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Questions tagged [kernel]

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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Can we flash any Android version which suits a particular kernel in any Android

Since we mostly talk about compatibility of any ROM with its kernel and as any ROM decide what android version we are using so can we do flash a kernel and corresponding compatible ROM to any old ...
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Does android uses X11?

In mosg of Gnu/Linux Distribution , X11 or Wayland in newer is used as display server. Since android also uses linux kernel, is it alsi using X11 or something similar ?? If not then how android ...
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bind mount / symlink - keep destination “tree” on removal of source?

I'm trying to accomplish something fairly odd, so bear with me. I've added an external SD card to my old Droid Mini (basically just for an experiment to see whether or not I could expand the storage ...
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1answer
200 views

Backup/dump kernel image (and full ROM) without root for Mediatek Devices

I would like to pull the boot image of my device Pipo N7. I don't have root. I found the following link: Backup/dump kernel image without root or twrp/cwm` But when I try to find /dev -name 'by-name'...
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how can I disable Android's touchscreen permanently by editing kernel or using any app?

I have Samsung Galaxy tab s and I want to disable its touchscreen permanently. I have found out touchscreen driver of my device .. is there any way I can edit and disable touchscreen permanently? Or ...
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Are android system kernel panic logs available in TWRP recovery?

I am trying to debug a rom I built but can't seem to find the any kernel panic or system logs in TWRP recovery. Is it possible to create logs for a failed boot to see whats going wrong? I am still ...
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43 views

Permission Denied on injected /sbin Scripts

I have an android device.. and Honor View 10... L04 version (US). I have a set of tweaks I am injecting into my kernels ramdisk, that all fire off without issue when I adb shell in and manually run ...
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1answer
120 views

Possible to patch the Android kernel with root?

Basically there's a boot rom exploit on Tegra X1 chips, specifically the Nintendo Switch that allows you send payloads while it is in Recovery Mode and basically run unsigned code (homebrew, custom ...
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Booting Linux on Android Tablet

I have a tablet with a kernel source and i want to boot debian or Arch Linux on it. I researched a lot and find nothing about it or some incompleted articles. I heard i can alter the initramfs but i ...
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Samsung T700 (klimtwifi) WiFi Trouble With ac Routers (RR 5.6.9 MM)

Samsung T700 (klimtwifi) WiFi Trouble With ac Routers (RR 5.6.9 MM) I have a problem with my tablet's wifi and my new router. For some reason RR 6.0.1, ResurrectionRemix-M-v5.6.9-20160602-...
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Nexus 5 accelerometer events

In other phones, I see the accelerometer under /dev/input/event<x> and it generates events like EV_ABS ABS_Y ffffffe0 EV_SYN SYN_REPORT 00000000 ...
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Remove or adjust AMOLED PWM backlight level on msm845

So, I have recently bought Oneplus 6 phone with Snapdragon 845. I like almost everything about this phone, except the fact that pretty low-frequency PWM backlight kicks in under some brighteness ...
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Linux kernel 4.4 Android devices

I am trying to find out what all devices are running linux kernel 4.4+ and having a hard time finding all. Till now I could only find Sony Xperia devices running kernel 4.4. The reason I was trying ...
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Why is my Android kernel using up too much space?

I have a Lenovo Vibe K5 Note (4GB) running Android 6.0. My device is not rooted and the excess memory usage is kind of lagging each and every operation in my phone. Why is my Android kernel using up ...
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111 views

Android CDC ACM device has no output

I use a device that is connected to Galaxy phones via USB using CDC ACM driver. Since Galaxy S3 (I9300) and Galaxy S5 (G900H) doesn't have that driver in the default kernel, I built my own kernel/...
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181 views

Can I overclock my device without flashing a custom kernel?

I have an device (Yuntab K107) with Android 5.1 and a quad-core 1.3Ghz processor (it supports one-click root). Recently, I have wanted to overclock it to 1.4Ghz (it should be safe because it does not ...
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Cryptic toast notification appears after tapping Kernel version 8 times

On my Android, I tried to see if there were any other things that could be found by tapping in the "About device" tabs (that don't link to something by a single tap). I noticed that when tapping the ...
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1answer
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How can I disable the GPS functionality from my android phone at the kernel level?

