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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Turn on out of memory killer

I am running ubuntu 13.04 and currently if any user accidently writes some code that uses too much RAM it brings the whole system down so badly I have to switch the power off and on again. Is there ...
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2answers
65 views

Unable to configure the Linux Kernel v3.8.9 source code

I'm running Linux Mint with kernel version 3.8.0-29-generic. So I downloaded and extracted the Linux Kernel 3.8.9 source code and placed the folder in the main directory. Now using the command make ...
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60 views

cifs mount failed with return code 13 after building kernel 3.12.1

I was using the PING.ISO (Part Image is not Ghost) 3.02. The ISO is a simple file structure with all the work being done in a python script. I needed drivers for a newer PC, so I remastered it with a ...
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1answer
988 views

Logitech M560 mouse on linux sends messed up input events

My friend bought yesterday a Logitech M560 mouse (you can see it here) and tried it on her Ubuntu system. It seems to be a relatively new model, so there is no info about it anywhere, except for ...
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40 views

Can a driver be compiled alone instead of the whole linux kernel?

I made some changes to the serial driver on my linux machine. I've been trying to compile the module and reload it, but it throws some errors. Instead, if I recompile the whole kernel it works fine. ...
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1answer
234 views

Why are user level threads faster than kernel level threads?

I found out that user level threads are a lot faster than kernel level threads but I could not find any convincing example of WHY is user level threads are faster than kernel level threads ? Could ...
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3answers
61 views

How do I get the latest linux kernel, and why would I want to do that in the first place?

I'm running 3.10-3-686-pae, and I think I would like to upgrade to 3.12 just so I can learn more about how it all works. My computer runs pretty well considering how old it is. I have been learning to ...
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2answers
65 views

Will applications running in root mode be able to overwrite OS's or other program's memory section?

I read here that any application running in root mode can issue a kernel call and execute in kernel mode. Is is possible that ANY application running in root mode can make a kernel call, go to kernel ...
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2answers
87 views

Can linux kernel be installed alone without any other existing OS

Hi I am newbie to linux world. I have just downloaded the latest kernel from kernel.org. I want to install this simple kernel into my PC(my PC is formatted and has empty hdd). Can I do that? if so, ...
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5 views

How to approach searching for sources of interface unresponsiveness

On Debian Linux: On a relatively powerful machine I ran an update and both the kernel and the window manager got updated to newer version. At that point the machine become noticeably less responsive: ...
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1answer
74 views

Why is my Mac contacting Romania?

I just used Onyx to clean out my caches and log files after which I did a reboot. Browsing the "All Messages" panel of the Console app I noticed this line: 10/27/13 3:38:03.000 PM kernel: ...
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1answer
97 views

How to make Linux reliably boot on multi-cpu machines?

I've got two machines, one with 4x12 AMD Opteron cores (AMD Opteron(tm) Processor 6176), one with 2x8 Xeon cores (HT disabled; Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz). On both machines I experience ...
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28 views

How to debug a kernel created using ubuntu-vm-builder?

Aim: Trying to perform a code walkthrough of what functions are getting called for sending and receiving packets over the network. I am building a kernel and using gdb for debugging/ tracing ...
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0answers
13 views

Is there any boot analyser that works straight after GRUB

and analyse the whole process of loading Linux kernel till you get to see the desktop of your PC
2
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1answer
56 views

Which classes of drivers require an ABI bump for Windows 8.1?

I noticed that Windows 8.1 installed a lot of new drivers for several of my devices, but I don't know if that's because there was just an updated one available on Windows Update, or if the kernel ...
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4answers
210 views

Is the Windows kernel considered an “application”?

If it is true that all Windows files with the ".exe" file extension are considered "applications", is NTOSKRNL.exe, the Windows kernel, an "application", or is this an exception to the rule? What ...
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3answers
68 views

Are linux driver support at kernel level?

Until now, I thought that linux drivers are at kernel level. That means, drivers are packed inside the kernel, so different distributions should support the same hardware as long as they run the same ...
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0answers
167 views

Problems with mounting HFS+ drives

I have a problem mounting some hfsplus drives. I just need them mounted readonly. (disabling journal is not an option) I did a lot of research and found out that due to changes from kernel version ...
3
votes
1answer
51 views

On certain Linux boxes, variables in the stack seems to be initialized to 0 - why?

