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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Updating kernel on a Chromebook to prep for Chrubuntu

Pretty simple question: I have read that by setting my Chromebook to the dev channel, it will install a later kernel. Currently it's 3.4.0, and it'd install 3.8.0 (64-bit, no less). However, after ...
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1answer
957 views

Updating Chrubuntu 14.04 kernel on Acer C7 (currently 3.4.0)

There was another, similar question on this here, but it's for old ubuntu versions, and the script no longer works. While installing, the script works fine until: + vbutil_kernel --verify /dev/sda6 ...
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103 views

Testing Linux Kernel in QEMU gives black screen after brief text

I'm trying to run a linux kernel (version 3.14) I custom built using make menuconfig. I am trying to test it in QEMU and this is the command I am trying to run: qemu-system-x86_64 -kernel ...
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2answers
91 views

Why I can't upgrade my kernel?

I have perform the following command into ssh shell: sudo apt-get upgrade sudo apt-get update sudo reboot But I still have an old kernel version, infact: pi@raspberrypi ~ $ uname -a Linux ...
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1answer
1k views

how to install 'version.h' in ubuntu ?

Just now , I try to install the Jungo WinDriver in the Ubuntu 13.10 . But I am puzzled by the its manual of how to Install version.h : Install version.h: The file version.h is created when you ...
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0answers
220 views

No COM1 port on hyper-v

I just made a fresh Windows 8.1 install and am trying to set-up a VM for kernel debugging. Therefore, I need to create a serial link to debug the VM using windbg. Usually I just simply add a new COM ...
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1answer
74 views

How to specify this 'symbolic link' for the Jungo WinDriver?

Just now , I try to install the Jungo WinDriver in the Ubuntu 13.10 . But I am puzzled by the its manual : 4.2.3. Linux WinDriver Installation Instructions 4.2.3.1. Preparing the System for ...
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0answers
20 views

PCI configuration method error (Linux Kernel)

(I'm not sure if here is the best place for that question, so I will be pleased if anyone suggests me a more proper forum for that.) I'm trying to install Ubuntu 12.04.4 in a netbook (from an usb), ...
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1answer
159 views

How to add iptable support to the kernel (for Wheezy/Sid release)

I am running an ARM processor (similar to the raspberry pi) and my kernel doesnt natively support iptables. If I run apt-get install iptables, it successfully installs but NAT tables are unable to be ...
3
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0answers
3k views

Perf samples too long, lowering kernel.perf_event_max_sample rate to

My machine freezes from time to time and I can get it working back by pressing the space key. I have this problem since two weeks now, but it was just once per day max. Now it's starting to be many ...
2
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1answer
65 views

Kernel panics on numerous identical systems running the same OS image

I am trying to diagnose an interesting problem that affects perhaps a dozen or more identical computers. We have an increased rate of kernel panic errors lately, yet I cannot figure out how to ...
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0answers
349 views

kernel panic: VFS: Unable to mount root fs on 03:02

I'm studying kernel compilation for my operating systems course. Unfortunately I'm compiling Linux v2.4.20 and Red Hat 9(yes, they're making us use it and it drives me crazy but I've NO CHOICE ...
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1answer
42 views

Windows HAL dll cannot be used anymore

I ve got this weird problem. For a long time I was running xp sp3 with /hal=halmacpi.dll switch in boot options. Everything fine. I just booted to the "old" normal mode, without the switch. (I used ...
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1answer
5k views

Errors mei_me 0000:00:03.0: timer: connect/disconnect timeout. after upgrade to 14.04

I upgraded from ubuntu 12.10 to 14.04 and now I get dmesg|grep mei [ 19.246502] mei_me 0000:00:03.0: irq 48 for MSI/MSI-X [ 24.280045] mei_me 0000:00:03.0: timer: connect/disconnect timeout. ...
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0answers
19 views

what do i do after editing a *.c file in the linux kernel

I have been having sound issues with the VT1802 AKA VT2002 I have copied over a possible fix into the file patch_via.c in dir /var/lib/dkms/oem-audio-hda-daily/0.201405052014~ubuntu13.10.1/build/ ...
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0answers
360 views

