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 a clean device tree to build the drivers of the msm8939/snapdragon 615

I come to you with many interrogations about qualcomm msm8939 SoC. I bought the Archos 50 diamond last year and have since been waiting for archos to make their move regarding android software ...
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0answers
27 views

Turn off camera driver in Android programmatically? [on hold]

How can I turn off camera driver in Android programmatically? According to this website, and this image, there's a camera driver inside the linux kernel. Is there a way to disable it temporarily?
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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 ...
3
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1answer
39 views

What happens if you install another phone's kernel on yours

I'm just wondering what would happen if you install a Oneplus 1 for an example on a Nexus 5, Would it cause hardware problems, Like my touch won't be recognized or something like that? And how much ...
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0answers
4 views

No zImage file after compiling finished successfully [on hold]

there is no zImage file after compiling. but "Image.gz" and "Image" two files present how to know one of this is zImage file... make zImage - Command not working Kernel: Xioami mi4i official github ...
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0answers
11 views

How to install a wireless usb adapter driveer on android

I have a Xiaomi mi4i (codename:ferrari) with sensei kernel, And I have NetHunter installed on it, So I would like to do some wireless pentesting with it but the problem is that my device won't ...
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0answers
6 views

tspdrv.h not found error in kernel compilation for android [on hold]

I am getting error while compiling Xiaomi mi4i kernel..please help.. http://forum.xda-developers.com/general/help/help-tspdrv-c-warnings-treated-error-t3424833
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1answer
27k 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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26 views

Updating Kernel using custom ROM has no effect

My device had Android 4.1.2 updated it using a custom ROM to Android 4.4.4 so that i can run apps which didn't support Jellybean. Device details(Settings-> About Device) shows Android version as 4....
2
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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....
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0answers
25 views

Backup Kernel Modules/Drivers From an Installation of Android

How can I create a backup of all the driver modules (especially those that are not part of the original kernel) from an installation of Android? Note: No, this's not an XY Problem. There's ...
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0answers
8 views

How to install custom kernels in android phone? [duplicate]

I'm using NOKIA X which has android firmware but it's performance is very weak so I want to flash custom kernel to increase its performance a little.
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1answer
69 views

How to enable “double tap to wake up” in any android device?

I've heard about the feature "double tap to wake up". How to enable this option on my device My device details: Gionee P3 Lollipop Cyanogenmod 12.1 Kernel Version 3.4.67
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1answer
43 views

Can system apps be enabled/disabled directly from the filesystem?

System apps can be disabled by using pm disable [appname] and re-enabled in the same fashion. But is there a way to accomplish the same thing by editing some file(s?) somewhere? Context: My Android-...
4
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2answers
122 views

Why does Android differ so much from Linux?

I have read all related questions here, but they don't answer my questions or are not up-to-date since Android is particularly included in Linux kernel ( > 3.x.x). Why didn't Google just take a Linux ...
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0answers
49 views

can I safely flash ls675zv4 recovery on the ls675zv5?

So end goal is to carrier unlock a phone that can't be carrier unlocked by stripping it down to nothing, rewrite my partition tables, and flash some non"boost" Sprint software. I've double checked the ...
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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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2answers
295 views

How to upgrade Android kernel version

I am running a Android device with a kernel version of 3.4.5 on a soc made by mediatek (MT6582). Now recently I found a within post with the stock untouched KitKat based kernel for MT6582. This new ...
3
votes
1answer
103 views

Can I flash a custom ROM and a separate custom kernel after?

I currently use a Galaxy S3 Neo and have recently flashed the latest Resurrection Remix ROM (android 5.1.1 based on cm 12.1). After doing this, I have experienced multiple random reboots which I found ...
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0answers
51 views

How to make selinux on Android kernel, permanently permissive?

I am new to kernels and lately i compiled one for galaxy s5 with the marshmallow opensource. Now i can change my selinux policy to permissive from terminal emulator but i want to make that permanent ...
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0answers
38 views

Custom ROM on a stock S5 with custom kernel?

A couple months back, I have installed a custom kernel on my Samsung S5 with stock Touchwiz. Now I want to flash a custom ROM on this phone and was wondering if I can do it while my kernel is not the ...
2
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0answers
56 views

Is it possible to have the system/kernel reverse x-axis touch input?

I have a galaxy S6 G920F. I have this problem with my touchscreen. The x-axis input is reversed. When I touch it on the left part it registers the touch on the right etc.. Is there a way to just ...
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1answer
31 views

Why isn't Android using kernel v4+?

While i understand that the patches needed to "support" Android operations aren't in the mainline kernel distribution, I don't understand why it isn't being ported to newer kernels. Newer kernels ...
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1answer
95 views

Device file for USB controller/joystick not created

I've got an Android 4.1.2 device (OUYA) and a PSX-USB-Adapter with two Playstation controllers attached. Attaching it to the USB port makes the device show up in dmesg: <6>[ 331.002934] usb 2-...
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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, &...
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2answers
58 views

What is the difference between .dex and .apk file?