I have a buggy program that pushes a variable onto stack and may use it without initialization. I take the same binary and run it on different Linux boxes. Those boxes have different CPUs (i5, i7), ...
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0answers
51 views

linux + squashfs-tools for red-hat 5.3

I want to install the squashfs-tools-4.0-5.el6.i686.rpm But I have the following dependencies ( after RPM installation ) please advice what the additional packages that I need to install on my linux ...
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2answers
82 views

Why do linux kernels include files for all devices?

The kernel for my device includes so many files for other devices and situations that my device cannot use. The kernel carries around the files for everything and is much bigger than just the files ...
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0answers
60 views

How to kill the issue with Linux, where most modern USB devices coming with 500mA MaxPower?

I have Sound card, Camera devices USB interface, all of them i have are 500mA MaxPower showing using lsusb -v | grep MaxPower Now those hardwares with Linux works about 1 hour or half hour and then ...
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0answers
115 views

Mouse stops moving after a every few seconds, but revives after click action

I am using Arch Linux and according to "uname -r" my Linux Kernel Version is 3.10.10-1-ARCH. This problem appeared after a full system update recently. Any idea how to fix this? Thanks in advance ...
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327 views

CentOS - Software raid - Kernel not booting - initrd?

Centos 5.9 64 bit on Raid 1 using mdadm. We have been trying for almost 2 days now to get this back going and have exhausted the resources and our minds on it, I would be glad if somone would point ...
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38 views

How can a driver change the kernel page table?

I am encountering an issue with kernel memory. When my driver finishes running, the other processes in kernel fail to run, for example, I do "ls" command, the command crash kernel with error ...
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168 views

core dumps kernel.core_pattern and abrt

I have some trouble understanding the behavior related to core dumps. I know the kernel.core_pattern specifies the pattern of core dumps and if it contains a directory it uses that location for ...
2
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1answer
1k views

Adding system call to kernel 3.11 [closed]

What I want to do is add a dummy system call to the 3.11 Linux Kernel. What I did: Downloaded and extracted kernel v3.11 from kernel.org and placed it in /usr/src In file, ...
2
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1answer
140 views

Linux kernel option to force video card to stay on

I just installed Debian Wheezy 7.1.0 on an Intel vPro System (Intel Core i5-2520M, SuperMicro MBD-X9SCV-Q-O). Intel AMT's KVM works perfectly until Debian has completed booting and shows the login ...
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1answer
48 views

Is the source code for OS X kernel logging messages available via XNU, or is it “proprietary.”

It would be kind of nice to understand just exactly WHAT all those messages that appear in log files really mean. I'm not necessarily talking about errors, but even informational messages. I realize ...
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2answers
506 views

Linux - prevent disks spinning up

On bootup all disks are spun up, but 4 are just backup (and pretty noisy too). Soo I'd rather prefer to never ever spin them up at all when booting. Is there a kernel option which tells the kernel ...
0
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1answer
202 views

Kernel bypass possible with non-specialised NIC?

Is it possible to perform kernel bypass and have a NIC send data to the user space (where I will write my network stack) with no copying, without having to purchase a specialised Solarflare etc NIC?
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100 views

RTL8188CUS on linux

I used my wifi usb dongle, 0bda:8176 RTL8188CUS, successfully on a raspberry pi with raspbian (kernel 3.6.11+ compiled for arm). now I want to have wifi on my dell desktop and the same dongle but it ...
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58 views

Load AIX kernel extension in AIX on reboot?

Does anyone know how to load AIX kernel extensions on reboot? I know that Oracle loads it's postwait kernel extension via a executable in /etc/inittab. I'm assuming this executable calls the ...
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2answers
127 views

Advantages / Disadvantages to rolling my own Linux kernel? [closed]

I was thinking about installing a fresh copy of Ubuntu on my main machine. Along with doing so I was thinking about rolling a mainline kernel to get all of the latest support for hardware and such ...
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1answer
265 views

trouble compiling linux kernel from source

I am trying to compile a kernel from the source tree found at https://github.com/fio-prf/em, and I am getting the following error when I run make: make[1]: Nothing to be done for `all'. make[1]: ...
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0answers
93 views

How do I configure fsnotify's queue size/watch limit on OSX?

