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[Q] noobish question here: What is a Kernel?

i had read a couple of posts here and there on how good faux kernel is, on "how smooth it runs or that it gets good battery life" but my question is, what is a kernel? is it only to over/under clock or is it something more that i am missing? what do i need to run it, (requirements you may say) ? i am on weapon g2x 3.0

In a nutshell (from the way i've always understood it) a kernel is basically the bridge of communication between your applications and the phone's hardware. There are no "requirements" to run it on your phone because it's already on there. Without it, you're smartphone would not be functional. These other kernels you hear about are custom made kernels. Kernels can be replaced by flashing one on top of the other (just like a ROM).
For more reading: Kernel

Even more basic understanding. Software for your hardware. If you are a car guy...ECU?

matrix0886 said:
In a nutshell (from the way i've always understood it) a kernel is basically the bridge of communication between your applications and the phone's hardware. There are no "requirements" to run it on your phone because it's already on there. Without it, you're smartphone would not be functional. These other kernels you hear about are custom made kernels. Kernels can be replaced by flashing one on top of the other (just like a ROM).
For more reading: Kernel
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fortunejr said:
Even more basic understanding. Software for your hardware. If you are a car guy...ECU?
Click to expand...
Click to collapse
Thanks for the answer guys

So, can you mix kernels with custom roms or do they work as a package? If someone comes out with a kernel with a particular feature or fix, can I flash that on my phone to enhance or will it not be compatible with my rom?
thanks

shanipaqman said:
So, can you mix kernels with custom roms or do they work as a package? If someone comes out with a kernel with a particular feature or fix, can I flash that on my phone to enhance or will it not be compatible with my rom?
thanks
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There are kernels designed for certain ROMs. We have kernels for CM7 & AOSP Based ROMs, and kernels for 2.3.3/2.2.2 based ROMs.

IMO Fauxs kernels are the best
Sent from my LG-P999 using XDA App

shanipaqman said:
So, can you mix kernels with custom roms or do they work as a package? If someone comes out with a kernel with a particular feature or fix, can I flash that on my phone to enhance or will it not be compatible with my rom?
thanks
Click to expand...
Click to collapse
Yes you can. The kernel is sort of like the engine of your car. There's certain kernels that only work with CM7, or stock, but they'll usually say in the description.

[Overclocking] [ICS/GNexus] GPU & Processor & RAM - Kernel Q and A

So I recently rooted my Galaxy Nexus and other than using WidgetLocker I haven't done anything to my phone to take advantage of my root and SU privileges.
This is my first phone that I have done this too so this is all a major learning curve which brings me to my question(s):
(1) Can the phones memory be over locked?
[If yes....] What are the factory Memory Times and what is a safe level to overclock them to - and How?
(2) What is the factory setting for the processor and what is a safe and efficient overclocked setting?
Is the Highest (but again safe and efficient) level a noticeable change?
(3) Overclocking the GPU can reach a maximum setting of 512Mhz (correct?)
What is the default setting for the GPU and is overclocking the GPU to the highest (but "safest" & efficient) level noticeable and worth the trouble?
(4) How do I overclock my phone?
I know that (probably) a kernel replacement is going to be the answer to this question but I was wondering if maybe there is a script I could run in recovery console or terminal, whatever...instead of replacing the entire kernel.
If the kernel is the only way, does this effect future ICS system updates?
What is the best (most stable, most features, best for overclocking) kernel for ICS/GalaxyNexus? - I dont know poop about kernels.
(4a) with the kernel loaded, what apps do I need to snatch from the market to actually overclock my Galaxy Nexus? Try to recommend free ones please =P
(5) Since I am replacing the Kernel, should I dive in 100% and flash a ROM too?
Yes?: what is the best (very very stable, fast, efficient, tweakable) ROM out there for GNexus?
do roms do anything to assist in the overclocking process?
The only reason I would consider a ROM too is because I want Wifi/USB Tethering, Facebook contact syncing, and a few other things.. but only if there are overclocking tools too!
Does flashing a ROM eliminate myself from ICS updates(pretty sure the answer is yes)??
(6) I am currently on a stock kernel and "rom" (if u couldn't tell...) but I am rooted and using Launcher Pro (free version) and I am happy with it but out of the other launchers which is the best (fastest, easy to use, customisable)?
If I flash a custom ROM will a custom launcher be necessary or do they cone with tweaked launchers?
I had other questions but I can't think of it right now, I'll update the OP and thread if I think of anymore. Thank you so much community members for taking time to answer these questions!!!
Sent from my Galaxy Nexus using XDA App

