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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1answer
73 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 ...
0
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0answers
219 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 ...
1
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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), ...
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 ...
0
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1answer
155 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 ...
4
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2answers
7k 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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0answers
348 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 ...
0
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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 ...
0
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0answers
350 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 ...
0
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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/ ...
0
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0answers
174 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/ ...
0
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0answers
32 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 ...
2
votes
1answer
2k 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 ...
0
votes
0answers
12 views

Output of usbmon ( length field )?

In http://www.mjmwired.net/kernel/Documentation/usb/usbmon.txt#163 it is written that before status tag ,there is data length field ,in my output for usbmon http://pastebin.com/b6U7Je7h please ...
0
votes
2answers
1k views

How set default Kernal boot in Ubuntu

I want to default boot an older Kernal of Ubuntu, what is the best way to do this?
1
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1answer
491 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]: ...
1
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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 ...
0
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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 ...
0
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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 ...
1
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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 ...
1
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1answer
186 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
288 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. ...
0
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1answer
350 views

Error message - kexts installed improperly

I have just gotten an error message for every single kext file there is. The error message goes something along the lines of: The system extension "file path" was installed improperly and cannot ...
4
votes
3answers
866 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 ...
1
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2answers
922 views

System.exe explanation

I see a process in task manager called "System", and I couldn't find any kind of relevant explanation about it on the net. Task manager shows its description to be "NT Kernel & System". Could ...
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 ...
2
votes
1answer
114 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
365 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 ? ...
2
votes
3answers
1k views

In a multicore system, will each cpu have its own linux kernel?

What i meant was, in a multicore system with 'n' number of cpu's, will each cpu have its own linux kernel installed, or will all cpu's have a copy of the same kernel image? Another question ...
2
votes
1answer
732 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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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 ...
0
votes
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, ...
0
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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
votes
1answer
1k views

Compile the kernel to increase the command line max length

Following up on http://stackoverflow.com/questions/14176089/system-command-line-max-length-in-perl, which say the max length for exec/command line arguments is controlled by ARG_MAX. So I want to ...
2
votes
1answer
214 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 ...
0
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1answer
110 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
247 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 ...
1
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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 ...
7
votes
1answer
3k views

How can I enable kernel crash dumps in Debian?

I want to enable kernel crash dumps for my Debian 5.0.7 machine. The kernel version is 2.2.26 amd64. How can I configure this?
1
vote
1answer
444 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 ...
16
votes
5answers
6k views

Is kernel a process?

In Linux, we always say the first process is init(pid==1). but why is not the kernel(startup) which setup the system and create init process. Is kernel a process? We know all the user space threads ...
1
vote
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 ...
6
votes
1answer
4k views

How do I analyze excessive Windows kernel mode CPU usage?

My Windows XP machine recently started to semi freeze on me every odd reboot after a few minutes of usage (different programs / no additional prg start at all). Update: I have now managed to get a ...
2
votes
1answer
235 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
199 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 ...
2
votes
2answers
196 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 ...
0
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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 ...