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 ...

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1answer
16 views

How do I install freeBSD headers ?

I have been a arch linux user for the past 2 years and now moving on to freeBSD for kernel development. I have install freeBSD and want to compile a dynamically loadable kernel module for freeBSD. ...
1
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0answers
9 views

Fair traffic classification using TC

I want to apply a qdisc I developed on myself (quite similar to netem. Think netem.) to several IP-addresses using the filter classifier. No problem this far, I could do so using the prio qdisc or HTB ...
1
vote
1answer
28 views

web cam starting hangs os

I faced a strange effect as ... when my notebook wakes up from suspend I can start and close my web cam with guvcview 1-3 times; But after while on 3dr or 4th starting attempt (I didn't count for ...
2
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0answers
60 views

Do I have a dead NIC?

OK so this is kind of a long one due to command output. Not necessarily in complexity as I'm only showing some basic t-shooting so any feedback would be appreciated. Basically, I have a fairly new ...
0
votes
1answer
48 views

lsmod lists only one single module, no other modules available to load, how do I proceed?

The system debian wheezy, platform ci20, stock imagination kernel 3.0.8. the output of lsmod lists only one module, pvrsrvkm, which is the "out of tree graphics driver" by imagination. The problem ...
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0answers
240 views

How to install Realtek RTL8723BE wireless driver on debian?

I installed Debian Wheezy 7.8 on a Lenovo G50-70 x64, it seems that I don't have the driver for my wireless card installed, the output of iwconfig: lo no wireless extensions. eth0 ...
1
vote
1answer
59 views

Loading kernel modules that were compiled for another kernel failed

I want to load kernel modules, ip_gre.ko and gre.ko, on a embedded-device running embedded-linux to make that device to support GRE protocol. Since I do not want to change Embedded-linux device's ...
1
vote
1answer
44 views

What's the difference of `/etc/modules-load.d` and `/etc/modules`?

I red the introduction of them and found that, they both deal with module loading during boot time. So, what's the difference of these two different configuation ways?
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0answers
20 views

Compiling a loadable kernel module(Debian/Ubuntu)

This question is a follow up of this one. I am trying to compile the ELF loader as an individual LKM and use it as a standalone application(replacing the original module within the base kernel sounds ...
1
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0answers
36 views

Compiling a loadable kernel module outputs several warnings about undefined functions [closed]

This question is a follow up of this one. I am trying to compile the ELF loader as an individual LKM and use it as a standalone application(replacing the original module within the base kernel sounds ...
2
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0answers
39 views

How to insert a modified ELF loader given the current ELF loader is present?

I need to modify the ELF loader's kernel implementation of an Ubuntu 14.04 distribution. Having downloaded the sources using: sudo apt-get source linux-image-$(uname -r) I ran the configuration ...
0
votes
1answer
17 views

Sunix Low Level Parallel port driver not working

Background: I am currently in the process of updating a Industrial PC + software from Debian 4 (etch) to Debian 7 (Wheezy) due to hardware obsolescence, one of the few pieces of hardware being shared ...
1
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0answers
9 views

Issue with network up/down in kernel [migrated]

I am trying to write a Linux kernel module that with the correct command, will bring down the the network interface (lets say wlan0) change its IP address to the one specified, then bring the ...
0
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0answers
8 views

Stability of internal Wireless module or adpater in Ubuntu

This is an update to my previous problem with wireless adapter or module in Ubuntu 12.04. Now when I move my laptop around a little, the wireless connection is lost but very quickly back on (update: ...
0
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0answers
7 views

pr_debug not giving any output [migrated]

I have a loadable kernel module and its init is as given below static int __init id_init(void) { struct identity *temp; /* some code which is not relevant to the question */ temp = ...
0
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0answers
21 views

How do I install the `uvcvideo` module on Android 4.4.2

Setup UDOO QUAD Android KitKat 4.4.2 SD image Microsoft LifeCam Cinema Problem Android 4.4.2 SD Image is configured to use the CSI camera. To use USB camera you need to recompile kernel and ...
0
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0answers
23 views

Is it safe to upgrade kernel manually on a system which is using NVIDIA drivers?

