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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3k views

WiFi not working - wlan0 FAILED

My Arch (3.6.5-1) is exhibiting a rather peculiar problem: when wifi is set up, all logs indicate that the setup was successful and that the interface is up and functional. However, when attempting to ...
3
votes
0answers
500 views

How to load HID kernel module from the kernel command line?

While upgrading a server from kernel 3.2.9 to kernel 3.5 I had a problem with the network (ifconfig eth0 up won't work) so I updated the system to get a newer userspace, but in the process something ...
2
votes
0answers
19 views

How do I compile DKMS module for multiple kernel image versions in Debian?

I have versions 3.16 and 4.0 of linux-image package installed. During login I can select which kernel I want to boot in the "advanced options" menu item. However, when I install a DKMS module it is ...
2
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0answers
30 views

How to work with a kernel one has no information about?

I'm working with a system to automatically assemble Live CDs. It came packaged with a kernel (seemingly based on 3.13.11), that has been working without problems so far. I noticed that, when I try ...
2
votes
0answers
32 views

Disable backlight device

I have two backlight devices in /sys/class/backlight: toshiba and intel_backlight. The former works only before I put my laptop on sleep and the latter works perfectly. ...
2
votes
0answers
45 views

Modeline for Dell U2415 1920x1200 resolution

I'm trying here to run my secondary display (U2415) on the native resolution 1920x1200. Xrandr unfortunately reports only 1920x1080, which is not satisfactory. $ xrandr Screen 0: minimum 8 x 8, ...
2
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0answers
23 views

Slackware won't ring my bell

I want to ring bell in bash I've set lsmod |grep pcs pcspkr 1987 0 xset b and finally echo -e \\a But no ring.
2
votes
0answers
72 views

Shell script for automated kernel compilation

I am trying to write a shell script to build a custom kernel on Arch Linux. I have succeeded to do write all the steps described in the Arch Linux kernel compilation page: ...
2
votes
0answers
108 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 ...
2
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0answers
72 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 ...
2
votes
0answers
83 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: ...
2
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0answers
1k views

How can I properly reload a kernel module?

Related Question I can't reload a kernel module for trying new flags. Example: thinkpad_acpi default is without fan_control=1. So if my computer runs really hot and the fans don't go to full speed it ...
2
votes
0answers
139 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
0answers
131 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
0answers
273 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 ...
2
votes
0answers
170 views

How can I automatically include all firmware needed by selected Linux kernel modules

I have certain modules which I need compiled into the kernel. Some of these modules require firmware, which used to be automatically included from /usr/src/linux/firmware/. However, no new firmware ...
2
votes
0answers
497 views

Debian Wheezy USB2 ehci_hcd

I have a friend who decided to switch to Linux from Windows. I was helping her to get up and running as quickly as possible but we ran into a problem which I can't seem to solve. She uses Debian ...
2
votes
0answers
327 views

How to configure buildroot to add a sound device?

I've used a given board configuration to reconfigure it for my individual board. My board has a CS4270 sound device of Cirrus Logic. My uImage is booting successfully on my target hardware, but an ...
2
votes
0answers
132 views

How to find where driver.mod.c links to?

I'm trying to port the webcam composite gadget from kernel 2.6.37 to 2.6.32. I don't have a choice on this since I depend on other drivers and a SDK which only compile for this version. My train of ...
1
vote
0answers
35 views

Autoloading externally compiled module at hotplug event

I have a pretty outdated embedded linux driven system with v2.6.33.7 kernel, which came without USBNET and CDC_ETHER modules. I compiled those modules to be able to attach a certain USB-LAN stick, ...
1
vote
0answers
40 views

Xen Kernel - SCSI_WAIT_SCAN Module

We've recently deployed a HP ProLiant DL180 Gen9 with 12 x Intel 530 SSD Drives. The system is running RAID-10 on top of HP Smart Array P840. Our aim was to use Xen on this server. However, when the ...
1
vote
0answers
15 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
0answers
1k 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
0answers
26 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 ...
1
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0answers
89 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
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0answers
102 views

How are network and SCSI kernel modules handled differently from other kernel modules?

