The main component of most operating systems, the kernel manages most of a computer's communication between hardware and software. Typically, the kernel is the lowest level of abstraction a programmer can have to a resource.

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Kernel boot time detailed analysis like Systemd

Is there something less verbose, more like a chart that turns easier to figure modules and Kernel load on boot? I've tried old bootchart but it kernel panicked. If not, dmesg is the only choice? Not ...
3
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1answer
4k views

Kernel data types u8, u16, u32, u64 not resolved

I am trying to compile some files related to wireless subsystem (mac80211) which use datatypes u8, u16, u32, u64. These are not resolved. The header file being referred to is linux/types.h which is ...
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1answer
927 views

Two Kernel Panics in two weeks, what's wrong? [closed]

I've had two kernel panics in two weeks on my Macbook. Any idea what's wrong? Here's my report: Interval Since Last Panic Report: 386578 sec Panics Since Last Report: 2 Anonymous UUID: ...
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0answers
29 views

PC crash Event ID 41 (63)

I played overwatch during open beta and for the first week or two after release with no problem, however now whenever I'm playing usually in the menus my PC will reset. My event viewer shows Event 41 ...
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0answers
32 views

install custom kernel and rootfs on board SMDKV210

I need help to install custom uboot + kernel + rootfs on a device with board SMDKV210 (device is panel INEWTEK) So the fact is that worked on a device (inewtek) with board SMDKV210 (call it old board ...
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1answer
3k views

What do these error messages mean and how to fix it?

============================================================== actually I figured out this is an issue of intel video driver:http://lkml.indiana.edu/hypermail/linux/kernel/0902.3/01703.html =========...
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0answers
5 views

DKMS modules for multiple kernels

I have a Ubuntu Studio 16.04 installation with both generic and lowlatency kernels installed that I can choose when I boot (I generally use generic but I may use lowlatency in case I want to do ...
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0answers
14 views

No suitable module for running kernel found - ubuntu 12.04 on LINODE

I am trying to install VirtualBox with Vagrant in Ubuntu 12.04 on a Linode VPS. Everytime I try installing VirtualBox i get an error saying No suitable module for running kernel found {fail}...
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0answers
18 views

Fedora 24: no build.include / try to generate autoconf.h

Trying to build a package which needs autoconf.h So i installed kernel-devel, ran make oldconfig and make prepare but unfortunalety it did not work Couldn't find any solution in the web, any ideas? ...
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0answers
11 views

Downgrade linux kernel on EC2

I'm on an ubuntu 14.4 ec2 box. I need to downgrade the kernel version from 4.2... to 3.13... Can this be done? I don't understand what access I have to the bootloader, whether GRUB runs as normal, ...
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0answers
19 views

linux: device not accepting address XX, error -32

since quite some time and across distribution updates (fedora 21-24) and kernel updates (now 4.5.7-300.fc24.x86_64) my system endlessly produces the following messages in the system-log (which is also ...
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3answers
10k views

how to know if noatime or relatime is default mount option in kernel?

I was trying to know if relatime or noatime was set on a filesystem, but i didn't found the information, neither in /etc/fstab, neither in kernel boot options. First of all, it seems clear that i don'...
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0answers
5 views

Linux malloc segmentation fault missing [migrated]

The included program should produce a segmentation fault in Linux, but it doesn't. #include <stdio.h> #include <stdlib.h> #include <unistd.h> /* This program should produce a ...
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2answers
4k views

Ubuntu Server 13.10: How to downgrade kernel

Ubuntu Server 13.10 appears to be very unstable, I got random crashes of the system with no apparent reason and nothing is showing in syslog. This is screenshot from the console when the crash ...
13
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7answers
7k views

Linux distro with just busybox and bash?

I just want a linux distro that boots fast, has a bash terminal (no gui) and busybox. Is there any such distro or is it hard to compile a kernel and just make one myself?
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1answer
44 views

Are Kernels hardware specific?

