This tag is for questions about the internals of the Linux kernel itself - particularly about use or configuration of kernel modules or drivers.

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1answer
218 views

Why does my Slackware 13.37 freeze with a kernel bug?

My Slackware 13.37 started to freeze from time to time. Mouse and keyboard stops working, while xmms still playing the song. I paste my syslog and I hope someone could see the reason it crashes. BUG: ...
1
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1answer
3k views

Linux boot - stop the kernel switching to a new framebuffer mode clearing output

I'm working on an embedded system (based onUbuntu 12.04 LTS) and I'm customizing its kernel. I'm having some problem with upstart, mountall and plymouth. Nothing unsolvable I suppose, but the real ...
1
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0answers
125 views

Installing Kernel 3.5.1 breaks boot up

I have twice tried to update my kernel from 3.2.0.30 to 3.5.1 on my Ubuntu 12.04 32 bit system using two different methods I found via google. In both cases the operation appeared to run flawlessly ...
1
vote
1answer
232 views

Is there any Base Filtering Engine (BFE) service in Linux similar to windows

In windows we have Base Filtering Engine which helps applications to monitor network traffic. Is there any similar service which runs in Linux too. Something similar to a packet filtering service. I ...
1
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0answers
172 views

An error during bochsdbg installation

I want to install bochs which can debug the kernel. First, I download a package, then: tar zxvf bochs-2.4.6.tar.gz<br> cd bochs-2.4.6.<br> ./configure --enable-debugger --enable-disasm ...
0
votes
1answer
109 views

I'm compiling a modified Linux kernel in Ubuntu; can I recover from a corrupted kernel if I boot into recovery mode?

I have installed Ubuntu from wubi.exe along-side windows, and I am a new user to it. If my kernel has an error after modifying it and replacing the previous one, does the "safe" option in my ...
1
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1answer
28 views

which module of linux kernel can be loaded dynamic

So, is there a list of the modules which are loadable? Is the schedule module loadable? my english is poor, maybe you know what I say.
5
votes
1answer
266 views

Kernel hacking methodology - how to find out where to hack the linux kernel

I have a throw-away cheap laptop I'd like to twiddle around, a Thinkpad SL 500. What bothers me are two leds, the one for wireless connectivity, and the one for hibernation, which don't light up at ...
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3answers
363 views

Linux How can I prove if udev installed?

How can I prove if udev is installed and working proper? Just call udevadm would be a method, right?
1
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1answer
63 views

A tiered approach to cloning linux partitons

I'm looking at a strategy for cloning Linux (root) partitions without having to use a Live CD. Literature suggests rightly that the source and target partitions must be umounted to be able to get a ...
1
vote
2answers
912 views

Update in grub.cfg file for loading new kernel image in Ubuntu 11.04

I am new to Linux. I am compiling Linux kernel (ver: 2.6.34.12) in gcc in traditional manner in VMware machine in Ubuntu (kernel version - 2.6.38-8-generic) 11.04 version. I am unable to find, where ...
0
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0answers
2k views

How to make VirtualBox or VMWare (or any other virtualization software) use a native guest network driver?

I've just posted something in stackoverflow and was asked to post this question here. I have a problem I could use some help with... I am really not an expert in virtualization, so I don't know if ...
0
votes
1answer
154 views

in which kernel version CONFIG_IP_NF_MATCH_OWNER appears?

In which kernel version CONFIG_IP_NF_MATCH_OWNER key appears? I dont see it while make mennuconfig on 3.2.28 that I am trying to compile for my ubuntu 12.04 (3.2.0 - default kernel version).
0
votes
1answer
569 views

serial console output goes away while booting

I added console=ttyS0,57600n8 to my kernel command line. I get the normal boot messages until this [ 5.123106] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) Begin: ...
4
votes
1answer
9k views

Where can I find the Linux kernel file?

Is there any common directory to find kernel file in all Linux distributions?if yes please tell me how to browse to the directory? Where can I find the Linux file in Ubuntu & RedHat operating ...
0
votes
0answers
245 views

Not able to mount HFS partition in Linux (SD Card)

I am trying to mount an HFS Plus partition in my Linux embedded target(2.6.35) and I ended up with the following error: "mount -t hfsplus /dev/mmcblk0p9 /mnt" mount: mounting /dev/mmcblk0p9 on /mnt ...
1
vote
2answers
670 views

Why program fails when started using /lib/ld-linux.so.2?