Upgrading kernel manually on Ubuntu 14.04 can cause trouble with NVIDIA drivers? (one of the troubles could be booting to black screen) I had lot of trouble with installing NVIDIA graphics drivers ...
0
votes
1answer
32 views

Trying to make a Universal Makefile

I'm working on my own netfilter module for the first time. According to internet documentation, The simplest module contains the following C code: //'Hello World' kernel module, logs call to ...
0
votes
1answer
35 views

Few questions about system calls and kernel modules (kernel services in parallel)

I have few questions about system calls and kernel modules. Let's assume we have two applications (A and B) and each of them is running on a different core. (A-CPU 0, B-CPU 1) When two applications ...
2
votes
1answer
53 views

modinfo when a module was compiled into kernel statically wouldn't work — workarounds?

modinfo is rather useful tool when it comes to tweaking module's parameters (at least discovering what options are availalbe), for e. g.: $ modinfo dummy filename: ...
0
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2answers
80 views

Buildroot - missing i2c kernel modules

I've used Buildroot to build a minimal operative system. During the configuration step with the menuconfig utility I specified to install I2C tools. The option was is Target Package -> Hardware ...
4
votes
1answer
41 views

How to list all loadable kernel modules?

I'm looking for a few kernel modules to load i2c-dev and i2c-bcm2708. But the modprobe command returns: sudo modprobe i2c-dev modprobe: module i2c-dev not found in modules.dep How can I list all ...
1
vote
1answer
103 views

Compiling kernel but doesn't build kernel modules

I am trying to compile a linux-sunxi kernel for my Banana pi. Using this link: http://sunxi.org/Linux_Kernel#Compilation Unfortunately I am getting the following message at the bottom when I am ...
1
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0answers
22 views

Kernel compilation for minimum program execution

Compiling the Kernel requires me to configure modules. I am unsure how to configure a Kernel which only supports following things: Programs compiled with gcc on other machines (glibc). I want to run ...
2
votes
1answer
42 views

What is /proc/filesystems supposed to be and why is it different from /lib/modules/linux_ver/kernel/fs?

The very little documentation about /proc/filesystems says it is a "list of supported file systems". I see a lot of file system modules in /lib/modules/linux_ver/kernel/fs, most of which do not appear ...
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0answers
66 views

Using usbserial kernel module on Fedora 21

Currently using Fedora 21 uname -r 3.17.8-300.fc21.x86_64 I have a thermal printer which connects using RS232 and has a cable which can be connected to a USB port. When I connect this device, ...
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0answers
42 views

keyboard still working after calling free_irq(1, NULL);

I'm developing a kernel module which free the IRQ number 1 in order to disable the keyboard in Intel architectures. according to wikipedia the IRQ 1 is used for keyboard. but after building and ...
0
votes
0answers
67 views

intel_agp kernel module not found

I trying to use intel embedded HD 4400 graphics. As best as I know, it's need to load i915 kernel module (and the kernel module loader also try to load it) without success because it's depends from ...
0
votes
0answers
38 views

Trying to understand the wacom tablet plugging in usb causes kernel panic

First, I realise that askubuntu exists, but a kernel panic is probably more GNU/Linux (kernel and low-level system programs) than distro specific. So I already have a solution to mitigate the kernel ...
0
votes
0answers
201 views

Broadcom driver on Kali Linux

I recently installed Kali Linux, switching from Scientific Linux. The only problem is my wireless driver, which doesn't want to install at all. lspci -nn | grep Net : 02:00.0 Ethernet controller ...
0
votes
1answer
67 views

How to add an alias to a kernel module?

I'd like to add an alias to a kernel module, e.g. make nvidia-343 available as nvidia on Ubuntu 14.10 with Linux 3.18.1, so that it can be loaded under the alias name and so that the alias appear in ...
0
votes
0answers
109 views

Linux driver (module) won't load at boot time although installed with depmod

Environment FriendlyARM mini210s Netis dongle Linux 3.0.8 [root@mini210s 3.0.8-FriendlyARM]# uname -r 3.0.8-FriendlyARM Goal I want to network the mini210s using the wireless Netis wf2190 ...
1
vote
2answers
222 views

How do compile Linux Driver for Netis WF2190 Wifi dongle for FriendlyARM mini210s?

GOAL I want to install the Netis WF2190 wifi dongle linux driver onto my FriendlyARM mini210s. Environment FriendlyARM mini210s S5PV210 ARM Cortex-A8 Board ... running Linux 3.0.8-FriendlyARM ...
2
votes
1answer
234 views

linux 3.17 supports hotplug of thunderbolt of non-chained thunderbolt devices — what is this?

