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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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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1answer
768 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
287 views

How to install custom kernel from source? - Galaxy Tab 2 10.1 (GT-P5113)

I have modified the kernel code in attempts to add a driver for USB to Ethernet. I have successfully compiled the code and am trying to install it onto my tablet. I am following the README that came ...
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1answer
580 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
63 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 Searching around reveals that the outdated modem is the source of the troubles, and that by using the ...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
59 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
161 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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1answer
176 views

Confirming the nature of a Samsung update, and declining it

I find it a little bit offensive to receive a "Software Update" message on my Galaxy Note 2 that does not disclose the nature of the update (an OS update? an app update?). software update message ...
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1answer
39 views

Replacing the system partition without touching the kernel?

So I have an android phone that I'd like to put a clean rom onto, but it looks like there aren't any good kernels ported to it yet. I've done some reading into the android architecture, and come to ...
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1answer
1k 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
159 views

How to upgrade Avatar ROM's old kernel?

I've got an S3 LTE version (GT I9305), with CyanogenMod (Avatar) installed. I've tried nightlies too, however, I'm still running Linux 3.0 (shown in about in settings). And I've seen CM screenshots ...
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1answer
69 views

LorDModUE - How to configure

I have installed Lordmodue* to under volt my android device by downloading the .zip, booting into recovery mode, browsing the sdcard and selecting the .zip file. The install was successful and under ...
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1answer
288 views

get wireless tools in Android devices?

i see this link about enable wireless tools on android. but i can't understand the way he follow to enable tools on what terminal or adb shells for the device or on linux platform !! also from ...
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0answers
3k views

How to change the display refresh rate of an android device

I am creating a custom ROM for my android device (MT6577 + ICS 4.0.4).The base ROM I'm using is the stock ROM of the device. My device's display refresh rate is pre-configured at 30Hz. Now, I want to ...
2
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0answers
229 views

How CF-Autoroot works?

How CF-autoroot Theoretically is able to root android devices ? I'm wondering on what technics it use to run su ? Do it use a custom/patched Linux kernel ? or it is based on local root exploit ? I ...
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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
116 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
280 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
186 views

What is “Additional Safe RAM” (ASRAM) and how do I enable it?

What is Additional safe RAM? How can I enable this in my custom ROM? I am using AOSP KK version Linux Android Kernel. Any reference code for ASRAM would be greatly appreciated.
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0answers
3k 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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0answers
61 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
476 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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0answers
373 views

How to find PHYS_OFFSET value for mkbootimg

As i was following instructions 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 value i ...
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0answers
188 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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0answers
670 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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0answers
286 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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0answers
22 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
53 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
90 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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0answers
36 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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0answers
34 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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0answers
462 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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0answers
125 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
18 views

BatteryManager inner workings

I recently installed linux on a Sony Xperia Neo (on SD), but the Android kernel remains under the hood. I've only changed kernel initrd to boot off the SD's Debian. The real question is: ¿What is ...
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0answers
117 views

softbricked sgh-i337 at&t with 4.4.2 ota update

I have a sgh-i337 at&t usa GPe recently updated OTA, I tried to format my rom so I could patch my kernel and threw everything at it but the kitchen sink to clear the memory but could not get it ...
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0answers
35 views

looking for a kernel hack

I have am Samsung g4 with borked code and for forensics and repair reasons, I need to extract/pull a copy of the running kernel from the /boot sector which is only accessible via Odin. I have the ...
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0answers
84 views

How to mount ubifs filesystem on android emulator?

I want to test the functionality of a custom ubifs filesystem on an android emulator (avd- Nexus 5). I have compiled and deployed a goldfish kernel(3.4) with ubifs support. But not finding the correct ...
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0answers
83 views

unable to export a gpiokey in /sys/class/gpio using Android kernel

I tried echo 36 >/sys/class/gpio/export. I am looking to read the activelow value for my gpio pin. Instead of getting gpio32 dirctory I am getting gpiochip32. All the gpio related /sys entry ...
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0answers
128 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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0answers
402 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 ...
0
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0answers
303 views

What really needs to be wiped before flashing rom or kernel?

Wiping Questions Does wiping cache wipe dalvik cache? What to do with dalvik cache in recovery when flashing when I changed the default from Dalvik to ART? When I flash kernel what partitions to ...
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0answers
183 views

Silent failure when connecting to VPN on HTC One Kitkat

I'm not sure exactly when this happens (since I normally use another phone for VPN work), but on my HTC One, updated to 4.4.2, connecting to VPN fails silently : the built-in VPN client, tested with ...
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0answers
520 views

MpDecision - cpu power consumption

I have a customize rom. With battery drain, about 3 times vannila/stock rom. with gapps, wifi off. proc/uptime show same wake time as stock/vannila for the same scenario possibilities of battery ...
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0answers
789 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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0answers
1k 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
855 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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0answers
109 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
269 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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0answers
102 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 ...