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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123
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9answers
48k 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. ...
10
votes
1answer
26k 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.
64
votes
1answer
5k 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)?
14
votes
6answers
11k 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 ...
10
votes
2answers
5k 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
13k 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 ...
4
votes
5answers
38k 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, &...
3
votes
1answer
3k views

How can I backup and restore Cyanogenmod 12.1 rom installed on my Samsung Galaxy 2 i9100?

Cyanogenmod(12.1)'s recovery has no backup or restore option. As I read in the answer of a previous post, CyanogenMod recovery is basic, so we should flash another recovery. The easiest way would be ...
6
votes
2answers
1k 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
1answer
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 similar....
7
votes
1answer
7k 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, ...
4
votes
1answer
22k views

How can I update the Linux kernel of my Android device?

I am using Sony Xperia E Dual with the kernel that identifies as 3.0.8-perf administrator@ubuntu-scm01 #1 and now I want to update it to the latest and the best one. Please help me understand it can ...
2
votes
1answer
5k views

Why is EXT3 not supported on Android?

Android uses the Linux kernel instead of some "Android kernel", so why is ext3 not supported on Android 2.3?
1
vote
0answers
2k 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
0answers
59 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
2k 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 ...
0
votes
1answer
572 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 ...