Use this tag for questions about loading, configuring, or compiling them. See also /drivers for questions about which modules to use for specific hardware. A kernel module is a bit of code that can be added into the kernel by the administrator while the system is running, typically providing one ...

learn more… | top users | synonyms

1
vote
0answers
47 views

CPUFreq Kernel module

I would like to try the CPUFreq module on my board (Marvell Soc based on ARMv7 running a v3.15 linux kernel). My architecture is obviously not supported by the default source code (located in the ...
1
vote
1answer
494 views

Which kernel module name is currently correct “usb-storage” or “usb_storage”?

I have found a number of examples how to prevent a kernel module from being loaded. One of them is about USB storage module. The next code has been provided: echo "blacklist usb-storage" | sudo tee ...
1
vote
1answer
298 views

unrecognized inateck hdd enclosure with linux Mint

I have put in a Hitachi 2.5 inch hdd inside a Inateck hdd enclosure. I have connected the enclosure to a Toshiba R630-156 using a usb2 cable on a usb3 enclosure port. I can hear and feel the hard ...
1
vote
0answers
420 views

How to get an Wacom Intuos CTH-480 to work under Easy Peasy 1.6 (Ubuntu 10.04)?

Is there any way to make a Wacom Intuous CTH-480 work under Easy Peasy 1.6 (Ubuntu 10.04)? I have installed the Wacom Driver files according these instruction, replacing 3.7 with 2.6.30, as Easy ...
-2
votes
2answers
33 views

Check multiple files with string

i.e. for each .csv file, do the following: Check if the file contains the string “HEADER” in the first line. If its missing, do the following: Display, “ERROR: Missing HEADER record for ” Rename ...
1
vote
0answers
64 views

Opensuse remove kernel module

I recently installed OpenSuse. I have a problem with the mouse left click. I had the same problem in Debian but when I removed the psmouse module everything started working perfectly. I tried the same ...
2
votes
0answers
158 views

How can I set up an offbrand display link (Trulink) to work with arch linux?

I recently bought a USB to DVI adapter and it works great in Windows. However, I wanted to use it on Arch since that's where I do most of my work. Unfortunately it doesn't work. I've installed all ...
2
votes
1answer
305 views

kmod-staging-3.14* on Fedora 19?

I use Fedora 19 (Schrödinger’s Cat) on most computers as I prefer it over others (I probably would use Fedora 20 if I could have Gnome 3.8 plus a few other packages). My problem is that I use ...
2
votes
1answer
35 views

200+ instances for fglrx?

I was browsing the basic info about the modules that my kernel is currently using on a machine I have, and this piece of information pops up. $ grep fglrx /proc/modules fglrx 8085343 200 - Live ...
1
vote
1answer
368 views

From Python script to Kernel Module [closed]

So I have a python script that emulates an ESC_KEY on pin 17 (Raspberry Pi). #!/usr/bin/env python #Imports for Pins,input import RPi.GPIO as GPIO import uinput from time import sleep #Setup ...
2
votes
0answers
138 views

kernel build: why does 'make install' complain about missing modules?

I'm building a 3.2.x kernel on a RedHat Enterpise system. During 'make install' it takes a very long time and is complaining : ERROR: modinfo: could not find module xxx I assume its probing ...
2
votes
1answer
48 views

How to preserve .d files after kernel compilation?

I'm compiling third-party kernel modules. Their build system goes to /usr/src/linux-headers-[version] (of a custom kernel chroot) and runs make from there. I want to find out, which files - sources ...
3
votes
0answers
1k views

How to compile AMD Legacy driver on 64-bit kernel, Linux Mint 17 [closed]

I'm trying to get the legacy driver for my HD 2400 GPU but I had an error while it was building. I looked at this answer, and have the same result, in the driver manager is empty: ...
1
vote
1answer
189 views

Compress memory on low Ram VM

Is there a way to get out more out of your limited Ram on a VM? I have a VM running on a cloud hoster and try to optimize a quite low on RAM mashine. I heard, there is a way to compress parts in the ...
1
vote
0answers
191 views

CPU usage by kernel modules, routing and forwarding rules

I have a system with a loopback kernel module installed. Through a bunch of routing and iptable rules, packets coming out of the loopback interface are sent over an ipsec tunnel. I am seeing that ...
1
vote
0answers
208 views

Adding IPVS to the kernel

I am trying to setup keepalived on a pair of VPS load balancer servers. I have hit the road block of IPVS not being included with the kernal. IPVS: Can't initialize ipvs: Protocol not available I ...
1
vote
2answers
364 views