How can I disable the GPS functionality from my android phone at the kernel level? I know this requires (though not sure) disabling either device drivers for GPS or kernel module BUT how to do it ...
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1answer
499 views

How do I get a version of Android with linux kernel >= 3.18 on a Nexus 5?

According to this post Android 7.1 has kernel 4.1.1 and Android 6.0 has kernel 3.18.10. I installed Android 6.0 on a Nexus 5 (using the latest google image) and ended up with kernel 3.4. Then I ...
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Changing the kernel driver for microphone on Note 8.0 tablet, SGH-I467M, GT-N5120

All Great Minds, I have a Samsung SGH-I467M Note 8.0 tablet. This is the Canadian version. The international version is GT-N5120. The latest stock firmware from Samsung is still 4.4.2. LineageOS ...
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1answer
78 views

Build kernel module on locked bootloader [closed]

I have an device with locked bootloader, but i have the kernel source and prebuilt kernel. I have two questions: Do i need the kernel to be built to get a module working? Can i get an module to be ...
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Write protection of loop device // Read-Only Filesystem

After spending days on that topic I am in need of additional ideas ;) Facts: MTK6757 / Android 7 / Kernel 4.4.15 / FS EXT4 (No F2FS) / Working Root I have a fresh and clean 64MB EXT4 .IMG File in /...
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1answer
377 views

Is android kernel a microkernel or a monolithic kernel?

Since the android kernel is derived from the mainstream Linux kernel, with additional drivers for a specific android device. is it safe to say that the Android kernel is also a monolithic kernel? But ...
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How to change Android's kernel verson? [duplicate]

I have an Android and its kernel verson is 3.4.5 and it chipset is mt6572. Now you tell me how can i change or update my Android's kernel from 3.4.5 to 3.4.6 0r 3.5?
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1answer
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“Could not do normal boot invalid kernel length”

My G935F shows "Could not do normal boot invalid kernel length" when attempting to boot into TWRP or turn on the device normally. The only thing I can access is ODIN. This happened after attempting to ...
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Music player randomly stops

While listening to music on LG K4 K120E, Android version 5.1.1 with kernel 3.10.65, music player stops unexpectedly, without any error message. I have tried several applications and it is always the ...
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1answer
120 views

How to add support to an external monitor in Android?

My Samsung Dex (with Android 7 in a Samsung Galaxy S8 phone) won't work with my LG 23MT75D-PU monitor. I think because the Android driver are not ready to talk with this monitor yet. I will want to ...
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363 views

My kernel version is 'unavailable' how i can fix this?

but when i check in /proc/version it shows the correct kernel version also, when using an app like device info HW it shows the correct version. i'd be grateful if someone would give me a sense about ...
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kernel panic || Pantech burst || Cyanogenmod

I have a pantech burst P9070 phone with the following cyanogenmod custom ROM Click image for larger version For the past few days, my phone seems to be restarting automatically, shuts down by itself ...
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2answers
286 views

How to brick android

I'm currently trying to hard-brick my phone. Yes, you read right. The reason doesn't really matter. I tried flashing wrong recovery/ROM but no success. I could easily recover the smartphone afterwards ...
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login error into POS software

I have downloaded Yalp Store successfully. It seems to be working, but I'm unable to log in into one of the software I downloaded. Do you know what this means... "Not allowed to start service intent [...
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1answer
495 views

Unfortunately, Google Play services has stopped?

I recently bough an Android computer from China. However, it does not have Google Play Store on it. I've tried downloading and installing the Google Play APK. The installation appears to be successful,...
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177 views

As of current versions, would any of these setups pass safetynet checks?

