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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How to run 2 shell scripts from ramdisk?

I am attempting to setup my ramdisk to fire off 2 sets of scripts. 1 is ramdisk /sbin only, the others are user allowed scripts # Check Properties on property:dp.early_init.done=1 chmod 0777 ...
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8 views

HID-MULTITOUCH for Android PIPO car pc project

I bought a PIPO X7S small computer that has Android 4.4 installed. I also purchased a 7" touch screen LCD from Chalk-Elec.com to install in my car. The problem I am having is that the Android version ...
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18 views

Run Bash Script from Terminal

I have modified a kernel's ramdisk to include a "settings" terminal run bash script. However, when I type in terminal su dp I get file is not found. dp exists in the ramdisk as /sbin/dp I've ...
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21 views

How practical the number of cores in Android

I've often wondered how practical the cores usage in Android smartphones. I'm looking from technical perspective. The articles that I've read so far claimed either more cores is good or more cores is ...
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120 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 ...
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25 views

set pr_set_dumpable value to any apk on android device

I am trying to debug sigsegv errors in different apk files and found that many apps disable dumping the logs by setting prctl(pr_set_dumpable,0). Is there any way to get around this and get the ...
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8 views

How to modify appsbl

I want to modify the appsbl partition for my device, I know the danger but I want to learn how to unpack and repack it. What method and tools can I use ?
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2answers
42 views

Why one cannot download the drivers of the Android OS like we do in our pc's

I know that i sound kind of a noob but i had this question from the day i started tweaking my phone .I know that without kernel sources it is very hard to get drivers for the phone for the sake of ...
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32 views

Devices names from android system

for several days I'm trying to find devices ( accelerometer, g-sensor etc ) names and placement of theirs drivers? I'm new to android and linux and can't figure out where can I find this info. I was ...
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308 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 ...
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31 views

What does it mean if I can't find a kernel date?

I want to root my ZTE Grand X Max and it asks if the kernel date is before or after a specific date but when I go and look is has no date by the kernel version (3.4.0). What does that mean? Or do I ...
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20 views

From where can i download Android kernels [duplicate]

I have installed androido86 on my lenovo pc and i want to download extra kernels and flash it into my pc. So where can i find them. Also how to flash them directly without using update meyhod
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119 views

What is the Despair kernal for Nexus 5 and 6?

I'm rooting my nexus 5 with android m and it asks me to install Despair Kernel. I can't find any info on what does the despair kernel actually do. Is it safe? What improvements does it have vs stock ...
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1answer
109 views

How to decompile android kernel within android itself?

How do I decompile kernel.bin of my android 4.1.2 kernel on android itself? Is there an app that can decompile kernel.bin or any methods for decompiling kernel.bin? Thank in advance!
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156 views

Activating and loading kernel modules (uinput.ko) on CM12.1 sgs3

I recently installed CyanogenMod 12.1 on my Samsung galaxy s3 i747 (cm-12.1-20150526-NIGHTLY-d2att.zip to be exact). I want to use Synergy to share my computer mouse with my phone and to do this ...
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1answer
37 views

Is it possible to compleately and utterly brick a phone with no chance of repair?

As i have recently gotten into some research about android kernel development and would like to fiddle around my phone and of course i have seen all the warnings about "bricking your device" but it ...
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120 views

How to disable SELinux completely without recompiling the kernel?

When trying to port CyanogenMod 12 to my LG L9II, I experience problems with the wireless modem (3g/2g). I believe to have traced it back to the driver/kernel module not being loaded properly due to ...
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1answer
47 views

Will updating the kernel reset the phone memory?

I updated my OnePlus One phone to the company-owned system, Oxygen OS. The battery now is miserable - it depletes within 5 hours. I am looking for a solution to fix that without wiping and ...
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9 views

RCA tablet want to watch on monitor

I have an inexpensive tablet (RCA), and I want to hook it up to a monitor with a VGA hookup, I got the adaptor, micro USB on one side and VGA on the other. Hooked it all up, and nothing....I can't ...
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35 views

Recover from incompatible kernel

I have an old Evo 4g lte that I play with (it's not my primary device) and I got my self into a tough spot. I am currently S-on, and used flashkernelgui to change to the haunted kernel. I tried ...
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16 views

how to set or know scalling driver

I am trying to modify the scheduler/governor. For the same I need to know what CPUFreq Driver or scalling driver am I configured to run. 1.Where can I find what scaling driver am I configured to ...
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116 views

Is there any kernel requirement for installing Android Lollipop?

Is there a special requirement for a newer kernel in Android Lollipop? Can I use it with 3.4 kernel?
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154 views

How do I mount an NFS share on an CM 12?

I'd like to mount an NFS share on my Android cell phone, with perhaps a mount-unmount button on the home screen. Any ideas of how to accomplish this? My /system/lib/modules is empty. It doesn't have ...
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61 views

Is “Host GPU on” on android emulator same as GPU passthrough?

I see that there's "Host GPU on" for standard Android emulator(which is incidentally qemu-based) from Google. Is it same as the hardware acceleration obtained by successful GPU-passthrough in ...
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9 views

Exact link for download bZimage and zImage file for android 5.1 on nexus 10 [duplicate]

I would like to know where I can download the only files that I need : bZimage and zImage file for android 5.1 latest version / nexus 10 tablet without that I compile everything. I need only these ...
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50 views

Franco kernel “audio boost” damage risk?