Windows equivalent of alt + sysrq + REISUB/REISUO

Is there a (kernel-level) Windows equivalent to the Linux Magic SysRq key combination REISUO/REISUB? i.e. Redirect keyboard to console Send a quit signal (non-forceful kill) Send a SIGKILL ...
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0answers
175 views

Mount Error (mount: page allocation failure. order:5, mode:0x40d0)

I am trying to mount mtd block on temporary file system(part of RAM). Some times mount command fails and below error comes in dmesg logs. Command: mount -t jffs2 /dev/mtdblock7 /temp/configuration/ ...
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0answers
33 views

How to tell which devices have been denied in a device cgroup?

In Linux Control Groups (cgroup), one can use the device subsystem to allow or deny access to device files. By default, all devices are allowed in the top-level cgroup. If I deny a certain device, by ...
0
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1answer
24 views

Gentoo virtualbox X support

So i wanted to play around in gentoo to level up my linux knowledge. I've installed it on virtualbox, but i didn't add a few USE flags, and during core compilation i didn't select a few necessary ...
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2answers
1k views

How to use usbmon for knowing amount of data transferred from usb (pendrive )?

Please someone explain me in simple terms how to use usbmon to track the amount of data transferred from pendrive ?
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0answers
184 views

Debugging linux kernel, SIGKILL

Trying to debug linux kernel (vmlinux) with gdb during my education, but after I run kernel I just got "program terminated with SIGKILL": gdb vmlinux-3.11.0-12-generic ...GDB header... Reading ...
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1answer
3k views

Why is the System process using 40-60% of CPU power all the time?

TL;DR: ACPI.sys is constantly using lots of CPU power. Virus and malware scans all come back clean Drivers are up to date (GPU, Chipset, USB devices) Possibly important info: This install of ...
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1answer
77 views

How to add code into the linux kernel?

I am studying how to analyse and evaluate the TCP/IP protocol stack of Linux. My goal is to study the performance of the tcp/ip protocol stack as a whole, to study the time cost of each layer and ...
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1answer
330 views

Downgrade fedora 20 kernel

I want to downgrade fedora's 20 kernel (3.11) to version 2.6 because I have a package that only supports that kernel. I have looked everywhere for 2.6 kernel for fedora 20, but with no luck. If I try ...
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1answer
95 views

Custom kernel 2.6.18 compile in centos ends on fail

I'm compiling from RPM source. The same compile worked in the past but not this time. May be you can help me to solve this issue? make[2]: Leaving directory ...
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1answer
189 views

Remove i486 kernel (retain i686 kernel) after install

I'm repurposing an older 32-bit machine. After a Debian install, I have the following GRUb entries: Linux 3.2.0-4-486 Linux 3.2.0-4-686 I don't need the i486 kernel. I have been deleting the i486 ...
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0answers
38 views

Debugging not-loading Windows XP x64

The question is related to this one: Windows XP x64 hangs at welcome screen. So I want to debug WinLogon.exe through Windows Kernel-Debugger remotely using an 1394 (Fire Wire) port on the system asked ...
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1answer
55 views

Need To uncompress the initramfs file

I am new to this Linux Kernel and I am trying to boot a board from the usb and I was sucessfull Now My problem is the usb has two files a) initramfs.cpio.xz b) linux.img Now what I need to do ...
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0answers
291 views

Syslogd: hardware error

The machine has been sending these messages to the terminal, paired with beeps from the speaker on the motherboard. These messages appear every 5 minutes, sometimes naming CPU2, sometimes CPU3. ...
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2answers
1k views

Not enough host controller resources for new device state

I have a debian mint based system where I plug in 16 usb devices. The Kernal is: 3.11.0-12-generic After about 10 or so devices I start to experience problems with connecting new ones. There error ...
0
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0answers
99 views

OS X MCP_ELPG_VCORE_STS_SATA_POWERED_UP never reached! error

I'm using a macbook air and it keeps shutting itself down in the middle of usage and brings the following error Anonymous UUID: 3B35044A-64F2-3EA5-3C7B-5C908E62F2F6 Mon Mar 17 23:52:31 2014 ...
11
votes
4answers
6k views

Killing wininit.exe shuts down Windows

When I kill wininit.exe, Windows 7 suddenly shuts down. Can someone explain this using Windows mechanics? I feel like this might because the process provides something important, or this might be a ...
2
votes
1answer
117 views

How to git clone specific linux kernel build

I know I can git clone the linux kernel using the following: git clone \ git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git \ linux-2.6 But I'm wondering how to clone a specific ...
1
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1answer
370 views

In sysctl.conf settings, what is the difference between 'all' & 'default'?

