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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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
60 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 ...
1
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1answer
713 views

How to enable sched_compat_yield?

I am not able to see the sched_compat_yield entry under /proc/sys/kernel/. How to enable this propery in the kernel (so that I can tweak it for some debugging purpose) ? Currently Available Entries: ...
0
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1answer
257 views

How I can replace linux module which are the same version?

I have compat-wireless module, it's built and patched. I really need to replace the module located in /lib/modules/3.2.0-4-686-pae/kernel/drivers/net/wireless/ with this one but I don't know how do ...
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0answers
187 views

State of vanilla kernel support of RaspberryPi [closed]

What is the state of the support for RPi in vanilla kernel? What is holding back any possible merge from the forked RPi specific kernel repo back into the upstream? Is there any technical issue with ...
3
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1answer
236 views

How to connect Linux to a HDD that has been “security locked”

In the process of playing around with several hard-drives, and hdparm's --security-set-pass and --security-erase options, I have a pile of HDDs that are in a "locked" state and I cannot unlock them. ...
4
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1answer
446 views

FreeBSD compatibility layer on Linux

I am aware of Linux mode on FreeBSD, where Linux binaries can seamlessly be executed in FreeBSD. From the FreeBSD handbook: In effect, there is a Linux kernel in the FreeBSD kernel. The various ...
2
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1answer
465 views

How to blacklist a particular bad RAM area in Windows? [duplicate]

I have found a RAM error with MemTest86+ (the version included with Ubuntu 13.04), it says: Failing address: 002f796c48 - 759.5 MB I have no money to buy new RAM now and the error seems to be ...
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2answers
57 views

In linux distros, except for a new kernel, what else could require a reboot?

The most common case is a new kernel as far as I know, but what are other cases that usually require a reboot, too?
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0answers
136 views

Linux kernel 3.9 new storage features howto?

Linux kernel 3.9 has been released, which brings new features for storage cache devices (dm-cache), as well as BTRFS RAID 5/6. These features are undoubtedly sexy, but are all but completely ...
2
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1answer
2k views

Extreme Kernel Paged Pool Memory Use (Win 7 64-bit)

I'm currently running Win 7 Pro 64-bit on a file server system with 12 hard drives. The drives are connected through 2x IBM M1015 controller cards (flashed to LSI 9211-8i IT mode firmware). I'm ...
0
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1answer
247 views

Where is my /boot/grub/menu.lst file

I m using VMware for my linux version Ubuntu 11.04 and i have searched for /boot/grub/menu.lst file but this file was not there. Why?? I was creating a new kernel in virtual linux but unable to ...
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2answers
1k views

In the output of lspci -vv, what do the Region lines mean?

I have the following output from running lspci -vv -s 00:00 on my single board computer running Linux. 07:05.0 RAID bus controller: Adaptec AAC-RAID (Rocket) (rev 03) Subsystem: Adaptec ...
2
votes
2answers
199 views

What cache makes a file search faster for the second time exactly?

On Windows on a HDD partition with Total Commander, if I make a file search on the file system root e.g. C:\, it will take considerable time: it display as it walks the entire directory structure ...
2
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2answers
1k views

How to disable device in Linux Debian (Wheezy)

I need to force the kernel to not load drivers for the Intel NIC in my PC to see if this helps on performance issues I have by using the second NIC that is on the same motherboard. How can I do this? ...
2
votes
1answer
748 views

Writing directly to /proc versus using sysctl -w

I am trying to configure the kernel of my Linux server so that it will not act as router, for more security. The point is not to forward packets. I have found this: echo 0 > ...
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2answers
300 views

I have compiled the 3.8.2 kernel and the fan doesn't stop after resume from suspend

Kernel config for HP 6730b notebook I can't figure out what I did that's causing this issue. This is xubuntu latest version 12.04.02 LTS Link for kernel config: http://pastebin.com/AuYWdNDR Any ...
0
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1answer
248 views

Union mounts not supported by the 3.8 kernel?

