Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
0answers
6 views

kernel compiled successfully but wifi not working [on hold]

I have ported kali Nethunter kernel for my android device (Redmi note 5 pro whyred)... Kernel build successfully and phone also booting with my kernel. Only problem is wifi not working after booting ...
0
votes
0answers
2 views

Xperia Z1 freezes and reboots

I know that this is bug in Stock Lolipop 5.1.1, still i haven't collected any kernel logs because when i need root i just use custom roms, because they are more flexible and there i don't have that ...
-1
votes
0answers
16 views

How to Customize the Android Operating System [closed]

I'm entering a new android world and would like to understand android customization. I have a project where I want to change the Android layout both at startup and in some of the features. I am kind ...
1
vote
1answer
48 views

What position do cellular communcation (1G, 2G, 3G, 4G or other function only implemented in phone) play in Android operating system archtecture?

I am entirely new to Android, but have a little knowledge on Linux. I have view the architecture graph of android on official site: The Problem: Not all android device support cellar network. As a ...
0
votes
0answers
17 views

Can't use adb after phone startup until unplug/replug USB cable on Galaxy S3

I am doing some Android kernel development and would like to be able to quickly flash a kernel and reboot my phone to test my changes. Unfortunately, whenever my phone starts up, I can't access the ...
0
votes
0answers
21 views

How to install Kernel Driver

https://android.googlesource.com/kernel/msm/+/android-7.1.0_r0.2/drivers/hid/hid-huion.c I want to install the driver linked above. How should I do it? I'm running on a custom rom so do I tamper with ...
0
votes
0answers
13 views

How do I load an unsigned Kernel Module to my signature enforcing Kernel?

I compiled a kernel module (wacom.ko) using the proper kernel source for my device and Google toolchain. When I tried to insmod the module, an error message popped up saying required keys not ...
0
votes
1answer
35 views

Should Android kernel version date match the release date?

In the process of checking the settings on my Sony Xperia XA I came across the Linux Kernel information. Version 3.18.35 was released in June 2016 but the date shown is from 2017: 3.18.35+ BuildUser@...
2
votes
0answers
91 views

Android OS (Phoenix OS) restarts when i insert headphone in 3.5mm jack

What I have tried: I have tried USB earphones and mic, both works perfectly, So it should not be Sound/Audio issue in Android. If I keep earphones plugged in during boot, PC shuts down at "...
0
votes
0answers
32 views

How to disable sensors on-demand to reduce power consumption?

Nowadays, any Android device has a big sensor amount implemented. It is true that most of the sensors do not require a considerable amount of power for their operation. But the sum of the power ...
0
votes
1answer
37 views

Where to find information about WiFi connectivity of the device?

is there a way I can find information about my device's connectivity to WiFi network? I need information like: what network I'm connected too, what is the mac address of the router, how long have I ...
0
votes
1answer
32 views

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 ...
5
votes
1answer
775 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'...
1
vote
0answers
83 views

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 ...
0
votes
0answers
89 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 ...
2
votes
1answer
211 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 ...
0
votes
0answers
19 views

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 ...
0
votes
0answers
107 views

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-...
-1
votes
0answers
26 views

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 ...
0
votes
0answers
114 views

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 ...
2
votes
0answers
227 views

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 ...
0
votes
0answers
113 views

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 ...
0
votes
0answers
134 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/...
0
votes
0answers
220 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 ...
0
votes
0answers
40 views

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 ...
0
votes
1answer
120 views

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 ...
0
votes
2answers
680 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 ...
0
votes
0answers
50 views

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 ...
0
votes
1answer
99 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 ...
1
vote
0answers
401 views

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 /...
0
votes
1answer
500 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 ...
0
votes
1answer
3k views

“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 ...
0
votes
0answers
83 views

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 ...
0
votes
1answer
134 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 ...
0
votes
0answers
80 views

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 ...
-5
votes
2answers
325 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 ...
0
votes
0answers
56 views

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 [...
0
votes
1answer
534 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,...
0
votes
1answer
192 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 ...
0
votes
1answer
2k 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 ...
0
votes
0answers
399 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 ...
0
votes
0answers
377 views

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 ...
0
votes
0answers
102 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 ...
0
votes
1answer
272 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,...). ...
0
votes
1answer
567 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 ...
0
votes
1answer
937 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 ...
1
vote
2answers
232 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?
3
votes
0answers
68 views

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 ...
4
votes
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 ...
2
votes
0answers
160 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 ...