I was wondering what is the actual risk of increasing the "speaker audio boost" in Franco kernel settings? Obviously, the easy answer is to not to modify default settings to minimize risk, but I ...
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31 views

What do you mean by kernel [duplicate]

I have many times come across this word. I even know a little about it but don't know exactly what it is.
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2answers
154 views

Stuck at boot screen after adding multi-user account

I attempted to add a multi-user account to my device, and after it automatically restarted, it has been stuck in the boot loading sequence. I tried un plugging it and running over night, it simply ran ...
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1answer
280 views

Enable framebuffer console in Android kernel source

Is it possible to somehow enable the framebuffer console in android kernel sources from samsung, to see kernel messages instead of just the bootlogo?
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1k views

Swap to Increase RAM but kernel issue

I have Micromax Canvas Doodle A111 phone with Android v4.1.2. My phone has 512 MB RAM by default. So whenever I try installing some new apps my phone becomes really slow so I decided to increase RAM ...
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1answer
58 views

Nexus 4 rooted, stuck at CM10 for various reasons - HELP!

I've been using a Nexus 4 for almost 2 years now. I rooted it to get LTE connection. Downgraded radio and all... it was beyond my level of expertise but I managed to get LTE and CM10, along with a ...
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1answer
433 views

Powered USB hub not charging phone. Kernel options?

I got a powered USB 2.0 hub (ET-UP900). As power source I am using the phones charger. But if I connect the hub with my phone (SM-C115) it does not charge. If I connect the charger directly it works. ...
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67 views

Is android kernel same for all devices [closed]

I m newbie to building roms. I have Hiawei G630 device with 4.3 kernel. My question is would it work if I use Samsung or other Huawei kernel. Sorry form my bad english
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92 views

USB to Ethernet Device driver does not work in android

On Ubuntu Linux, i cross-compiled USb to Ethernet driver from kernel source tree in drivers/net/usb/smsc75xx.c for android kernel. The cross-compilation worked fine and i was able to insert the ...
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1answer
927 views

Screen flickering galaxy s3

I noticed that my galaxy s3 sometimes show flickering on display when I am for example closing apps. I disabled HW overlays but it didn't help. I read that it can cause battery. My battery is fairly ...
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1answer
544 views

usb to ethernet driver installation

I am following this thread to enable my samsung android phone to do usb to ethernet communication http://forum.xda-developers.com/showthread.php?t=2039886 I copied the smsc75xx.ko generated by the ...
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1answer
399 views

how to find out secret service codes for android

I have a Spice Dream Uno (Android One) and none of the secret service codes I found on the internet (like ##197328640## and ##7378423##) work on it. Do I have to root my phone in order for these to ...
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83 views

Analyze backtrace of Kernel panic / find cause

I have this problem on my Samsung Galaxy Note 2 LTE with random reboots and kind of clean restarts in the kernel logs (no oops / panic, even though some usb errors) and now I got a kernel panic in the ...
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146 views

Seek Thermal camera on Galaxy Tab 2 10.1

Here is my problem: I upgraded my Galaxy Tab 2 10.1 P5113 to Kitkat 4.4.4 That was a requirement for installing the Seek Thermal Camera that I am having trouble with The other requirement that ...
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1answer
522 views

bootloops / random restarts on Note 2 LTE, worse with SIM inserted? analyze kernel log “last_kmsg”?

when I started using my Note 2 LTE with an LTE sim card (tested LTE long ago without problems), running CM11 nightly from approx. 1 month ago, it started to reboot randomly. But it also happened with ...
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17 views

What changes does rooting make on the system? [duplicate]

I wanted to know what changes implies in the system when you root an android device. I want to know how to have android rooted on my beaglebone black from source.
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1answer
1k views

Can one determine the kernel version of a Samsung device from the Android version?

Basically, does an Android version map to a specific kernel version on Samsung devices? For example, can I assume that Samsung devices running Android 4.4.2 will have kernel version 3.4.0 (or some ...
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100 views

Automatic turning on an android

i have found a solution of the problem of automatic turning on an android (not samsung), when battery is charging for this i've inserting the line /system/bin/reboot in the file /system/bin/ipod ...
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1answer
714 views

What does “se.infra@SEP-138#1” mean on kernel version?

I have broken my mobile, so I want to download the original version back. The original version is: Android version: 4.1.2 Kernel version: 3.0.31-638230 se.infra@SEP138#1 On kernel version, what ...
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73 views

How to bundle modules with a kernel for recovery installation

I have compiled a custom Kernel for my HTC Desire 200 unit from htc's source. After my kernel is compiled i get a zImage file. I then use Android Image Kitchen, to take a standard boot.img file and ...
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338 views

Any Fast Charge Kernel for Nexus 7 grouper? Franco Kernel?

I have the latest Franco kernel on my N7 2012 WiFi, normally it should be able to fast charge but I cant? Anyone have a solution or another kernel supporting fast charge for my device? This wont ...
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3k views

Extracting code from lk.bin (little kernel binary file) & preloader.bin - MTK6572, mediatek

This is a changed question from the original, since nobody seemed to have answered, found most of the answer on my own. As stated before, wanted to fix my userdata and fat area blocks after hacking ...
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249 views

dumpsys meminfo: differences between ICS and KitKat?

I noticed differences when I compare the meminfo of old Android and newer ones but I can't find documentation about it. Using the same apk, Graphics and GL only show up on KitKat and the usage on ...
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1answer
443 views

Trying to replace a modem but encountering errors

I've been having connectivity problems on my i9505 LTE on every ROM I've tried since August. Searching around reveals that the outdated modem is the source of the troubles, and that by using the ...
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1answer
159 views

What does it mean by letter 'g' in a kernel version string such as 3.4.0-gd59db4e?

In my Nexus 5 device, I can see the kernel version as follows: 3.4.0-gd59db4e I know 3.4.0 is the linux kernel version number, and d59db4e is short of a commit sha1. here is another example. I just ...