ksaul said:
(1) Can the phones memory be over locked?
[If yes....] What are the factory Memory Times and what is a safe level to overclock them to - and How?
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No, it can't.
(2) What is the factory setting for the processor and what is a safe and efficient overclocked setting?
Is the Highest (but again safe and efficient) level a noticeable change?
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1200 MHz is stock, 1350-1400 MHz is the highest you can get at the moment, as stability is an issue.
(3) Overclocking the GPU can reach a maximum setting of 512Mhz (correct?)
What is the default setting for the GPU and is overclocking the GPU to the highest (but "safest" & efficient) level noticeable and worth the trouble?
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Click to collapse
307MHz is stock (underclocked), 387MHz I believe is it's nominal speed, and is billed as 'overclocked' here on XDA.
(4) How do I overclock my phone?
I know that (probably) a kernel replacement is going to be the answer to this question but I was wondering if maybe there is a script I could run in recovery console or terminal, whatever...instead of replacing the entire kernel.
If the kernel is the only way, does this effect future ICS system updates?
What is the best (most stable, most features, best for overclocking) kernel for ICS/GalaxyNexus? - I dont know poop about kernels.
Click to expand...
Click to collapse
You need to flash a kernel using CWM Recovery. The kernel will be rewritten every time you flash a new ROM with that ROMs kernel, if you like a specific kernel you can reflash after installing a ROM, I use Franco Kernel which is by far the most popular. Once you flash a custom ROM you won't bother with ICS system updates, custom are bleeding edge with custom tweaks and months and months earlier than OTA releases.
(4a) with the kernel loaded, what apps do I need to snatch from the market to actually overclock my Galaxy Nexus? Try to recommend free ones please =P
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Click to collapse
SetCPU is by far the best, don't be a cheapskate shell out the $2 for it. AOKP ROM has one built in, but I still use SetCPU.
(5) Since I am replacing the Kernel, should I dive in 100% and flash a ROM too?
Yes?: what is the best (very very stable, fast, efficient, tweakable) ROM out there for GNexus?
do roms do anything to assist in the overclocking process?
The only reason I would consider a ROM too is because I want Wifi/USB Tethering, Facebook contact syncing, and a few other things.. but only if there are overclocking tools too!
Does flashing a ROM eliminate myself from ICS updates(pretty sure the answer is yes)??
Click to expand...
Click to collapse
Flashing a custom ROM will stop you being able to recieve OTA's, yes. But like I said earlier, they are ****. Custom ROMs are far, far better, so just keep up to date with your ROMs releases and you will always have a ROM with more features that stock OTAs. Most ROMS come with overclocked kernels, most have optimized kernels also, AOKP even has a built in overclocking program in the settings menu, which might appeal to you.
(6) I am currently on a stock kernel and "rom" (if u couldn't tell...) but I am rooted and using Launcher Pro (free version) and I am happy with it but out of the other launchers which is the best (fastest, easy to use, customisable)?
If I flash a custom ROM will a custom launcher be necessary or do they cone with tweaked launchers?
Click to expand...
Click to collapse
I don't know about other ROMs but AOKP comes with a custom launcher called Nova Launcher, it's essentially the stock launcher with tweaks.

wow thank you so much for your reply... i stumbled upon AOKP on droidforums before reading your reply and am actually about to flash it now - thank you for this very detailed response!!

No problem my man, there is actually a good few stable 1500MHz kernels out now and the GPU can be overclocked to 512MHz if you really want to kill your battery.

Insecure kernel XWKK2?

I'm looking for an insecure XWKK2 kernel, and to be honest I've lost faith in my quest. Is there any possibility to use any other kernel to flash with? And I'm not interested in CFRoot, it just won't work with my phone for some reason,
Mustaron

i am also looking for this insecure kernel I9100XWKK2

i'm needing one too

You could look in the development forum for i9100 and pick one of the custom kernels that are flashable with Odin. Make sure your device is compatible with the kernel though.
I like siyah personally.
Sent from my GT-I9100 using XDA App

aceofclubs said:
You could look in the development forum for i9100 and pick one of the custom kernels that are flashable with Odin. Make sure your device is compatible with the kernel though.
I like siyah personally.
Sent from my GT-I9100 using XDA App
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So, to root, you don't have to use the xwkk2 kernel? I tried searching for a sollution, but I can't find one. I know I'm a noob, but I guess everybody was once

?
does it mather what type of custom rom you take
for example i have XWKK2 so can i install any rom i like ?
my phone is already rooted
i want a rom that support Jkay

michaelruny said:
does it mather what type of custom rom you take
for example i have XWKK2 so can i install any rom i like ?
my phone is already rooted
i want a rom that support Jkay
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I already found the solution to my problem and installed a new rom.with succes
Sent from my GT-I9100 using XDA Premium HD app

Need help Stuck on boot logo LG G2

any body have try PA 4.2 Beta 4 and combine with furnace kernel, im having trouble here after flashing furnace kernel i stuck at lg logo does anyone know how to solve this? i really like this kernel

