3 labels (name, owner, [last] modified, File size)

click on "Last modified", the newest Kernels should be shown either at the top, or at the bottom

4)
Download the latest Kernel

5)
???

6)
Profit !

Before starting to test/use keep in mind that this is WIP (work in progress),

that means - NO guarantees,

backups before flashing are a MUST (especially your microSD card content !)

stability, speed, improved battery and satisfaction are a great side-effect to have.

You have been WARNED !


Enjoy !


Obligatory Source:
(according to the rules in single commits no giant blobs, authorship kept)

https://github.com/zachariasmaladroit/android_kernel_sony_msm8994_kitakami_r2/branches

 

[zacharias.maladroit]

Please let me know if that kernel boots on the Z5 compact,

the initramfs contains changes to restore DRM functionality and the TWRP bootup script which allows you to press a volume button to boot into recovery

Cheers

 

[gyuuuu]

boot loop T.T

 

[featzhang]

Since v22a remove CPUQuiet as it causes random reboot,so please remove it?

 

[zacharias.maladroit]

boot loop T.T

Oh **** !

Thanks for the feedback,

I had suspected that there would be issues - will see what to change and to get it working

Since v22a remove CPUQuiet as it causes random reboot,so please remove it?

CPUQuiet is enabled, no ?

I haven't tried out latest AndroPlus Kernel but from the source it should be enabled: https://github.com/AndroPlus-org/android_kernel_sony_msm8994_kitakami_r2/commits/32.1.A.1.163_r2

input boosting is disabled by default since that leads to trouble

 

[featzhang]

Oh **** !

Thanks for the feedback,

I had suspected that there would be issues - will see what to change and to get it working



CPUQuiet is enabled, no ?

I haven't tried out latest AndroPlus Kernel but from the source it should be enabled: https://github.com/AndroPlus-org/android_kernel_sony_msm8994_kitakami_r2/commits/32.1.A.1.163_r2

input boosting is disabled by default since that leads to trouble

I saw it from AndroPlus's changelog:https://kernel.andro.plus/kitakami_r2.html

v22a
Disabled CPU Quiet as it caused random reboot

 

[zacharias.maladroit]

Pulled the Kernel,

need to figure out what exactly is different about the Z5 Compact or why it's not working when using a similar build procedure compared to Z5 and Z5P
@Tommy-Geenexus would you kindly please send me the exact build command and the tools you're using to build your latest Zombie kernel ?

I believe it should be no different than the current ones I'm already using but perhaps I've overlooked anything

Many thanks in advance

 

[Tommy-Geenexus]

Pulled the Kernel,

need to figure out what exactly is different about the Z5 Compact or why it's not working when using a similar build procedure compared to Z5 and Z5P

@Tommy-Geenexus would you kindly please send me the exact build command and the tools you're using to build your latest Zombie kernel ?

I believe it should be no different than the current ones I'm already using but perhaps I've overlooked anything

Many thanks in advance

Here's my build-script: http://pastebin.com/uAw9V4K5

 

[zacharias.maladroit]

Here's my build-script: http://pastebin.com/uAw9V4K5

Thanks a lot !

Okay, so on first glance you're using the uncompressed kernel and the dt.img, like you previously mentioned

in essence it equals the build from Lollipop with the change of having to use an updated mkbootimg.

I guess you also had to switch mkbootimg when building from Lollipop to Marshmallow ?

The dtbtool I'm using is from cyanogenmod but I'm not sure whether that is the correct one (at least it worked for the Lollipop kernels),


Thanks

 

[zacharias.maladroit]

Does the following kernel work on Lollipop ?

Source:

32.0.A.6.200_AP_Sun-Kernel_v14%2B


Changes from AndroPlus 14:

• undervolting/under|overclocking removed (doesn't work)
• sound enhancements
• FauxSound
• KSM optimizations
• load reduction (battery runtime, smoothness)
• a few fixes

 

[featzhang]

No Lollipop devices

 

[zacharias.maladroit]

No Lollipop devices

Untrue

I know at least a few that reverted to use Lollipop

You know, you can anytime flash back and forth between Lollipop and MM via FlashTool and XperiFirm

 

[wacwac]

Untrue

I know at least a few that reverted to use Lollipop

You know, you can anytime flash back and forth between Lollipop and MM via FlashTool and XperiFirm

Hello, is it flashable through recovery?

Gesendet von meinem E5823 mit Tapatalk

 

[wacwac]

Okay. I was able to boot without any problem, but my service provider was rejected, although the mobile is free to use any provider

Gesendet von meinem E5823 mit Tapatalk

 

[was12]

Is there any new build for your kernel ? I am waiting for mm version. @zacharias.maladroit

 

[zacharias.maladroit]

Is there any new build for your kernel ? I am waiting for mm version. @zacharias.maladroit

Sure,

you could give the one attached a try, whether it works

(first via, e.g.

fastboot boot boot.img

if it goes to the charging symbol - the chances are good that it'll work afterwards)

Thanks

 

[xanya]

I doesn't boot at all. Only a black screen. Thanks

 

[zacharias.maladroit]

I doesn't boot at all. Only a black screen. Thanks

Thanks for testing it,

this is really weird

Pulled, the kernel


edit:

Please test,

this one doesn't include the DRM restore/fix changes,

if you got a working kernel on Marshmallow, please point me to it, so that I can use its initramfs

Thanks

 

[was12]

Thanks for testing it,

this is really weird

Pulled, the kernel


edit:

Please test,

this one doesn't include the DRM restore/fix changes,

if you got a working kernel on Marshmallow, please point me to it, so that I can use its initramfs

Thanks

Not booting, only black screen.

 

[zacharias.maladroit]

Not booting, only black screen.

Thanks !

okay, that's not good,

now followed the instructions to the T - but still no dice,

that's really messed up

(it works for the Lollipop kernel, btw)