.dex and .apk file: What are they and how do they execute ?
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31 views

Debugging aboot with KGDB (serial)

I have a Samsung Galaxy S5 Qualcomm. Rooted and unlocked. Is it possible to debug aboot (android bootloader) with KGDB (kernel debugger through serial connection)? More specifically finding an address ...
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1answer
2k 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 ...
3
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0answers
88 views

Powersave governor VS Marshmallow Doze

After searching on Google and XDA for an answer (which I didn't find), I decided to pose this as a question here. So, I guess that the majority of us know about the so-called big difference between ...
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0answers
85 views

Does Android x86 support any PCI E WiFi cards?

In the Android x86 drivers list found at https://sourceforge.net/p/android-x86/device_generic_common/ci/marshmallow-x86/tree/firmware/ It seems that the only WiFi chipsets listed were laptop WiFi ...
0
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1answer
113 views

What does the ROM files (FACTORYFS, HIDDEN, CACHE, PARAM, etc.) mean?

Flashing my Galaxy S 2 i9100 (after breaking with CyanogenMod update CM-13.x) I used the following command: sudo heimdall flash \ --FACTORYFS factoryfs.img \ --CACHE cache.img \ --HIDDEN ...
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0answers
87 views

Which one to install- 32 bit or 64 bit kernel?

Although I'd flashed my phone with new ROMs several times, I've never tried flashing the kernel before. When I searched for a custom kernel, saw 32bit and 64bit version. So how am I supposed to ...
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0answers
499 views

How to read/interpret Bluetooth HCI snoop log?

... to continue troubleshooting to my previous question: bluetooth - Nexus 6p - kernel wakelock - bluesleep - Android Enthusiasts Stack Exchange, I Enable Bluetooth HCI snoop log via (Settings -> ...
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0answers
34 views

Samsung I9300 Galaxy S 3 CPU default clock speed info Changed after installing Boeffla-Kernel

Original Clock Speed: Quad-core 1.4 GHz Cortex-A9 Samsung I9300 Galaxy S III - Full phone specifications But after installed Boeffla-Kernel it changed to Quad-core 1.6 GHz Cortex-A9 Looked up the ...
6
votes
1answer
3k 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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1answer
54 views

Can I flash another phone's ROM or Kernel on my phone? [duplicate]

Can i flash another phone's kernel or ROM on my phone and what would happen is i did so?
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1answer
1k views

Is it possible to flash a boot.img kernel with twrp?

I'm looking to flash a cm based rom's boot.img on another cm based rom for my device both based on android L 5.1 with twrp 3.0 is that possible?
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0answers
35 views

linux kernel not seen from android filesystem?

I'm reading 'embedded linux' and in chp.6 "filesystems" there is a figure that I do not understand. here it says that the 'linux kernel' is not seen from android filesystem. This give me some ...
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0answers
166 views

How to boost voltage of headphone jack from kernel?

I want to increase my headphone jack voltage from kernel . How I can find the sound folder and sound module files in android kernel ? I used viper and other softwares , they are not powerful as ...
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 ...
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0answers
47 views

Can't sideload some apps on some kernels (idlekernel, Cyanogenmod kernel)

I always wanted to use idlekernel but once I install it, the apps would disappear (also happened on Cyanogenmod kernel). Usually the apps that it doesn't want me to sideload are the ones that gets ...
0
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0answers
5k 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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265 views

Unpack and Pack the Ramdisk.img

I want to make some change to the ramdisk.img file and use that to bring up the emulator. I unpacked the ramdisk.img with the following command: gunzip -c ../ramdisk.img | cpio -i Before making any ...
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70 views

Extract boot.img from Emulator

I want to extract the boot.img from the android emulator. But I am not able to find it. I took the adb shell and read the proc/mtd file. This is content of the proc/mtd file. root@generic:/ # cat ...
0
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0answers
46 views

Galaxy S2 stuck at boot. Please help

Yesterday I flashed CM 12.1 on my Galaxy S2 gt-i9100. I rooted the device by flashing Siyah kernel via Odin. Then using cwm based siyah recovery I did the factory reset and wipe cache & dalvik and ...
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0answers
42 views

How to slow down boot on Samsung Galaxy S6 Edge

I made a custom boot animation in .qmg for my Galaxy but the system boots too rapidly, I try to slow it down. I searched in all the boot files how to do that but I did not found anything... One file ...
0
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1answer
814 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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0answers
218 views

How can I enable/add USB OTG support to my rooted and Cyanogenmod installed Huewei Honor 4x?

I have tried stickmount but did not succeed in getting otg mounted. I basically want to use wireless mouse or keyboard. I think the kernel that is installed presently does not support otg. What is the ...
0
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0answers
304 views

How do I use external web camera though USB OTG on Huawei Honor 6?

Built-in kernel does not come with USB Video support and when using sideloaded uvcvideo.ko the camera works very bad (image is distorted, the device often crash). I can barely get even single 160x120 ...
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0answers
359 views

Lenovo S6000 - Auto power on after connecting charger

I searched the web to automatically power on my lenovo tablet after connecting the charger, but all the guides are for samsung and some other brands. File /system/bin/playlpm doesn't exist in lenovo ...