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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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
19 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 ...
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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
14 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 ...
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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
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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1answer
31 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 ...
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1answer
34 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
102 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 ...
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0answers
17 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
58 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 ...
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0answers
22 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. ...
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0answers
23 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
20 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
10 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
104 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. ...
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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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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 ...
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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
25 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
10 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
10 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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15 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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15 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 ...
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4answers
16k 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 ...
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1answer
315 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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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 ...
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0answers
37 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 ...
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2answers
78 views

Grub not listing the new kernel while booting

I recently updated my kernel on CentOS 6.7. That also cleaned up all the older versions, which also updated my /boot/grub/grub.conf, it has a single entry (of the new kernel). Now, when I rebooted, ...
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1answer
15 views

Docker images and the kernel

have just spun up a docker image which is running Ubuntu 15.10 on my own machine which is still on 14.04. From what I have read, docker containers use your existing systems services, including the ...
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2answers
3k views

nouveau without KMS

I have nomodeset when I boot my kernel, as I want to switch between nouveau and nvidia proprietary drivers within a session. However, nouveau won't load, complaining that kms isn't enabled (xorg.log ...
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1answer
54 views

Linux very slow and uresponsive - linux swapper process high usage

My laptop with archlinux kde5 is slow and unresposive, to do all task, open chrome or dolphin, etc. and sometimes freezing for 10-30 seconds like if i have a lot cpu usage, i try with different ...
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4answers
1k views

Linux kernel, Nvidia: Turning off graphics in Ubuntu

How can you turn off graphics at Ubuntu's GRUB -bootloader such that you can access and see terminal? I have a 5-year-old Nvidia graphics-card which is not anymore compatible with Linux kernel 2..18 ...
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1answer
69 views

Installing new kernel based on DEB's

I'm trying to test a proposed kernel for Launchpad Issue 1556562: VIA C7-D machine "kernel NULL pointer dereference" in skcipher_recvmsg_async. The proposed kernel is provided as a collection of DEB ...
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0answers
62 views

Kernel parameter to set framebuffer resolution

What is the parameter to set framebuffer resolution (1920x1080)? With a nouveau driver I didn't have problem with it - now I'm using nvidia (non-free)
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1answer
30 views

Change debian kernel had no effect

I upgraded my virtual machine from Wheezy to Jessie using debian provided help. The last step was to install new kernel do I did. > apt-get install linux-image-amd64 Get:4 ...
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0answers
14 views

How can I reserve hotplug bridge's memory only for prefetchable memory using the Linux kernel command line?

I have been trying to reserve more bridge memory for PCI hot plug devices using the kernel command line option 'pci=hpmemsize=256M,realloc'. This ends up causing an issue for non-prefetchable memory ...
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0answers
56 views

How can I understand what happens to my laptop?

I'm running Ubuntu 14.04 LTS which was recently upgraded to 14.04.03. With that upgrade came a new kernel (i.e. 3.11.0-18-generic) that breaks my X server. If I select a previous kernel version (i.e. ...
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3answers
5k views

Where's windows kernel file?

What computer file contains windows kernel? is it seen in task manager process list? if not, why?
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2answers
1k views

After installation of new drivers, Ubuntu won't boot into graphics mode

Here's what I did: At first I had nvidia drivers from 195 series installed from Ubuntu repositories and everything worked fine. I used system for some time, settled into it and have some data I don't ...
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16 views

System Hold on Starting INIT Version

after replacing motherboard as you see in this screenshot Kernel startup complete. Starting INIT version 2.84-gemdev-v008... And than INIT did not start, system doesnt do anything after this ...
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0answers
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linux kernel scheduler's load balance acting weird

The machine i’m running on has intel i-7 processor – which has four hyper threaded cores – which means 8 logical cores . I forked 100 identical process that run in an infinite loop doing sqrt() – ...
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0answers
68 views

gpu install fail - kernel configuration is invalid

I have been struggling to get an nvidia gpu installed remotely on an ubuntu 14.04 system. I blv. I have deactivated the nouveau login correctly and now hit 'kernel configuration is invalid'. I have ...
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0answers
86 views

pf-kernel repository for ubuntu

I looked for a long time, and never found a pf-kernel repository for Ubuntu, sometimes I find some compiled pf-kernels on the net, like this website who provides some compiled pf-kernels for Ubuntu ...
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1answer
140 views

Enable KMS after logging in

Is there some way to enable KMS after booting. My linux box is set up to log into a console, with X having to be started manually if required. I do not want to enable KMS on booting, as it causes ...
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0answers
37 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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1answer
60 views

Kernel panic reports. Fans max speed. Frozen mac.

My computer keeps shutting down unexpectedly, and also freezes sometime, followed by either unresponsive sleep mode, or shut down. Also fans run at max speed usually before it clashes. I keep getting ...
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1answer
560 views

Which processor family should I choose when compiling the kernel for an AMD Turion 64 X2 TL-52 CPU?

I have laptop with AMD Turion 64 X2 TL-52 CPU. Which processor family should I choose when configuring kernel?
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1answer
628 views

Compiling Linux Kernel with headers (AMD FX Piledriver)

I have compiled Linux kernel 3.9.7 for my AMD FX 6300 (with AMD selected as processor vendor during kernel compilation). After the installation, I restarted the system, and found that the ...
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How should I configure my Linux kernel (running on armhf architecture) if I want to use the NAT-table in iptables?

I successfully compiled a Linux kernel (version 4.4) with nat support for my desktop computer that runs on a x86-processor. Now I want to do the same for my server which has an ARMHF processor. The ...