The kernel is a central component of most computer operating systems. It acts as bridge between applications and the hardware and also manages the systems's resources.

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105
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8answers
39k views

What is the difference between: Rooting, Jailbreak, ROM, Mod, etc.?

What is the difference between: Unlocking the bootloader (prerequisite for doing many, though not all, other things below) Rooting Jailbreaking ROM NAND and Nandroid Operating System Mod (e.g. ...
60
votes
1answer
4k views

What linux distribution is Android based on?

Did Google use some existing distribution (Debian, Red Hat, etc.) to create Android, or did they use the bare essentials (kernel, file system and some mandatory files)?
2
votes
1answer
13k views

Which Android runs which Linux kernel?

Is there a list of which kernel version comes in each Android AOSP version? Or lets say, which version /proc/version would spit out.
10
votes
6answers
9k views

Why are there so many different Android kernels (technical answer please)

Isn't Android a common kernel that is used across all devices? For example CentOS will install on Dell, HP, and a variety of other hardware. Sure there are different modules but it's still CentOS ...
7
votes
2answers
3k views

What is the difference between the Linux Kernel and the Android Kernel?

What are the modifications done in linux kernel to make it an android kernel ? By this question I mean what are the differences between linux kernel and android kernel ?
3
votes
3answers
10k views

Get root or re-install the OS without a USB cable?

Usually, the guides for getting root or re-installing the OS on an Android device (I have a Samsung Galaxy S, which I'm mostly inetersted about) tell to flash the device from another computer through ...
3
votes
5answers
32k views

How to find out if my Device's Kernel has Loop Device Support

I would assume most all of you know why I am asking this, but for those who don't, Loop Device Support of a Kernel on an Android device is utilized to mount a Linux Distro IMG file (Ubuntu or Debian, ...
7
votes
1answer
28k views

How to install kernel module for android?

I currently have a custom kernel and ROM installed on my android device. The kernel I'm using comes with a separate download with kernel modules that you are to install yourself if you want. However ...
6
votes
2answers
909 views

Given that every application runs as a separate user, what happens when you want to add a new user account?

According to this, every application in Android runs as a separate kernel-level user, with a unique user ID and group ID. So, what happens under the hood when you add a new user (e.g. to your shared ...
2
votes
0answers
2k views

Does Cyanogenmod Kernel support loop devices?

Since I am failing to mount a Nandroid image and since I have read that the kernel needs to support loop devices for that I need to know if anybody has managed to mount a loop device on CM7 or ...
7
votes
1answer
6k views

l2_hsic prevents my device from Deep Sleep. How to fix it?

I have installed BetterBatteryStats and CPU SPY, because I noticed that I had a faster than normal battery consumption when the tab was left alone. I made a 30 mins test Wifi OFF, Flight Mode On, ...
2
votes
1answer
3k views

How do I find the kernel config for my ROM?

I'm very happy with CM11 ported to my phone(Samsung Galaxy Ace 2). One day I bought Bluetooth keyboard. When I tried to connect it, it paired and... wat? No connection!? I thought that this ROM has ...
1
vote
0answers
290 views

Why does the Kernel and Android System/Android OS drain my battery?

3 hours since unplugging my phone, and at light usage it's at 61%. It is the kind of problem I've had with my previous phone, and I have with my current phone, often starting a few months in and ...
1
vote
1answer
1k views

What is the default Kernel Governor in Stock Samsung Galaxy Mega Android ROM?

I have rooted my phone recently and just installed ROM Toolbox which has several Governors available. It is using OnDemand by default, but I switched to Interactive. I just need to be as close to ...
1
vote
0answers
54 views

What are the technical differences between bootloader, recovery, kernel and ROM? [duplicate]

Possible Duplicate: What is the difference between: Rooting, Jailbreak, ROM, Mod, etc.? I'd love a reference (or an explanation if anyone has the time) on what characterizes these different ...
1
vote
1answer
1k views

Flashing an official Samsung galaxy tab kernel

I have a Galaxy Tab 10.1 (GT-P7510) with Android 3.2 and kernel 2.6.36.3 installed. I'm building a customized kernel using Samsung's official kernel source code for research purposes. I do not need to ...
0
votes
1answer
303 views

Where is the current_now measurement generated

If you go into the adb shell, you can check what the amount of current the battery is discharging by using the following command cat /sys/class/power_supply/battery/current_now When the current is ...