The kernel is the central component of the operating system and manages hardware, process scheduling, file systems, virtual memory paging, inter-process and network communication, etc.

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Installing user-mode-linux on jessie

I am trying to install user-mode-linux on raspbian jessie and tried aptitude search user-mode-linux and it only shows the corresponding docs package as available. also the debian packages list it ...
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45 views

Stuck in Recovery login after building and loading the Linux kernel

This is the first time am working on Raspberry Pi boards, and I have ordered and received a new Raspberry Pi 3 board, I have installed the default Raspbian OS. Now I wanted to update kernel and I ...
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55 views

Kernel version on Raspberry Pi-2

Is there hardware limitation for installing kernel on Rpi-2. I want to install 3.10.y on raspberry Pi-2 but either black screen or splash screen is there and I am unable to resolve the issue. Is there ...
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17 views

Ubuntu MATE booting into Rasbian lock screen then not starting?

I have two micro SD cards, one with Raspbian, one with Ubuntu MATE. After using a different monitor for a while, I went back to my flat screen, and it said "Not Supported". So I changed the HDMI ...
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31 views

spi stopped working after upgrade

I recently ran apt-get dist-upgrade on my Raspberry Pi B. Afterwards the spi-devices /dev/spi* were gone. This is the changelog of the upgrade: Package changes: +device-tree-compiler 1.4.1-1+rpi1 +...
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50 views

I cannot change the kernel on 4.4.11-v7+

I have a pi 2B where I installed raspbian using noobs on 6-14-16. I have been trying to compile drivers for a wireless nic, specifically the archer T4UH. Doing this requires that the kernel be ...
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45 views

Finding Pi kernel 3.10.x or 3.9.x Image to download

From where can I get raspberry Pi kernel- 3.10.x or 3.9.x image for, to install on pi-2
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52 views

Starting a touchscreen on the raspberry pi 2

I'm using this touchscreen with my raspberry pi, but it won't work. I used this tutorial and everything goes fine until I reach the startx part. When I type startx the terminal prints: X: user not ...
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107 views

Raspberry pi 2 with Freertos

I am quite new to rasberry so maybe I am falling on some simple error. I want to run FreeRtos on a Raspberry Pi 2 Model B V1.1. I have succesfully compiled the FreeRTOS port for Raspberry obtained ...
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22 views

Kernel-panic after swtiching from uClibc to glibc

I have a working buildroot environment based upon uClibc. I need to switch to glibc in order to add the bluez5 package. After rebuild all on boot I get a kernel-panic error: not syncing: Attempted to ...
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124 views

What does mkknlimg exactly do, and what is a trailer?

I recomplie the Raspbian kernel for Cirrus Logic audio card, following this description. https://github.com/CirrusLogic/rpi-linux/wiki/Building-the-code and I wonder what does mkknlimg exaclty do. ...
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28 views

Controlling the act-led

Hello everyone I am trying to control the act-led of my raspberrypi 2 running jessie. By following steps provide by this link *my main.s code is .section .init .globl _start _start: ldr r0,=...
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13 views

applied Linux Kernel, got pcm512x error

I am using raspbian jessie on raspberry pi 2. recently I wanted to apply PREEMPT-RT patch. I followed steps in that link https://www.raspberrypi.org/documentation/linux/kernel/building.md After ...
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121 views

Spiral of death after kernal update 4.4.8-v7+: How to restore Kernel with no internet connection?

I updated my raspberry pi to the latest kernel 4.4.8-v7+ using rpi-update... After updating everything started to go downhill:lxpanel would crash loop on start up and wireless adapter was not working ...
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21 views

RPi B+ ST7735 on kernel 4.0.7+

i've lcd ST7735 1,8 inch. I want to use it as framebuffer but i see only on internet modification to do this on kernel 3.8... Can i use this on kernel 4.0.7? Maybe someone knows another solution.
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41 views

Issue interfacing GPS module with USB to ttl cable

I am following this tutorial https://learn.adafruit.com/adafruit-ult ... rything-up on connecting GPS module with pi. However, when I do sudo cat /dev/ttyUSB0 I do not see any output from the device. ...
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59 views

CLFS custom build, kernel panic or nothing happens

I have a problem with custom CLFS build for RaspberryPi B+ and was struggling with it for few days in a row, I am literally out of ideas for now. Here is my story: Some time ago I started to build my ...
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110 views

What kernel modules and other setup are needed for using the RPi3 built in Wi-Fi?