From my understanding, the Kernel provides the link between software and hardware, and therefore the Kernel must direct system calls being made by OS applications, correct? So would different I/O ...
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0answers
59 views

Get custom kernel parameter variable of booting qemu

Im currently using qemu on windows for testing my own linux distribution. its a embedded version built with buildroot. After building the distribution i have created a iso file. When i start the ...
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0answers
38 views

Lenovo Yoga 700 14ISK Ubuntu Dual Boot Wifi Issue

I bought this lenovo yoga 700 14isk laptop just under a year ago and am trying to dual boot with ubuntu. It appears as though there is a lot of problems with the wifi driver, which carries over to ...
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0answers
35 views

Compile Linux V4L-DVB media_build for a specific kernel (not the running one)

Is it possible to compile the LinuxTV.org V4L-DVB media_build for a kernel source contained in a specific path, instead of the running one (i.e. a different version)? I have the kernel sources and in ...
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0answers
5 views

Ubuntu 14.04: How to let printk print to a specific file

In earlier version of Ubuntu, this can be done by modifying the /etc/syslog.conf file. But now in Ubuntu 14.04, this file is not missing. How can I let printk print to a specific file?
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1answer
34 views

Linux kernel “half configured”

I've been running Debian Wheezy for over a year with no problems until a week ago. For no obvious reason, the system has suddenly decided that the Linux kernel is only half-configured, and none of ...
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1answer
32 views

Why would a Linux computer with no Nvidia hardware get indigestion over an Nvidia kernel?

I'm running Debian Wheezy on a computer with ATI / AMD graphics and no Nvidia hardware. A week ago, with no obvious cause, apt decided that it needs to configure Nvidia graphics any time it runs, ...
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1answer
8k views

What does `apt-get install linux-headers-generic` do

Looking for explanation on apt-get install linux-headers-generic. What does installing linux-headers for a kernel do ? The significance of that command at the time of kernel installation and after a ...
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1answer
106 views

Test program to configure MPLS datapath in Latest Kernel 4.1.3

Latest Kernel supports MPLS datapath in kernel, However there is no test program, or any guide how to write user space program to configure a MPLS datapath in kernel. I browse the kernel code and ...
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1answer
46 views

Is there any way to get correct system time without NTP?

I'm developing industrial embedded device on the ARMv7, 3.10 kernel. First, before taking up the main subject, let me talk about hardware time. Amlogic meson8b is core unit, so i used "aml-rtc" as ...
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1answer
50 views

Lots of unwanted packets installed in ubuntu 12.04 with apt-get due to typing mistake. How to revert?

In my virtual ubuntu 12.04, I was installing ruby2.3 but by mistake, I have put space in between ruby and 2.3. sudo apt-get install ruby 2.3 It has installed more than 9 GB packages including ...
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0answers
35 views

Delete kernel module completely

I would like to ask you how can I delete some kernel module completely? I mean really delete, not unload or prevent to load. I tried to use rmmod, but it just unloaded module, same as modprobe -r. So ...
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1answer
20 views

How a kernel is ported on hardware?

In smp schedulers, a scheduling daemon is run on every core, actually i want to know how this is possible that (NBR_CORES) copy of a program run separately on different cores? (I'm new in kernel and ...
2
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1answer
216 views

how to create rescue initramfs image on centos 7?

After my last launch yum update my test box have kernel-3.10.0-327.13.1 installed. While installing, dracut generated initramfs-3.10.0-327.13.1.el7.x86_64.img, but initramfs-0-rescue-...
3
votes
1answer
53 views

CPU cores remain offline after hotplug

When my UPS triggers an "on-battery" event, I want all cores to switch off to conserve power. The PC has 8 cores on two chips, UPS batteries need replacement every 3 months because of high current ...
0
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1answer
126 views

Windows 10 Kernel-Power 41 error after go to sleep

I have a recurring problem with my ASUS G56JR notebook under Windows 10, somehow the the system crashes after to go sleep. When I awake it, the eventlog shows the following: I read a guys problem ...
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0answers
116 views

What exactly does acpi_backlight=vendor do

I have an issue when booting Linux with a device plugged to USB 3.0. If there is anything plugged (USB stick, keyboard, …), the system hangs on start with blank screen and does not react even on SysRq....
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0answers
23 views

What happens if you start ntoskrnl inside a running windows?

What would happen in the event that you started ntoskrnl.exe inside a running windows that is not sandboxed? It would work in a VM since you can VM windows. I cannot find anything online about it ...
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0answers
129 views

Grub does not pick up new kernels (was: How to update Fedora's kernel)

In a seemingly endless quest to get Vagrant working I am trying to update Fedora. Vagrant needs VirtualBox, VirtualBox needs kernel sources, and kernel sources are only available for the latest kernel ...
3
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0answers
54 views

How to generate soft lockup in Linux Kernel and how to verify?