Linux 3.17 has a commit which supports hotplug of thunderbolt of non-chained thunderbolt devices. But what does "non-chained thunderbolt devices" mean? Is a thunderbolt to ethernet adapter a chained ...
2
votes
0answers
49 views

How can I find which module driver holds of i2c address?

I want to communicate over a I2C bus using Python. But the address cannot be used because it is used by another driver. # i2cdetect -y 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: ...
1
vote
1answer
37 views

How do I find out which version of a driver is included in a kernel?

I need to find out which driver/module version is contained in a kernel which isn't installed. Is there a document in the source that contains this or something listed online that haven't been able to ...
1
vote
0answers
71 views

Which kernel option for “Intel 8 Series Chipset Family Thermal Management Controller”

My new machine works fine, but lshw shows the following unclaimed device: *-generic UNCLAIMED description: Signal processing controller product: 8 Series Chipset Family Thermal ...
1
vote
1answer
2k views

insmod: ERROR: could not insert module 8188eu.ko: Invalid module format

I'm trying to use the TL-WN725N as an USB WiFi-Adapter with Fedora 20. I followed these insructions and the adapter worked fine and even survived two updates during the last few weeks. Then I did a ...
0
votes
0answers
182 views

loading ath9k_htc kernel driver fails

could someone please point me in the right direction to get my external wireless stick (TL-WN722N) working on my Xperia Neo (haida) smartphone? So far I've done the following: I downloaded ...
2
votes
1answer
7k views

rtl8723be Realtek Wifi-Card driver not working on Ubuntu 14.04

I installed Ubuntu 14.04 on my new Lenovo G50-70. The wifi works perfectly in windows, however it behaves strangely on Ubuntu. It is slow, doesn't load heavier sites at all, and after a while, ...
0
votes
0answers
69 views

Debian Squeeze: TCP/ICMP stops working suddenly (R8169 Driver)

we suddenly see our NETWORKING stops (TCP/UDP/ICMP) in our client system. tcp: We tried reaching our server every 5 seconds.But , there was no connection establishment TCPDUMP REF: ...
2
votes
2answers
323 views

No build scripts available when compiling module outside of Linux source tree

I am attempting to build a basic module outside of the Linux source tree (3.18.0-rc6). When I build it, I get an error saying it couldn't find scripts/... My directory setup looks like this ...
1
vote
1answer
849 views

Debian Wheezy, issue connecting multiple monitors

I just recently migrated to Wheezy from Arch, everything has gone very well except I can't seem to get multiple monitors to work. Here is my setup: machine: Dell Latitude E6540 laptop graphics: ...
0
votes
0answers
62 views

custom built kernel module problems

I have been struggling to find a solution for loading module ath9k into the kernel and I have met a dead end. The kernel is 3.17.1 taken from kernel.org and I am compiling it in Ubuntu Trusty (14.04) ...
3
votes
3answers
1k views

cannot reconfigure virtualbox-dkms

I have installed vitualbox on Debian Jessie according to instructions on debian wiki. By running: apt-get install linux-headers-$(uname -r|sed 's,[^-]*-[^-]*-,,') virtualbox During installation ...
2
votes
0answers
67 views

How to determine the wordsize in Linux kernel programming? [closed]

In userspace code, the macro __WORDSIZE is used, included in <bits/wordsize.h>. However, when I do Linux kernel programming, the __WORDSIZE seems not available. If <bits/wordsize.h> is ...
1
vote
1answer
216 views

Kino error:WARNING: dv1394 kernel module not loaded or failure to read/write /dev/raw1394 on Fedora 20, dvgrab works

I want to import and work with my dv's which are from a SONY DCR-PC101E camcorder, I've installed alot of Video editing software on one of my systems, namely my Fedora 20 running on an old HP with ...
0
votes
0answers
66 views

Changing CPU frequency programmatically

I have seen that standard CPU Frequency driver(comes with default package with linux kernel) can change the CPU frequency at runtime, when being used under the supervision of "Ondemand" governor. ...
2
votes
1answer
217 views

Disable KVM Kernel Module while its still in use

In order to run a virtual machine, VirtualBox tells me to disable the KVM kernel module. I googled around and found out that KVM is included in the qemu-*-packages, but none of them is/was installed ...
0
votes
0answers
35 views

rtnetlink No such file or directory error For Red algorithm

I tried the following command on my Ubuntu 14.04 Virtual Machine: tc qdisc add dev eth0 parent 1:1 handle 10: red limit 400000 min 30000 max 90000 avpkt 1000 burst 55 ecn adaptive ...