Library routines in linux kernel

In the linux kernel, there is a section "Library routines" with a snippet shown below: Library routines ---> <M> CRC-CCITT functions <M> CRC ITU-T V.41 functions <M> CRC7 ...
4
votes
2answers
8k views

VirtualBox: modprobe can't find vboxguest, vboxsf, vboxvideo

I've been following these instrctions to install the guest packages for arch linux. Unfortunatelly modprobe returns: [snooc@archfire ~]$ modprobe -a vboxguest vboxsf vboxvideo modprobe: WARNING: ...
1
vote
2answers
173 views

Is this kernel warning a major problem that needs my attention?

Our Linux based Thecus N12000 NAS recently experienced this message in its dmesg log. [2014-05-21 11:34:56] ------------[ cut here ]------------ [2014-05-21 11:34:56] WARNING: at ...
1
vote
0answers
241 views

Kconfig - compiling kernel module

I stumbled over this site about USB video grabber under Linux, I'm trying to compile the code found here. I have read about makefiles but this one confuses me, cause it's so short: usbtv-y := ...
0
votes
1answer
117 views

Why does kernel-devel contain so many “empty” directories?

I have been a Windows kernel developer for many years. Now I start to develop Linux kernel modules. To begin with, I installed kernel-devel under /usr/src/kernels/$(uname -r). However, after checking ...
0
votes
1answer
584 views

custom kernel and firmware loading

After I have compiled my kernel, and when I type make modules_install, not only are the modules copied into /lib/modules/ but also firmware is copied into /lib/firmware/. The following is the end of ...
0
votes
1answer
617 views

set permission 0666 on /dev files at boot time

I have to load a few additionals modules. One of them generates /dev/knem file. I have to set the permission to 0666, so a basic chmod 0666 /dev/knem works, but I would like to assign it directly at ...
1
vote
2answers
96 views

CONFIG_PPP_MPPE=m vs CONFIG_PPP_MPPE=y

What is the difference between 'm' and 'y'? I am reading a guide, and the first step is to make sure that my kernel supports PPP and MPPE. It should be: # cat /boot/config-`uname -r` | grep G_PPP= ...
1
vote
0answers
343 views

Can only initialize Ad-hoc mode after restarting iwlwifi mod and network manager

I am running Ubuntu 12.04.4 with network interface: *-network description: Wireless interface product: Centrino Advanced-N 6235 vendor: Intel Corporation ...
2
votes
2answers
1k views

FATAL: Module hello.ko not found

I'm using CentOS-6.5 and default kernel is 2.6.32-431.11.2.el6.x86_64. I downloaded 2.6.32 and built that kernel (under /lib/modules/2.6.32). I wrote a module for simple hello world program. This ...
0
votes
1answer
336 views

Do I have to compile the kernel every time, even for a small change?

In my project I configure the kernel (2.6.32) in block/ioctl.c. We all know that kernel compiling and building takes few hours. Even for a small change, I'm compiling from scratch. So is there any way ...
2
votes
3answers
246 views

Placement of kernel binary and sources for kernel module building?

I'm trying to setup an environment for kernel module development in Linux. I've built the kernel in the home folder and would like to place the sources and binaries to the correct place so include ...
6
votes
1answer
12k views

Unable to load module: Disagrees about version of symbol module_layout

Following this tutorial to write my first driver. The Makefile is: # Makefile – makefile of our first driver # if KERNELRELEASE is defined, we've been invoked from the # kernel build system and can ...
1
vote
1answer
1k views

Loading module 8192cu fails

I 'm running Angstrom Linux (3.0.7) on embedded device BeagleBoard-xM. I want to load a module (downloaded from here) and copied into: /lib/modules/3.0.7/kernel/drivers/net/wireless/rtlwifi/8192cu.ko ...
4
votes
1answer
3k views

usb kernel module does not load on demand but works fine with insmod and modprobe from the shell

I have a USB Linux Kernel module that compiles and builds. Running insmod loads my module and dmseg and tail -f /var/log/debug shows me it works as expected. Running depmod -a then modprobe from the ...
0
votes
1answer
493 views

User id in kernel module [closed]

I'm trying to intercept clone system call so that i could print user id and process id before actual system call executes. I am using get_user_id()->uid to access user id in kernel module but it ...
6
votes
1answer
3k views

How to build a custom kernel with localmodconfig that support hardware of multiple machines?