Note: This might be a StackOverflow question, since it's about something that's only accessible via the internal API on OSX, but I'm posting it here since it seems to be more about using a tool that's ...
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0answers
26 views

When an image on an editing program is rendered on Windows, is the program parsing it, or is the kernel doing it?

so I know this question is confusing, but luckily I am a computer programmer and can make it more clear if you would help me out by reading on. A simple program, liek MS-Paint, will "know" how to ...
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3answers
4k views

Macbook freezes, console printing kernel: disk0s2 I/O error

Yesterday I've closed my mac, opened it today and experienced horrible performance slowdown, beachball, and eventually a freeze. After several reboots I managed to close most of my applications but ...
0
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1answer
421 views

Configuring DRAM size when compiling an ARM (linux-sunxi) kernel for an allwinner a10 tablet

I've got a goclever a103 tablet (http://goclever.com/goclever_tab_a103) and I want to install linux on it to boot it from an SD card. First thing I found online were SD card images for a very similar ...
0
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0answers
94 views

Shutdown issue on QEMU emulated ARM Vexpress machine

I have built an ARM kernel from source using kernel 3.9.10 (from kernel.org) with my inital config being vexpress_defconfig. I am using a ramfs created using busybox 1.21. (cross compiled for ARM), ...
2
votes
1answer
2k views

DKMS fails to compile fglrx-driver on Debian Sid (using kernel-3.10-1)

My 'play' box (Debian Sid) just received an update for the kernel (3.10-1-amd64). Right after I installed appropriate linux headers I received an error from DKMS indicating failed build. Below is the ...
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2answers
83 views

File POSIX Capabilities

In Linux kernel v2.6.~ there was an option File POSIX Capabilities in kernel configuration, which, in particular, is necessary to build and use Linux Containers successfully. I'm currently using ...
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0answers
42 views

What does “comm” mean in the dump_trace?

I got the following line in my warning message: [ 1415.645393] Pid: 3547, comm: mkdir Tainted: P kernel-3.0.58 #1 What does comm and #1 mean? I guess comm means command? If so, does that mean mkdir ...
0
votes
1answer
243 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 ...
2
votes
1answer
52 views

PearOS - Is it actually Linux?

I just downloaded PearOS 7 for both its look and the fact that it was linux... Until I thought about it. PearOS is a distro that was made by a french developer. Does it use the kernel that say... ...
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1answer
1k views

How to compile and install new kernel in Chrubuntu with samsung exynos 5 (ARM coretex-A15)?

I have successfully installed Chrubuntu 13.04 (kernel version 3.4) on samsung Chromebook Exynos5 with ARM coretex-A15. And I also tried to update the kernel version to 3.9 by downloading new kernel, ...
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61 views

Device Enumeration Flow in Linux

As far as I have understood the process of Enumeration, along with interrupt urb we install completion handler in hub_probe() method. This hub_irq() is invoked whenever corresponding hub's endpoint ...
3
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1answer
183 views

enabling CONFIG_LIBIPW on kernel compiling

I need to enable CONFIG_LIBIPW=m on kernel 3.4.0 I see that IPW2100, IPW2200, and PCI needs to be enabled, but I could not find any clue where they are on the menuconfig. I read on ...
0
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1answer
94 views

What's the type of my Ubuntu kernel?

Four commands on my pc: $ dpkg -l |grep linux-image Linux kernel image for version 3.4.0 on 32 bit x86 SM It means my Ubuntu kernel is 32 bits? $ uname -a Linux ny 3.4.0-030400-generic ...
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1answer
41 views

How can a param be added to boot-command but not accepted by sysctl?

I can successfully add libata.ignore_hpa=1 to my boot command and the following cmd will yield a '1' upon boot: cat /sys/module/libata/parameters/ignore_hpa but grep'ing sysctl -a for libata and ...