I was testing soft lockup recovery procedure of Linux Kernel. I set /proc/sys/kernel/softlockup_panic to 1. And I created a Kernel module as described in the link below. https://github.com/saiyamd/...
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0answers
54 views

Updating the kernel on a Linux Mint Live USB

I'm following this guide: https://community.linuxmint.com/tutorial/view/1784 to update a Linux Mint ISO. Specifically, I'd like to update the kernel of this version of Mint to 4.4.8. For kernel ...
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0answers
36 views

Linux RT vs 'niceness' priority and preemption

I wanted some clarification on the differences between real-time linux process priority (-99 - -1) and normal user-level 'niceness' (0 - 40) priority, and the effects on scheduling and pre-emption. ...
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0answers
18 views

Control Linux kernel multi cpu usage at boot

I am developing a mobile system, that has certain limits in power consumption. The system has for example 4 or 8 cpu cores. If running, the total power budget is usually low due to idling of most of ...
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1answer
107 views

WD Green Hard Drive and home linux server

Are newer WD Green Hard Drives still a problem for Linux nowadays? The discussion here is focused on home linux servers, not NAS or data centers. Here is a summary of my research from googling. "...
2
votes
3answers
6k views

How do I compress a vmlinux kernel into vmlinuz?

The question is pretty much summed up by the title - I've just built a kernel which has generated the vmlinux output file. How do I compress this into a vmlinuz image?
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votes
1answer
1k views

Kernel-power error, automatic reset the computer

I have a problem sometimes when i run full screen application, sometimes the machines goes automatically to reboot with no warning, I was looking in the event viewer and seems to be a kernel-power ...
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1answer
26 views

why does asynchronous I/O require buffering?

I read in some introductory lecture notes on I/O and operating systems that "asynchronous systems require buffering". Why is it so please? Cheers
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1answer
12 views

Why X-s restarts after magic Alt+SysRq+REI?

Just curiosity: Which part of my debian is responsble for immediate restart of my X-s after I press Alt+SysRq+REI? ("I have just killed every process - why I have forthcoming "Choose your username" ...
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0answers
13 views

ALG IPSEC and RSTP

I have linux 3.18. my Linux is installet on a router. in this router I activate a NAT from the wan side. Does this Linux support ALG of IPSEC and RSTP ?
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0answers
55 views

Mach_kernel twice gone missing on iMac Lion x.7.5/El Capitan X 11.3

iMac 2009, seriel VM9228X9259, 8GB RAM INTERNAL harddrive is the 500GB, which is slowly dying, but still working. OSX 7.5 This was the first to lose its mach-Kernel, from manual shutting down to ...
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0answers
21 views

NanoPi2 external wifi dongle doesn't go UP

I've got a NanoPi2 (it has an internal wireless card embedded) and I'm trying to configure another wireless device (usb) because I need two wlans working both at the same time. I know that the ...
7
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4answers
17k views

Why Centos still not using Latest kernel

As i have seen many changes and improvement in kernel 3.xx The improvement i like is dmcache which introduced in kernel 3.9 I have 3 server with centos installed on all machine Centos is still ...
0
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1answer
555 views

Install Virtualbox on Linux Mint 17.3 with upgraded kernel 4.4

Fresh Linux Mint 17.3 install on a Thinkpad T460. Upgraded kernel from 3.19 to 4.4.0-15 to get WiFi working. Now can't get Virtualbox to run. I need Virtualbox to run Vagrant. Error! Bad return ...
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0answers
22 views

I am trying to get Ubuntu 12.04 to run on my Nook simple touch, but it keeps throwing me the error below

This is the error it keeps throwing me `Fatal kernel too old` My kernel isLinux localhost 2.6.29-omap1 #27 PREEMPT Thu Sep 27 19:12:38 CEST 2012 armv7l GNU/Linux Could there be something wrong ...
0
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0answers
49 views

System went to sleep last night for no good reason

I've recently built a new computer running windows 10 with x99 motherboard and for some reasons my Windows went to sleep mode last night for no good reason. When I woke from my sleep the computer ...