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 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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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
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 ...
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1answer
666 views

Android 2.2 Galaxy S SGH-T959 kernel update with netfilter

I can't seem to find a kernel update for this phone that would include netfilter. Does anyone know a different way to install netfilter on this phone?
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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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1answer
102 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 ...
0
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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
147 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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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 ...
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1answer
434 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 ...
0
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1answer
83 views

Using a wifi dongle to monitor network

I have an android smart box with a built-in wifi and I want to add a dongle to the box so that I can monitor the network. I have found a similar question with somewhat vague answer(at least to me); ...
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1answer
328 views

How do you extract the boot.img from a samsung g4?

I don't image the adb command is able to access that sector of the device but for the record, when I connect, I can see the device but C:\Users\Brad2\Downloads\adbUnzip2Cdrive\adb>adb kill-server ...
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1k views

AFwall+: Why does the Kernel need an internet connection all the time?

Since I started using AFWall+ (a firewall based on iptables) on Android, I was wondering why the Linux kernel tries to connect to the internet all the time? Allthough blocking the kernel I didn't ...
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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 ...
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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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0answers
283 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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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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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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0answers
115 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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337 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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0answers
4k views

Nexus 5 takes forever and a day to charge

Since I have installed franco Kernel on my device, charging takes longer than normal (I'd guess 4-5 hours?). But today charging became extremely slow. I plugged it in overnight and this morning it ...
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95 views

What exactly happen when flashing new rom?

I searched for a while without any satisfactory answer. What exactly happen when you flash a new rom on an Android device? What the new rom contains of the Android architecture here: A rom (es: ...
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0answers
513 views

Updating Siyah Kernel to 1.9.1 on Galxy SIII i9300 ends in black screen after Siyah logo

I currently run Siyah 1.8.9 Kernel with CM 10.1 nightly (20130218), and I've tried to flash Siyah 1.9.1 with both Odin (PC) and through CM recovery. Both ways end up with a black screen after the ...
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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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206 views

Upgrading Kernel

I am somehow confused about the kernel and how it plays out. I have a couple of questions: Let's assume my device kernel reports its kernel as 3.0.8 (using uname -r). How can I figure out what ...
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794 views

Boot custom kernel via phone

I can currently boot a custom kernel (without flashing it) for test purposes by using fastboot on my computer via: cmd> fastboot boot customkernel.img Which works great. I've found great kernels ...
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307 views

Cannot turn on LG GT540 due to kernel panic

I cannot turn on my LG GT540. When I try to turn it on it displays a message which says: Linux Kernel Panic Process swapper (pid : 1 ) What does this mean? How can I fix it?
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17 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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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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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
152 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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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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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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0answers
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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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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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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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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81 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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0answers
145 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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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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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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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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247 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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0answers
924 views

Can't mount SMB folders on rooted device

Android 4.3 on a rooted Samsung galaxy note. Astro file manager can work with my network (SMB) folders but the CIFS Manager app says "mount: no such device". (Mount Manager app doesn't seem to support ...
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2k views

internal sd storage partition/mount problem

I got my nexus 7 2013 a few weeks ago. It worked great for some time until I decided to flash a kernel that claimed to add support for CIFS windows shares mount. After installing this kernel, when the ...
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0answers
1k views

What are the differences between Perseus and Adam kernels

I have a Galaxy S4 i9500 and have started looking into Android development and custom ROMS to get a feel on how they are made, what changes they provide and to what they focus on. But I always end up ...
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149 views

Touchpad buttons do not respond after flashing Kernel

I flashed a new ROM and Kernel on my Galaxy Player 5.0 USA version (YP-G70). I since then tried several kernels and the capacitive buttons (Menu/Home/Back - no physical buttons - just part of the ...
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0answers
293 views

One S reboots with new CM 3.4 Kernel

This is something that's been bugging me ever since the 3.4 kernel was released: Problem: I am getting intermittent reboots when using any ROM which is based on the 3.4 kernel. It happens totally at ...
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131 views

Sound on Power-On

I want a sound to be played when the user presses the power button, Since I am customizing Android for Visually Challenged people this feature might let them know if the tablet has actually powered on ...