$ /bin/bash -c 'echo qqq' qqq $ /lib/ld-linux.so.2 /bin/bash -c 'echo qqq' /bin/bash: xmalloc: ../bash/variables.c:2176: cannot allocate 3 bytes (8192 bytes allocated) Why this happens (zsh4, python ...
5
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8answers
7k views

Where is installed software stored in Linux? [duplicate]

Possible Duplicate: Where is a typical Linux program installed I'm new to Linux and I want to ask a bit more about packages. In Windows, I download an .exe file and install it. When I ...
1
vote
1answer
970 views

system clock is not set correctly on startup

i have strange problem with the system clock in my Linux system, TinyCore, kernel 2.6.38 . dmesg says the following: rtc_cmos 00:04: setting system clock to 2012-08-08 19:20:00 UTC ...
2
votes
0answers
182 views

What does the linux kernel/initrd loading time depend on?

I recently updated my Linux kernel from 3.1.10 to 3.5.0. Upon booting with GRUB, I noticed that this kernel (or the initial ramdisk?) takes a much longer time to load (~5-6 s vs. ~1 s with the old ...
0
votes
1answer
2k views

Redhat Linux enterprise kernel source code location?

I have downloaded Redhat Linux Enterprise version 6.2 ISO and installed it. It’s running fine and everything looks ok; however I mounted the ISO to look for the kernel-source, or src rpm and I cannot ...
0
votes
1answer
2k views

Disable “longhaul” kernel module with a GRUB command?

I've got a problem with a VIA C3 (1GHz)-system: the system freezes immediately when the CPU frequency goes under 731MHz because of an incompatibility with the (not completely implemented) i686 ...
0
votes
1answer
810 views

Failed to mount disk at startup

I have a 10.10 Xubuntu installed with the kernel 2.6.35-22 but for work I need to make a downgrade to 2.6.30.5, for that, I compiled the kernel with all modules I need (or so I think) and when ...
1
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3answers
5k views

How to recover the password for a particular user account on my linux pc

I have a linux pc on which several users are configured to login. for the same PC i have the root access (username and password). I have lost one of the user accounts password. How to get back the ...
0
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1answer
58 views

Building modules with linux kernel for custom flavor

I followed the instructions for building a custom kernel and booting it. Everything works fine, except that when building it, I used the option skipmodule=true (as given in this link), so I guess the ...
9
votes
4answers
1k views

Does linux have any measures to protect against fork bombs?

#include <unistd.h> int main(int argc, char* argv[]) { while(1) { fork(); } } I run this program on my linux, nothing outputs on the terminal, the OS seems go dead. Does linux have ...
0
votes
1answer
494 views

Flashing an IP Camera and Add a new Linux distro [closed]

I have a foscam IP camera, it has no USB etc, just wireless and cabled network connections. How would you flash a device like this? And how would you install your own Liunx distro on it ? Could ...
2
votes
0answers
215 views

Capture key events at system level to control e.g. alsamixer

In Linux window managers, it is easy to define actions for key events - e.g. in openbox: <keybind key="XF86AudioRaiseVolume"> <action name="Execute"> <command>amixer set ...
0
votes
1answer
524 views

VMware tools patching - Kernel 2.6.37+ (Slackware 13.37) Graphics Drivers Not Working

Good day, I am using Slackware 13.1 in VMware Fusion 3 (latest) on my OSX10.6 laptop. I recently upgraded my Slackware 13.1 machine which is directly installed on a spare PC to Slackware 13.37, no ...
0
votes
3answers
129 views

wait for kernel after creating partition with sftdisk on linux

I am creating a partition with sfdisk under linux. After partition creation I want to create a filesystem. This fails with mkfs.ext3 not finding the partition: echo ",,L" | sfdisk $DEVICE mkfs.ext3 ...
1
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0answers
108 views

Linux and battery usage [closed]

I want to install a linux distro on my laptop but I do not want to have a massive battery drain. I remember reading some kernels drain the battery faster then others? Would Mint Linux or Ubuntu out of ...
0
votes
1answer
449 views

X server not starting up after new kernel compilation

I have compiled the Kernel on my 64-bit Debian XPS Studio 1340 Dell system. srikanth@debian:~ - 05:40:52 PM - $ uname -a Linux debian 2.6.32-5-amd64 #1 SMP Thu Mar 22 17:26:33 UTC 2012 x86_64 ...
5
votes
3answers
2k views

Is it possible to make the OOM killer intervent earlier?