I used modprobe to load the 8021q.ko module on a server. I expected to have to do this every time the server rebooted until I made it persistent. However, to my surprise, it was loaded automatically ...
1
vote
0answers
597 views

vboxdrv kernel module

I'm just install virtualbox and when i try to launch the program from the terminal i got this error #virtualbox WARNING: The character device /dev/vboxdrv does not exist. Please install the ...
1
vote
0answers
101 views

Failing to load a module on udev event

I have a pretty simple udev rule which is executed when a USB is plugged into my Debian machine: SUBSYSTEMS=="usb", KERNEL=="sd?", ACTION=="add", RUN+="/usr/local/bin/USB/t.sh \ %k" My t.sh is also ...
1
vote
0answers
136 views

Get KERN_DEBUG messages into syslog on rhel7/centos7?

I've been trying to get KERN_DEBUG messages logged to a file in centos7, but have had no luck. I can get them just fine from "dmesg," but not /var/log/messages or /var/log/dmesg Here's a MWE kernel ...
1
vote
0answers
73 views

“disagrees about version” message

I get a message "disagrees about version" on boot time, after compiling kernel and modules with KGDB. Why should this happen ? Is there any problem with KGDB ? This is the relevant log at boot: ...
1
vote
0answers
100 views

What does __ prefix before some kernel api's convey?

Why do some function calls in kernel specially have this prefix __ example: __init initialization(void) is __init a macro? What does this convey? Are these a special class of function calls inside ...
1
vote
0answers
38 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
0answers
372 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 ...
1
vote
0answers
56 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 ...
1
vote
0answers
166 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
156 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
0answers
207 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 := ...
1
vote
0answers
293 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 ...
1
vote
0answers
152 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 ...
1
vote
0answers
161 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
0answers
76 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 ...
1
vote
0answers
646 views

I can't find tape device file inside /dev directory

I'm using tape storage drive HP LTO3 1x8 auto-loader which is connected to my server running CentOS. it is detected in CentOS correctly. cat /proc/scsi/scsi Host: scsi2 Channel: 00 Id: 01 Lun: 00 ...
1
vote
0answers
87 views

What are the generic-pae directories in /lib/modules?

When listing the content of the dirctory /lib/modules I see a list of generic-pae directories (Ubuntu 12.04): drwxr-xr-x 4 root root 4096 Apr 23 2012 3.2.0-23-generic-pae drwxr-xr-x 5 root root ...
1
vote
0answers
77 views

Decreasing mouse sensitivity at kernel level

I have developed a custom-GUI Server, which runs on virtual console of Linux.For mouse-handling purpose, it reads the mouse device file /dev/input/mice and retrieves the event data and updates ...
1
vote
0answers
363 views

How to load kernel module in Chromium OS?

I've installed the Chromium Vanilla by Hexxeh to a USB drive, but I can't use it on my computer because it lacks the carl9170 driver, which is needed by my adapter (a D-Link DWA-160.) I've managed to ...
1
vote
0answers
190 views

after enabling Xinerama (in AMD condor Dual-Head Graphics Card) the system graphics hangs

I have a problem in my AMD Condor Dual-Head Graphics Card When I enable Xinerama from "System → Preferences → AMD Catalyst Control center (Administrative)" my RHEL Server 6.3 (x64) Graphics hangs. ...
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vote
0answers
617 views

Busybox `uname -r` shows wrong kernel version

My kernel is 3.2.27 and /lib/modules/ contains 3.2.27 + folder. But when I am using /# uname -r 3.1.9+ It's showing a strange output. My problem is that for modprobe depends on uname when I put ...
1
vote
0answers
914 views

iptables not starting up

I have inherited a custom built Linux kernel 2.6.30.9 and am just upgrading the underlying OS from RHEL 5.4 to 5.8 (kernels 2.6.18.164 and 2.6.18.308 respectively). When booting, the following is ...
1
vote
0answers
713 views

I can't find my tape library changer under centos 5 with a quantum scalar i40

i have a quantum scalar i40 connect on a centos 5 machine trough SAS interface. I fight with it since a while because the media changer does not work. I finally understood yesterday that the system ...
1
vote
0answers
480 views

systemd-modules-load print errors when loading builtin kernel modules

I'm running Arch Linux, it uses systemd-modules-load to load modules configured in /etc/rc.conf, but since I use a custom kernel and lts kernel, I had to put all possible modules in that config file ...