When configuring a server to run a single task, like an appliance, there might rise the need to build a custom kernel. For example to save disk space. Ubuntu Core 13.10 amd64 root filesystem is a ...
1
vote
1answer
723 views

What is the purpose of kernel module dm_mirror a.k.a. dm-mirror?

When running an $ lsmod command, the output lists: dm_mirror 21715 0 dm_region_hash 15984 1 dm_mirror dm_log 18072 2 dm_region_hash,dm_mirror I have tried to ...
0
votes
1answer
638 views

Auto-load B43 wifi card module in Arch Linux

I am using a Dell Vostro 1500 (looking to buy a new computer) and I have installed the wifi drivers with b43-fwcutter or whatever the actual name of it is, but you probably know what I'm talking ...
1
vote
0answers
170 views

Looking for a list of modules that are used during boot sequence

I'd like to use deferred init calls. This function allows to load modules in userland, that should actually be loaded during the boot sequence. Just for testing I'd like to modularize as many entries ...
0
votes
3answers
352 views

On petalinux, lsmod does not work

I have seen that when I do lsmod in petalinux , I get "not tainted" message. Is there any alternative for lsmod then ?
6
votes
2answers
6k views

BSD Kernel Vs. Linux kernel? [closed]

I wanted to know in technical terms; what is the difference between BSD Kernel and Linux Kernel. In Linux, we can download the source kernel then patch it and make and make modules it. Even we have ...
17
votes
1answer
10k views

Linux: What is a tainted kernel?

Under certain conditions, the Linux kernel may become tainted. For example, loading a proprietary video driver into the kernel taints the kernel. This condition may be visible in system logs, kernel ...
3
votes
2answers
299 views

Using multiple layer of kernel modules for interfacing a hardware device?

I am trying to get a conceptual understanding of the purposes the kernel modules can have. The motivation for this question was a realization that interface to an actual hardware goes through multiple ...
1
vote
2answers
1k views

Blacklisting won't work for kernel module “radeon”

I tried to blacklist kernel module "radeon" as it is classhing with my propietary drivers. I tried it doing it in two ways but none of them worked and every time command mkinitcpio -M will list ...
2
votes
2answers
2k views

lsmod outputs: Not tainted [duplicate]

I ran lsmod command on an emulator for a board, and the output is Not tainted . What does that mean ?
2
votes
1answer
230 views

Debian 6 NDISwrapper doesn't install correctly

I'm using Debian 6. I've been trying to set up the Netgear N300 WiFi (model number WNA3100) adapter but haven't been successful. The Ndiswrapper was installed from .deb packages which I downloaded on ...
1
vote
1answer
1k views

How to regenerate initramfs so it can include bcache module?

Eventually I have converted root-fs into bcache (with the help of blocks). I skipped the step update-initramfs -u -k all because I've been using bcache on other partitions for some time, and I've ...
2
votes
0answers
308 views

RNDIS Server to make a computer as a peripheral

First of all my goal is this, have a computer as a peripheral device to connect it to anyone's computer with ssh protocol or web. The idea is doing this by using a plug and play USB cable . Facts ...
0
votes
0answers
196 views

How to disable PAE feature of kernel, after installation?

I am using RHEL 5.3(x86) as a base platform for my development purpose.My machine's spec is as follows: Intel, Core-i3 Processor @ 2.5GHz 4GB RAM Problem is whenever I am attempting to install the ...
1
vote
1answer
2k views

Install kernel module [V4L2]

In order to build and install V4L2 module, do I have to download it, or it is already part of the kernel (and all I have to do is to choose it, in order to build it, via kernel configuration)? I 'm ...
1
vote
0answers
78 views

kernel 3.1x and optimus support

I have encountered a negative observation regarding bumblebee. Namely, using optirun the performance of the GPU seems to be an order of magnitude lower than it should be. To be more specific: I have ...
0
votes
1answer
67 views

How to install kernel sources

I 'm running Angstrom distribution (console only) on BeagleBoard-xM. Image was build on Narcissus, with Bootloader Files (x-load/u-boot/scripts) added. I noticed that usr/src directory is empty. I ...
1
vote
1answer
407 views

Attaching two network cards two different drivers

I have an Ubuntu 12.04 server that has two 10 Gb ethernet cards that are using the ixgbe driver. I'm installing the PF_RING DNA drivers for these cards (what that is isn't important). I want interface ...