I try to tweak my development system to maximal reliability. I disabled swap, because for GUI usage it mostly renders the machine unresponsive in such a way not useable anymore. Nevertheless, if ...
0
votes
1answer
163 views

Kernel compilation and free space

I am compiling linux kernel 3.0.1 My operating system is Ubuntu 11.04 The source is in /usr/src/linux-3.0.1 Though there is no free space remain in / the compilation is still going on .. ! What is ...
0
votes
1answer
784 views

USB Mouse / Keyboard issues with Linux

First and foremost, this problem only occurs when I compile one of the more recent Linux kernels (3.2.6 or 3.2.7). I do not have these issues when running the stock kernel 3.2.6 or 3.2.7 kernels under ...
0
votes
1answer
161 views

linux chmod causing crash

I needed to give write permission to file representing GPIO pins,out of curiosity i taught changing permissions of all files/folders,by mistake instead of doing chmod 755 * in the root I did chmod ...
1
vote
1answer
2k views

“64-bit mode not compiled in” error while compiling Linux kernel

I am building 2.6.18 from CentOS source code. I'm at the last step to the build process in their instructions but seem to be getting an error that I can't understand. Instructions I'm following: ...
0
votes
2answers
4k views

How to show overall usage of system resources in linux?

Is there any way that i can see all system resources usage together in terminal, as we see on windows platform under Resource Monitor. I can see each resource usage under Linux separately, but i need ...
1
vote
0answers
1k views

Use initrd as root filesystem for network boot

I'm creating a stand-alone set of netboot images based on a LinuxFromScratch installation (7.0, kernel 3.1.0). I want to deploy that image to many diskless clients, but NFS is in my situation not an ...
2
votes
1answer
686 views

ZFS distribution in Linux kernel? [closed]

If anyone has a better title for this question feel free to edit I am wondering about something related to the conflict between CDDL (Sun's license) and the GPL. Mainly pertaining to the reason ZFS ...
2
votes
2answers
370 views

What does this macro mean in linux kernel code?

see i found one config file in which this are macro defined # # Input Device Drivers # CONFIG_INPUT_KEYBOARD=y # CONFIG_KEYBOARD_ADP5588 is not set CONFIG_KEYBOARD_ATKBD=y # CONFIG_KEYBOARD_QT2160 ...
7
votes
2answers
15k views

Linux kernel hangs at 'Switching to clocksource tsc" on Pentium 4

Hardware: Dell Dimension 4500S : i845G, Pentium 4, stock + 2GB RAM and latest (circa 2002) BIOS update. I've been building a Linux system from source, so far it's LFS 7.0 by the book. The first ...
0
votes
1answer
1k views

VirtualBox Under CentOS vboxdrv not loaded

I am a newcomer with linux. I have a little problem with linux. Whenever I try to open [start] virtual box, I get this error and do not know how to fix VERR_VM_DRIVER_NOT_INSTALLED (rc=-1908) The ...
-1
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1answer
475 views

Open a linux port without using iptables in Centos? [closed]

just a quick question, is it possible to open a port on linux Centos without using iptables? If so, how do I do that from the command line?
2
votes
2answers
647 views

Where do I look for Linux kernel module documentation?

Where do I look for Linux kernel module documentation? For example, I've tried googling the module iwlagn, but I cannot find anything that tells me about available options. Where do I look?
1
vote
1answer
1k views

Kernel log littered with re-mount attempts because of going to/from battery mode. How do i turn it off?

My boot times became a bit too much so i decided to take a look ad kernel log to see what might be causing the problem.. There i noticed repeating: 12/17/11 02:25:28 PM EXT4-fs (sda6) ...
0
votes
1answer
181 views

Installed linux-image-686-pae and now my second monitor won't work

I just installed linux-image-686-pae on my Debian system and the PAE kernel effectively increased the memory limit. However for some reason my dual monitors both show the same image, instead of an ...
2
votes
1answer
106 views

can /usr/src be a sym link?

I want to store all source code of programs I have installed in /usr/src. However, due to size of the drive I made a sym link /usr/src that points to ~/src. That was nice. Unfortunately, that caused ...
1
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2answers
4k views

__modver_version_show undefined error when building linux kernel 3.0.4 version

I tried to build the linux kernel 3.0.4 on ubuntu 11.10 in virtualbox. Here are my steps: Download the source code tar xjvf linux-source-3.0.0.tar.bz2 cd linux-source-3.0.0 make menuconfig, changed ...
0
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1answer
3k views

Where to get the network NIC's firmware rtl_nic/rtl8105e-1.fw?

Im installing Debian testing version wheezy on my Asus X53Sc with Intel Centrino Wireless-N 100. Im having a problem with my wifi connection. When I try to connect to internet with the wireless ...