i'm thinking of building a new kernel for lineage os - Android Q&A, Help & Troubleshooting

my device is teclast x80 power B2N4 (cherry trail cpu)
its stock kernel supports x86
but, i want to use x86_64 kernel to improve performance...
where can i get the kernel source that i need
and.....
as kernel architecture is different, when flushing the kernel, I know it will not boot after flashing. will I have to flash a kernel, ROM, and recovery without rebooting it in fastboot?

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Extract\Dump Rom & Kernel for tablet.

Hi one of my friend has 1 china made tablet which has no clue of its stock ROM over the internet
That is an Allwinner A13 Tablet with Android 4.0.4 into it
We are trying to make a custom ROM for it & for that we need to DUMP or Extract everything from the tablet
So if during the time of testing if the tablet soft-bricks we can re-write ROM & Kernel to it
And also we are trying to modify the kernel to make OC available with more CPU governor
We managed to flash the CWM Recovery into it so we can backup the ROM with it but it cannot backup the kernel
So is there anything we can use to DUMP the ROM & Kernel & make an .img to flash the tablet by burning it to SD Card?
Thanks!
Manthan Bhasvar.
bump

Questions about the kernels techpad c981

Hi I have a dual TechPad C981, this has the 3.3.0 kernel weidi @ brn-weidi # 3 and andoid 4.2.2, I want to install AOSP kitkat KK, I am new to android and I have several questions.
How do I know if my tablet supports kernel KK?
if not
* Can I compile KK with stock kernel?
or
How to compile the driver modules?
and
I searched the sources and can not find them, I have just the firmware which is a img
Can I extract the kernel and drivers from the img or the device?
and finally
to install the firmware 1.6 installed with Phoenix to record the firmware.
What if my rom does not work, thus I reinstall the original firmware with Phoenix?
I've been using linux long time, i know java, c, c #
thanks for reading

Using a pre-built MTK6589/8389 kernel in a custom (Lollipop) ROM

I've got an old Lenovo S6000 which, like every other Mediatek device, has incomplete source code for the drivers and the kernel. As a small project, I would like to try and get Android Lollipop up and running to an extent where:
the system boots to the GUI;
the Wi-Fi works;
and the touchscreen works.
just to start off.
The device currently is rooted, with ClockworkMod recovery installed, and I can create Android back-ups of the system. Could I potentially take the kernel and the proprietary blobs and build them in to a CyanogenMod 12 update? Or would the kernel have to be patched to support the new features in Lollipop (the current OS running on the device is Android 4.2.2, and there have been no other working attempts to create a custom ROM for the device)?
Thanks,
George
Sir I want to know Mediatek 6589 3.4.5 kernel can be used with any custom lollipop ROM or it need development for doing that? what can be done to update device with latest android ROM, what is required for developing ROM and kernel? Do all Mediatek 6589 chipsets share same kernel? because sony has released the source code for 3.4.5 kernel but I don't know how to use it for development of new ROM with latest android, how cyanogen do that?
http://developer.sonymobile.com/dow...es/open-source-archive-for-build-16-0-a-0-36/
this is the link to xperia c 3.4.5 kernel source code. please check it sir.

[MT6735]Custom Rom

currently do not have any custom ROM for my device. Did I wonder if installed custom ROM based processor? mt6735 processor.
You can Flash another Custom ROM via custom recovery as long as the ROM you want to try (first you need to port ir to your device) if for the dame chipset and same Kernel version

Bad performance with custom kernel

Hello, I have compiled a custom kernel from LineageOS sources for my device (Galaxy A5 2017). My device is running crDroid 5.8, the kernel is build from the same sources as my custom kernel.
I only added a governor to my kernel and flashed the boot.img in TWRP.
But the problem is that the performance is really bad (phone is laggy, apps need 10 secs+ to start), even when NOT using the added governor.
Restoring the stock boot.img didnt fix the problem.
Any ideas?

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