I've been using union mounts (unionfs) for live images and read-only rootfs images. But when I updated the kernel to 3.8, I found that there were no config items related to overlayfs. So the 3.8 ...
4
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3answers
886 views

where does Kernel reside on a multi-core system

Suppose I have a multi-core system, say 4 cores, and in this I pin 3 user process to a 3 CPU's. In such a case, where will the kernel reside? Suppose one of the user process make a system call, or ...
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2answers
151 views

Install VC Redist 2008 on Windows Server 2000

I recently set up a server with Windows Server 2000 (I know it´s old, but the hardware of the computer wouldn´t take more than that). Now I installed xampp which requires the VC redist package 2008. ...
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0answers
114 views

-kernel option like in QEMU for BOCHS

I am working on creating my own kernel using C/Asm. I have always used QEMU as my emulator mainly because I can specify -kernel and it boots the kernel directly without a boot loader. I wish to switch ...
2
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1answer
3k views

Debian wheezy frequent random crash

I have a fresh install of the debian testing distro with gnome-shell 3.4 and it crashes daily. By crash I mean, the sound keeps repeating itself, keyboard and mouse is unresponsive, and my only ...
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1answer
514 views

FEdora 17, Install specific Kernel version using yum

how can i install a specific version kernel version, I want to install kernel-3.6.11-1fc17.x86_64, however when using yum, it is saying no package available
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1answer
1k views

ubuntu: upgrading

i have some kind of problem with my system (it's a kvm vm with 2 gig ram and 50gig hd). when i try to install "linux-image-3.2.0-38-generic-pae" using apt-get, i'm told that there's no space left on ...
0
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1answer
115 views

Ubuntu wont recognize USB port

I have a problem trying to run Ubuntu 11... Oneiric Ocelot, it starts to run, and it seems to work but we need the usb port to connect the keyboard and mouse, the problem here is that it doesn't ...
2
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1answer
2k views

Building kernel 3.7 : use TICK_CPU_ACCOUNTING or IRQ_TIME_ACCOUNTING for AMD 64 Notebook?

I am using make oldconfig and don't know that to do now. (Usually I can make a choice by myself) * * CPU/Task time and stats accounting * Cputime accounting > 1. Simple tick based cputime ...
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0answers
368 views

What could be the reason behind this kernel panic

My laptop boots from the Fedora,Ubuntu live cd normally.But with Centos live cd there seems to be a problem as it displays the below lines. slab error in kmem_cache_destroy():cache ...
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4answers
5k views

Error while validating for Ubuntu 12.10 Kernel headers

I have my VMware Player (v 5.0.0 build-812388) all up and running Ubuntu (12.10) from my Windows (Win 7) machine. When I launch sudo vmware-config-tools.pl, it tries to search for kernel Searching ...
0
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1answer
215 views

If I install the Ubuntu Desktop on Ubuntu Server, will I still have the server kernel?

I know, I know, insert standard lecture of "You shouldn't install a GUI on a server OS!" But, after reading this guide: http://www.ubuntugeek.com/install-gui-in-ubuntu-server.html It implies that ...
0
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1answer
729 views

Boot a Linux Kernel on USB drive

I am trying to boot Linux kernel version 3.2.0 from USB drive. I formatted the USB drive with ext4 partition. I installed GRUB on it, and I copied two files, vmlinuz-3.2.0-29-generic and ...
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3answers
5k views

Linux Mint 14 severe overheating

I've tried switching to Mint (it was Mint 12) about 6 months ago, but failed to do it due to enormous overheating which made it virtually impossible to run any applications more complex than Gedit. ...
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1answer
455 views

How to combine Ubuntu/Debian kernel config into single config

Ubuntu has split up the kernel configs in the debian.master/config/ directory like this: linux-3.2.0/debian.master/config % tree . ├── amd64 │   ├── config.common.amd64 │   ├── config.flavour.generic ...
7
votes
2answers
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How to disable IPv6 on Debian Wheezy?

I know there's a wiki entry http://wiki.debian.org/DebianIPv6#How_to_turn_off_IPv6 that shows how to disable IPv6 in Debian Squeeze, but that's a 2.6.* kernel. What about 3.2.* kernels running ...
30
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2answers
4k views

Is it possible to compile a Darwin Distro from source, like you can a build a Linux Distro?