Goodsdept said:
any body have try PA 4.2 Beta 4 and combine with furnace kernel, im having trouble here after flashing furnace kernel i stuck at lg logo does anyone know how to solve this? i really like this kernel
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PA 4.2 is an Android 4.4 (kitkat) ROM. Furnace Kernel only works with JellyBean based roms. This combo will not work no matter what you do.
If you use a KitKat ROM, you need to use a KitKat kernel. If you want a JellyBean Kernel (ie Furnace Kernel), look for a JellyBean ROM.

do you have any sugestion custom kernel? Im having problem using stock PA kernel

Goodsdept said:
do you have any sugestion custom kernel? Im having problem using stock PA kernel
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What problems are you having with the stock PA kernel? Are you sure they are not ROM or APK bugs?
I usually stick with stock kernels and report to the dev issues I'm having. Often any issues I am having are either common issues and somebody found a solution (like using an older version of a particular APK) or are problems that are new to me (based on my config like using a govenor that is buggy with that particular ROM).
The biggest issues I have seen with things are often with the init.d scripts OR with using conflicting software (2 different CPU controllers for example).
If you are having FC's, I'd post a logcat in the forum thread along with any relevant data. If it just seems buggy, post the bugs in the forum thread along with steps to reproduce it. If it is a kitkat rom you are running, are you using DALVIK or ART? I know ART is still in testing and does not play nice with some things like xposed framework.

About incorrect kernel flashing and camera bug

I have this question about kernel flashing, i tried google but no luck so xda is my last resort, anyway i want to flash a overclocked kernel of another rom, if i do so will it hard brick my device, as i cant try it not until i know that i can boot back into recovery even with incorrect kernel, i really hope someone can answer this. And oh yes i need to ask another question about camera not focusing correctly,i mean it focuses correctly then again becomes blur to take a shot, but when i do video calling in whatsapp, it works kinda ok that what my partner said but idk i have Grand 2 ms013g. Thnx

max gokue said:
I have this question about kernel flashing, i tried google but no luck so xda is my last resort, anyway i want to flash a overclocked kernel of another rom, if i do so will it hard brick my device, as i cant try it not until i know that i can boot back into recovery even with incorrect kernel, i really hope someone can answer this. And oh yes i need to ask another question about camera not focusing correctly,i mean it focuses correctly then again becomes blur to take a shot, but when i do video calling in whatsapp, it works kinda ok that what my partner said but idk i have Grand 2 ms013g. Thnx
Click to expand...
Click to collapse
It is impossible to answer that if we don't know what kernel you're trying to flash and what specific device model number you're trying to flash it on or what ROM you're using(i.e. custom ROM or Stock ROM, if custom ROM, what ROM?)
If the kernel was not made for your device, you can't use it. If it was made for your device, then it is a question of whether the kernel is compatible with the ROM you're using.
Sent from my SM-S767VL using Tapatalk

Ummm
This is the first time that someone replied to my post on xda i m lucky ig, and thnx a lot for the precious reply, so i have aokp 7.1.2 custom rom, and i think it has stock kernel, i want to flash deds kernel, infected kernel, and some others i need to check, which are compatible with my device but not this rom, it say touchwiz, 5.x, 6.x. and my device is Samsung Grand 2 G7102 with msm8226 i want to install overclock kernel as i m more into gamings even tho i still have some good gaming but not that good those kernel support overclocking upto 1.6ghz, if u need more info i m willing to give it to u.

Droidriven said:
It is impossible to answer that if we don't know what kernel you're trying to flash and what specific device model number you're trying to flash it on or what ROM you're using(i.e. custom ROM or Stock ROM, if custom ROM, what ROM?)
If the kernel was not made for your device, you can't use it. If it was made for your device, then it is a question of whether the kernel is compatible with the ROM you're using.
Sent from my SM-S767VL using Tapatalk
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I mistakenly replied to this thread/post other than replying to ur comment, sorry i m newbie

max gokue said:
I mistakenly replied to this thread/post other than replying to ur comment, sorry i m newbie
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Click to collapse
TouchWIz stuff is stock only, you can't mix TouchWiz stuff with custom ROMs such as AOSP, AOKP, LOS, etc.
Touchwiz can use modified stock kernels that have overclock support built in but you can't use stock kernel or modified stock kernels with custom ROMs.
Likewise, you can't use stock with custom kernels either, stock can only use stock and modified stock kernel.
Sent from my SM-S767VL using Tapatalk

Droidriven said:
TouchWIz stuff is stock only, you can't mix TouchWiz stuff with custom ROMs such as AOSP, AOKP, LOS, etc.
Touchwiz can use modified stock kernels that have overclock support built in but you can't use stock kernel or modified stock kernels with custom ROMs.
Likewise, you can't use stock with custom kernels either, stock can only use stock and modified stock kernel.
Sent from my SM-S767VL using Tapatalk
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Ok so if i do flash one custom kernel what could happen if its not supported? Hard brick? Will i still be able to go to recovery?