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 get setting information before booting Android devices like in BIOS?

Is there any method by which we could get the system information before booting android OS. Like wise in PC/laptop, we can get into BIOS setting before booting and get the system information. Do ...
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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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how to modify kernel from SOKP 5.1.1 trltmo to have kali nethunter support i have trltecan [closed]

I have downloaded the sokp source from git as well as the cyanoDeb source a hacker kernel from n910f variant and the kali nethunter repo I would like to add wifiusb done support with pckg injection as ...
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1answer
98 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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1answer
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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0answers
22 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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2answers
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does flashing a kernel ever wipe anything on the phone? + Doing it without CWM?

does flashing a kernel ever wipe anything on the phone? and is it ever dependent on android version? e.g. 4.22 or 4.3 I have CWM and i've seen the option to install from zip within CWM recovery. ...
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7 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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1answer
1k views

How to debug “wlan_wake kernel wakelock” on an unrooted device?

The question is as short as the title. I've a Samsung Galaxy Note 3 & it has started showing issues where the CPU remains in lowest possible frequency (250Mhz) and it doesn't go to deep sleep. I ...
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1answer
3k views

Can I flash a kernel without flashing a ROM?

Does flashing a new kernel require flashing a new ROM? Will flashing a new kernel wipe the data? Because if so, I might as well flash a new ROM. How can I see which kernels are compatible with ...
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1answer
1k views

Android early boot console over usb

I'm trying to port newer kernel versions onto my Nexus S device. Most newer kernels panic very early on in the boot process. I would like to debug this. However, since the phone has been provided to ...
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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.
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1answer
2k views

Cannot find HTC One in ADB, SD card not mounted, incorrect kernel for installed ROM, no backup

Pretty much what the title says. I have messed up big time. Because I am switching carriers, I have to switch back to the stock ROM. It is stuck at the loading screen, most likely because of a kernel ...
4
votes
1answer
416 views

How does CF-Autoroot work?

What's the theory behind how CF-autoroot is able to root android devices? I'm wondering on what techniques it used to run su? Does it use a custom/patched Linux kernel? Or it is based on local root ...
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0answers
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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0answers
277 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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1answer
30 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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1answer
516 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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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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0answers
118 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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8answers
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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. ...
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1answer
98 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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151 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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441 views

Find PHYS_OFFSET value for mkbootimg

As I was following the instructions from here, I found a problem that my /proc/config.gz does not contain CONFIG_PHYS_OFFSET setting. But my /proc/iomem contains 40000000-5bffffff : System RAM. What ...
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116 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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8 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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0answers
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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0answers
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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114 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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1answer
144 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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0answers
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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1answer
424 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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1answer
701 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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0answers
99 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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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, ...
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2answers
153 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
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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1answer
57 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 ...
0
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1answer
273 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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0answers
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
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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1answer
302 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 ...
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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
915 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 ...
2
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1answer
531 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 ...