Questions tagged [kernel]

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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GCC version for compiling a loadable kernel module

I am not very familiar with Linux, so may be my question is a little bit foolish. I would like to compile kernel module without recompiling the kernel (USB Wi-Fi stick driver for MT7106U chip). I ...
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raspbian does not boot on QEMU

I am trying to emulate raspbian on windows 10 64 bit. My start.bat is qemu-system-arm -kernel kernel-qemu-4.4.34-jessie -cpu arm1176 -m 256 -M versatilepb -no-reboot -serial stdio -append "root=/dev/...
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Implementing a system call for CPU hotplug on RPI3

My goal is to implement a system call in linux kernel that enables/disables a CPU core. First, I implemented a system call that disbales CPU3 in a 4-core system. The system call code is as follows: ...
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Compiling network driver: <asm/linkage.h> not found

so I have Raspbian in my RaspberryPi and I'd like to compile a simple network driver that I'm developing. For now, I just have a simple file including the headers, to make sure I installed the kernel ...
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1answer
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Patch a RPI image to get a root shell

I'm trying to reverse engineer an appliance based on RPI2, and I would like to get a root shell on the system. After dumping the SD I noticed that there's no rootfs partition (it exists but it's ...
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How to install diver for TL WN823N wifi adapter

[I know this question might be marked as a duplicated - but the point is that previous solutions didn't work for me...] Wifi Adapter: TP Link WN823N (EU) V2 Device: Raspberry Pi Zero Kernel 4.4.50+ ...
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Is it possible to have two display panel

I am trying to build a customized Android device with the following capabilities: have two display panels display mode A: two panel showing differently, so together they merge to one big screen. One ...
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How do I change/edit kernel name (the one in uname -r)?

I tried to change kernel version name of Raspbian using the steps in http://goterminal.blogspot.com/2012/02/make-kernel-name-same-as-your-name_07.html meant for Ubuntu. For example I want to change ...
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1answer
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Error compiling and loading driver on the Raspberry Pi

I bought a temperature sensor with a usb adapter and needed to install a driver for it, but I could not compile the driver provided by the manufacturer. pi@raspberrypi:~/CH341SER_LINUX $ make make -...
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SPI problem when install CAN controller driver

I updated my raspi to 3.18.7+ last days and i also need new driver for my modules. I was waiting for PICAN board driver for pi and yesterday i uploaded it. Before uploaded; ls -al /dev/spi* crw-rw---...
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1answer
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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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1answer
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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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1answer
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Boot error (PREEMPT ARM) and screen freeze

I had used and tested my RPi B+ almost 2 months ago, with different TVs (via HDMI and AV), and it worked without any problem. Today, I wanted to test my RPi B+ again (after 2 months of not using it) ...
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1answer
240 views

Cannot emulate Raspberry on QEMU

I have a problem when I want to emulate a Raspberry on QEMU. I created a "start.bat" where I put: qemu-system-arm -kernel kernel-qemu-4.19.50-buster -cpu arm1176 -m 256 -M versatilepb -no-reboot -...
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1answer
661 views

end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,6)

When I attempt to boot my Pi into a terminal I get this error, please tell me I can fix this somehow. [ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,6) ] I tried ...
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1answer
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dmi: Firmware registration failed

I have installed Gentoo kernel 4.14.y from https://github.com/raspberrypi/linux. dmesg shows the following errors ... ... [ 0.182547] dmi: Firmware registration failed. ... ... [ 2.224843] mmc1:...
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Kernel panic-not syncing: VFS: unable to mount root fs on unknown- block(179,2) running Raspbian Jessie

My RPi had power cut and after that didn't boot and this message comes on. I put a memory card in to PC and made changes in cmdline.txt file from /dev/mmcblk0p2 to /dev/mmcblk0p6 because I have seen ...
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2answers
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SPI driver for communication

I want to load my kernel module which communicates with my device over spi interface. I have tried loading my modules but it's showing spidev is already installed. I see 2 modules named spidev and ...

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