In context of sysctl.conf settings, what is the difference between (all vs. default) like net.ipv4.conf.all.accept_source_route & net.ipv4.conf.default.accept_source_route in sysctl settings ? ...
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1answer
35 views

How to setup mainline kernel

I need to set up mainline kernel on my ubuntu machine. I went to the kernel.org and downloaded the the zip file and unzipped it. Now, I have the copy on my local machine. But how to keep it updated, ...
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2answers
162 views

What does the below sentence mean? [closed]

Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows. — Wikipedia's Windows CE entry. The cited source for that sentence in Wikipedia is a ...
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0answers
74 views

My windows 7 keeps randomly freezing when I'm doing a variety of activitiess

The screen stays the same but goes unresponsive, and I get a loud ringing robotic sound through my headset. Log Name: System Source: Microsoft-Windows-Kernel-Power Date: ...
2
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1answer
58 views

How is system call executed [closed]

From the point of view of application programmer the system call is just invocation of a procedure from wrapper library. As I don't have good knowledge of assembly I was wondering how it is done on ...
0
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1answer
111 views

Ubuntu kernel upgrade after graphic card driver update

I use Ubuntu 12.04 with an ATI Radeon 5450 graphic card. I use 2 monitors, and I had to update the video driver because the default one doesn't remember its settings after reboot. I have found out ...
0
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1answer
248 views

Linux benchmark SSD vs HDD

I wonder if there is any performance difference when using SSD as the main Hard drive rather than mounting it to be used by different applications on the server. For example using a command line ...
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0answers
297 views

how to resolve kernel_security_check_failure

I am trying to re-install my Nokia-E5 software by Nokia suite ,I have windows-8.1 OS on my laptop , I am getting this error kernel_security_check_failure . And my laptop restarts. I have no idea how ...
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votes
1answer
81 views

On telnet session file edit not happening using vi editor

I used rlwrap because with telnet session arrow keys were not working, after starting telnet session with rlwrap am not able to edit the file in using vi editor. Whether its problem with rlwrap.If i ...
2
votes
1answer
215 views

What is the rationale behind the default values for adjtimex --adjust?

The adjtimex utility has an --adjust mode that can be used to compare the system clock with the CMOS clock, calculate suggested values for the tick and frequency offset kernel time variables, and ...
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1answer
96 views

Questions about behaviour of running LiveCD Linux after unmounting a CD-ROM

Could anyone explain what happens in system after unplugging CD-ROM during working with LiveCD session? Suppose that I'm using Ubuntu LiveCD and suddenly by accident the CD-ROM disconnect for a ...
4
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2answers
8k 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 ...
2
votes
1answer
241 views

Can a kernel that supports multi-core reduce cpu overhead, reduce cpu overheat

I found only a single core as identified by kernel from /proc/cpuinfo. Therefore I am installing a 686 pae kernel to identify all cores and get multi-core functionality. I read about how a process ...
2
votes
1answer
200 views

Ubuntu: change kernel order

How can I change the boot kernel order in Ubuntu server 13.10? grep menuentry /boot/grub/grub.cfg menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option ...
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2answers
3k 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 ...
8
votes
3answers
5k views

Allow non-root process to bind to port 80 and 443?

Is it possible to tune a kernel parameter to allow a userland program to bind to port 80 and 443? The reason I ask is I think its foolish to allow a privileged process to open a socket and listen. ...
0
votes
1answer
56 views

Strip Linux for a fixed-hardware system [duplicate]

Apologies if this is not the appropriate place to post! I am designing a minimal Linux system to test on an industrial PC. The ultimate goal is security. The hardware of the PC is known and will not ...