Question I'm trying to get the Wi-Fi working (again) on my model 3. I am not using Raspbian. Which kernel config settings and loaded modules are needed for the Wi-Fi device to show up in ifconfig -a?...
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90 views

Kernel Panic on Raspberry Pi 2 on the 2. boot

This happens to me every time: I prepare a fresh microSD card on my Mac, put it inside my Raspberry Pi 2. It boots fine. I shut it down and boot again (or Reboot). It fails with a Kernel Panic. Why ...
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53 views

Why my RPI in showing black screen and two icons?

I'm able to boot into Raspbian, but the screen is black and is showing the icons and I'm not able to use Keyboard or mouse. It was working fine until today. and this is what I'm getting before the ...
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2answers
66 views

Using GPIO to emulate another device

I'm looking to connecting some devices to the GPIO pins on the Raspberry Pi Zero, (namely a VGA connector). So I was wondering what are the steps to tell the Kernel to say these pins aren't GPIO, but ...
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Kernel module still in use afther executing `$ echo 3 > /dev/tlc5947` (reference counting error)

Hellow I'm tring to learn writing kernel modules and device drivers. As a begginig I decided to start by making a driver for my tlc5947 led matrix. From simple kernel module with parameters I moved to ...
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18 views

Xinu ported on Raspberry Pi

Can someone help me how to port the Xinu embedded OS on RPi? I have already got the 'xinu.boot' file by compiling and building the tool chain for xinu. Also I have installed the Raspbian on the SD ...
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72 views

How to set pull up/down resistors in a kernel module

Hellow I'm enthusiast newbie in linux kernel modules development. I started writing basic kernel modules that control Pi's gpio. But i came in to sticky situation i need to set pull up/down of pins ...
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32 views

how to change kernel zImage for raspberry pi

I'm using yocto to build linux for rpi2 and I don't want flashing full sdimg to sdcard. I just want replace kernel image into rpi2 and don't want change rootfs already in sdcard. How I can do that? I ...
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325 views

It is possible to run Raspberry Pi 3 with a 64-bit kernel and 32-bit user space?

I just got my hands on a Raspberry Pi 3 and I would like to start experimenting on it, specially regarding the 64-bit instruction set. I'm well aware of the pros and cons of the 32-bit versus the 64-...
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2answers
90 views

Pi unbootable after restoring image to SD card

I backed up my Pi 8GB SD card using Win32DiskImager. I then wrote that image to another (exact same size/brand) 8GB SD card, again using Win32DiskImager. Now when I tried to boot the Pi using that ...
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220 views

Raspberry Pi 2 SoC support in Linux 4.5

Today Linux Kernel 4.5 was released with support for Broadcom BCM2836 (Raspberry Pi 2 SoC) (sic). What does it mean exactly, given Raspberry Pi 2 is already working under linux?
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414 views

Raspberry Pi cannot create temp file for here-document: No space left on device

I have a 16 MINI SD CARD been used in my Raspberry Pi . I currently have a few programs installed like vim and etc which should only take up around 300mb in total. Why does it say my /root directory ...
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175 views

Switch to newer kernel installed via .dpkg

TL;DR. How do I switch to a newer kernel I just compiled & packed as .deb? Generally, is there a sane way of upgrading a raspbian kernel remotely using a .deb package? I have successfully cross-...
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Linux headers generic package not found

I need to compile this driver, however I'm missing my kernel headers. I've tried installing them the normal way: $ sudo apt-get install linux-headers-generic Package 'linux-headers-generic' has ...
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1answer
365 views

Raspberry Pi-2 with mainline Linux kernel

With several nice commits landing into the mainline of Linux Kernel for version 4.5, is it already possible to compile and boot a mainline kernel (e.g. 4.5-rc6) on a Raspberry Pi 2? If yes, then what ...
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1answer
120 views

Can't mount volume encrypted with aes-xts-plain64 after upgrading to Jessie

I have an encrypted disk attached via USB. After upgrading to Jessie, I'm not able to mount it any more, getting error Check that kernel supports aes-xts-plain64 cipher (check syslog for more info) ...
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1answer
50 views

How to make a distribution bootable on raspberry pi / package migration from 32-bit x86 Debian install?