I have read through and undertaken Linux From Scratch (and BLFS) and I was wondering, can I follow this guide to create a Darwin Distro by substituting the xnu kernel? Would the process be vastly ...
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votes
1answer
270 views

convert the monolithic kernel of linux into microkernel [closed]

i want to convert the old monolithic kernel of Linux into microkernel (not the latest one but it may be older once like 1.0 or something) plz tell me is this possible or not(if not tell me the ...
0
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1answer
384 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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0answers
74 views

Making hardware profiles for Linux installation

So, I've got a ArchLinux installation on /dev/sda11, and I've imported it into VirtualBox using raw host partitions. Right now, I can boot it both directly and through VirtualBox. The problem is the ...
0
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1answer
590 views

KMS, linux kernel 3.7 and ati mobility radeon x1350

I got problem with booting new kernel. If I on bootloader pass nomodeset flag to the kernel linux boots up successfully but it doesnt load radeon module to kernel which is really frustrating cause I ...
2
votes
1answer
2k views

Linux kernel scheduler for a pen drive - noop or deadline?

I run Debian Live as a persistent system on a 16 GB pen drive. This is my workhorse every day system. I was earlier plagued with continual delays and freezes due to slow write speeds. I have ...
0
votes
1answer
177 views

Linux Redhat kernel source installation? [closed]

I downloaded my kernel source rpm version, uname -a, from the ftp.redhat.com site. When I installed the rpm it put it in ~rpmbuild. In the past didn't it put it in /usr/src/redhat? Did this change? ...
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0answers
428 views

How to find whether setcap is supported in Linux

I have a libpcap based application. Now, to allow non-root users to use my app, during installation , i use setcap setcap cap_net_raw=ep /bin/myapp But, in case the Linux Distro on which i install ...
3
votes
1answer
100 views

How is battery charge reported to the operating system?

This feels like a stack exchange EE question, but it seems like it belongs here instead. How is the charge of a notebook computer's battery reported to the operating system? Since all laptop ...
0
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0answers
116 views

show windows kernel memory

Is there a command-line tool that shows the Kernel Memory (and will let me redirect the output)? (Win2K and XP, at least) The task manager shows it on the main page (Total, Paged and Nonpaged), but ...
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2answers
178 views

How can I run a command on disk error?

System: Debian Squeeze What's it for: A System where any new disk is DoD Wiped. I'm looking for a method to fire a command on a disk error that the kernel throws, sometimes we get bad disks and it ...
3
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1answer
448 views

Difference between gnu and darwin and mach

These terms belong to the Mac OS X architecture topic and I'm confused about the following: mach is said to be a microkernel Darwin and XNU are mentioned to be a kernel So ...can you help me to ...
2
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2answers
80 views

Library functions are always implemented using system calls?

We know that system calls are requests by a process for a service from an operating system's kernel.[1] I'm asking this question because I wanted to know if a process can really generate a signal on ...
0
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1answer
69 views

Signals: Kernel-generated only?

Can processes really "generate" signals or they just request the kernel to send the signal on their behalf? And what about hardware interrupts? Do they get translated to software interrupts? Like, ...
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4answers
223 views

Does the kernel process need to save something when switching to user mode? [closed]

According to my professor, "while switching from user mode to kernel mode, the status of the user process has to be saved completely. But when switching from kernel mode to user mode, nothing has ...
2
votes
1answer
1k views

dracut Warning: Unable to process initqueue

I'm on Mageia2 x86_64 with kernel 3.3.8-desktop-2.mga2. The kernel boot normally. My laptop is old so i need the old kernel for better compatibility and functionality. The problem is that the old ...
0
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1answer
201 views

Can I safely apt get remove a kernel that I apt-get-install'ed?

I installed a pae kernel on my Ubuntu 12.04 32-bit box in order to try it (I thought I would add RAM to my computer which I finaly didn't). It automatically added an entry to grub's boot menu with ...