Would these pass? OP3T + LineageOS + Kernel that doesn't show bootloader unlocked status? and also OP3T + LineageOS + Kernel that doesn't show bootloader unlocked status + Magisk? I'm currently on ...
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1answer
1k views

Booting kernel from fastboot

We all have heard of "fastboot boot xxxx" command. How does it work when you use it for kernel (fastboot boot boot.img)? Is it simple as this: it boot Android with that kernel if possible or it make ...
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356 views

Flash kernel image (zImage) on Android MTK based device (LG D680)

I want to flash a "custom" kernel image on a LG D680 required for the android keyboard gadget. https://github.com/pelya/android-keyboard-gadget I was able to compile a patched kernel image for ...
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Is there an update for kernel 3.14.0? Is there a higher stable kernel compatible with Marshmallow 6.0.1?

... If so, do I have to install it manually*, or does my Android device automatically update it on an as-needed basis? Is 3.14.0 even compatible with Android Marshmallow 6.0.1? My device is an RCA ...
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84 views

Samsung Galaxy S2 GTI9100 with unconventional kernel

First off, yes, this is a dupe of this question, but even after following the suggestions in the comments, I have come to a grand total of zero results. So, I thought I would try and post the question ...
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1answer
254 views

Use an SD card as internal storage

I recently bought a Coowell V5 with a S905X mobo. I overwrote its firmware with one from a Nexbox A95 (that has the same S905X mobo), and now my internal partitions disappeared(mmcblk0p0,...p1,...). ...
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1answer
513 views

Change the actual kernel on my phone

After reading the "benefits" that I could have after changing the kernel of my phone I would change the actual one that my phone has. I've already flashed custom roms in the past and my question is if ...
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1answer
858 views

Kernel module for create hostapd on android things

Hello I am trying to create an access point on android things for raspberry pi 3, the hostapd configuration: cat > data/misc/wifi/hostapd.conf << EOF interface=wlan0 driver=nl80211 ...
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2answers
195 views

Default terminal emulator/console

There should be at least a console accessible since Android use the linux kernel. Why is there no terminal emulator or console installed by default in Android OS ? Is there a particular reason?
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What's the logical name for Android's native GPS interface?

I'm trying to identify and locate the /dev/ pseudo-file that corresponds to the onboard, hardware GPS devices; installed in most modern Android smartphones, and tablets. I know that it probably varies ...
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1answer
3k views

Is USB debugging needed when flashing stuff?

I mostly worked on Samsung phones, but I also had a shot on some cheap MTK phones. Over the course of rooting/flashing roms/flashing kernels I built myself/using Odin (Samsung)/etc. on a lot of ...
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0answers
156 views

Emulator startup issue

I am trying to run a standard AVD (ARM, empty layout, other settings as proposed by Android Studio) on the emulator. Enabled -verbose, -debug all and -show-kernel modes. The emulator boots, but ends ...
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0answers
643 views

Remix OS Android Kernel Upgrade

I have recently Installed Remix OS on my pc. I found out that the linux kernel version on this version of Remix OS is 4.4.3 which doesnot support dual band wifi. How can I upgrade the linux kernel ?
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2answers
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Overcommit ratio settings for Android? (Kernal Adiutor)

I cannot seem to get a straight answer on this, and that is the Overcommit Settings in the Android Kernel. I only have a basic understanding of it, that it allows the system(?) to only use a certain ...
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2answers
71 views

How to stop power intake when completely charged?

Is it possible a process should run in the background of Android OS, and the only task of that process is to stop the power intake to the device when the battery is completely charged?
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1answer
151 views

CM-14.1 compilation error on Ubuntu 32 bit [closed]

I'm attempting to rebuild Cyanogenmod 14.1 with Realtek drivers support. I have managed to download the entire CM source code as well proprietary specific files for my phone which is a Motorola Nexus ...
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1answer
676 views

How does someone add devices to the lineageOS github repo?

My phone isnt currently supported by lineage and many other phones that either my friends or i have. So i would like to know how to add a new device tree and kernel for any self-builder to use out ...
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1answer
333 views

Device does not boot to system after flashing boot image

I unpacked the boot image from TWRP backup and repacked it without any modifications. but once i flash this image, it only boots to recovery - it fails to boot to android system. I used the tools from ...