I have a Debian based distro that boots and runs fine on a 32-bit PC. What I would like to do is be able to do the same with this distribution on a Raspberry Pi. It has packages on it that are custom ...
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0answers
230 views

How to use the perf utility on raspbian?

I'd like to use the perf tool on my 2016-02-09 Raspbian Jessie operating system. For that, I have installed the linux-tools package (which contains perf). The kernel version in use on that image is 4....
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72 views

linux-imag-?-dbg and linux-headers package missing

I'd like to make use of systemtap on my 2016-02-09-raspbian/jessie system. For that I need the kernel debug package and the kernel headers. The kernel in use is: root@raspberrypi:/home/pi# uname -r ...
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88 views

What does this mean? [duplicate]

I installed OpenELEC 6.0.1 on my Micro SD card and inserted it into my Raspberry Pi 2 B. The Pi flashes the green light 2 times and then goes off (seems normal), and then a rainbow screen appears and ...
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363 views

CentOS Development Tools “No package kernel-devel available.”

When attempting to install the Development Tools on CentOS 7 I get the error: Error: Package: systemtap-devel-2.8-10.el7.armv7hl (base) Requires: kernel-devel However I can not seem to ...
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1answer
800 views

Getting kernel headers for raspberry pi 2

I'm attempting to create a virtual video device on raspberry pi 2 using v4l2loopback and prior installation of the v4l2loopback on their website in the Dependencies section they say that the kernel ...
0
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1answer
48 views

Raspberry Pi 2 and Adafruit Thermal Printer 597

I have been encountering problems regarding my raspberry pi 2. I've been following the instructions given @ https://learn.adafruit.com/pi-thermal-printer/overview when I change parameters in my /...
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19 views

Embedded Xinu for RPi

I have completed with setting up the cross compiler but stuck with the compiling part. I have build all the gnu binutils and the gcc successfully in the directory: /home/admin/xinu/opt. But while ...
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2answers
136 views

Low Enery Consumption Kernel

I am thinking about compiling the kernel in order to have a low consumption configuration ready for the raspberry. Is there any configuration or .config created before compiling it with the power ...
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0answers
122 views

What USB video grabber chipset is supported by the Raspberry Pi 2?

I am looking to capture USB Video on the RPi2. Afaik, there are three devices that have had good success using on RPi 1 models. But I can't use them on the RPi2 because of the below reasons. stk1160 ...
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1answer
95 views

Recover pi 2 from wrong kernel build?

I built rt kernel incorrectly, so it did not boot at all and I left the old one with a different name. I want to know how to change these files back so it can be booted??I mean by a program for SD ...
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1answer
66 views

Cross compile kernel error

While compiling rt kernel following this http://www.frank-durr.de/?p=203 I got that error
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629 views

Asus USB WiFi driver install

I am in the process of creating some access points and have bought three RPi2. Before this purchase I've followed this tutorial and managed to create an AP. For that I used 1 Raspberry Pi 2, ...
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1answer
242 views

Boot the Raspberry Pi 2 with custom kernel and initramfs

I want to boot my Raspberry Pi 2 with a custom configuration. Therefore I have a kernel image and an initramfs file. The /boot directory looks like this: /boot/my_kernel.img /boot/my_initrd.img I ...
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1answer
1k views

How compile a loadable kernel module without recompiling kernel

I have read quite a bit about how to compile a kernel module on (and for) the Raspberry Pi, but I'm still not quite able to figure out why it's not working. I have been able to build the module, but ...
6
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1answer
268 views

Essential parts for booting the Raspberry Pi 2

This git repository contains pre-compiled binaries of the current Raspberry Pi kernel and modules, userspace libraries, and bootloader/GPU firmware, as you can read it in the README file: https://...
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1answer
117 views

conflicting dtoverlays

I'm using a GPIO connected display 1 which requires a patched kernel and dtoverlay=4dpi-3x in /boot/config.txt I would like to use a DS18B20 temperature sensor which requires dtoverlay=w1-gpio to show ...