Questions tagged [kernel-modules]
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 feature such as a filesystem.
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Debian does not detect serial PCI card after reboot
I have installed a PCI card with two serial and one parallel port on it. the chipset is MCS9865. I downloaded the latest driver(V1.0.12) from here. I ran make and make install. now the two serial ...
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What is a tainted Linux 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 ...
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Find out which modules are associated with a usb device?
Could you recommend a way to figure out which driver is being used for a USB device.
Sort of a usb equivalent of lspci -k command.
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Are driver modules loaded and unloaded automatically?
On Ubuntu 14.04, I found that when I don't plug in my external wireless adapter, its module rt2800usb is still shown in lsmod.
when does automatically loading a driver module happen? Is it when the ...
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14
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How to unload kernel module 'nvidia-drm'?
I'm trying to install the most up-to-date NVIDIA driver in Debian Stretch. I've downloaded NVIDIA-Linux-x86_64-390.48.run from here, but when I try to do
sudo sh ./NVIDIA-Linux-x86_64-390.48.run
as ...
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6
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What is the difference between kernel drivers and kernel modules?
When I do a lspci -k on my Kubuntu with a 3.2.0-29-generic kernel I can see something like this:
01:00.0 VGA compatible controller: NVIDIA Corporation G86 [Quadro NVS 290] (rev a1)
Subsystem: ...
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How to find the driver (module) associated with a device on Linux?
On Linux, given:
a device, for example /dev/sda,
and its major and minor numbers, for example 8, 0,
how can I know which module / driver is "driving" it?
Can I dig into /sys or /proc to discover ...
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Determining cause of Linux kernel panic
I'm running an Ubuntu 12.04 derivative (amd64) and I've been having really strange issues recently. Out of the blue, seemingly, X will freeze completely for a while (1-3 minutes?) and then the system ...
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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 do I list all the ...
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How to assign USB driver to device
This question is two-fold:
First, how do you manually detach a driver from a USB device and attach a different one? For example, I have a device that when connected automatically uses the usb-...
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How to block drivers built-into Kernel, i.e. drivers who are not a module
I configured and compiled Linux kernel with nouveau driver built-into kernel, i.e. with <*> as opposed to <M> when doing make menuconfig inside Linux kernel source directory.
Now, I ...
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What is the sequence loading linux kernel module on startup? How priority is set to them?
I have a Linux kernel module which I compiled dynamically. How is it added to startup? There are lot of .ko files in /lib/modules. How is priority set for loading these modules?
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Are Modules listed under /sys/module all the Loaded Modules?
I'm wondering if I can use the directory listing of /sys/module instead of lsmod to get a list of currently loaded modules.
Is that the list of loaded modules only? Or maybe that combined with /sys/...
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Debian Jessie Wireless Driver Broadcom Restart (rmmod modprobe) BCM43142 [14e4:4365]
My Dell laptop, running Debian 8 (Jessie), has this wireless device:
$ lspci -nn -d 14e4:
02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
And it ...
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systemd: automate modprobe command at boot time
My distribution is Fedora 17 Gnome.
Every time I reboot/restart my computer I need to run this command as root:
modprobe rt2800usb
How can I make it permanent?
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Is USB-to-USB data transfer between two Linux OSes possible?
I want to create a USB-to-USB data transfer system in Linux (preferably Ubuntu). For this I want to use no external hardware or switch (except this cable). It's going to be like mounting a USB drive ...
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WSL 2 does not have /lib/modules/
I have the source code of a hello world kernel module that works in Ubuntu 20 in a laptop.
Now I am trying to compile the same code in Ubuntu 20 but inside WSL2. For that I am using this:
make -C /sys/...
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1
answer
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How to disable keyboard?
Without unplugging my keyboard I'd like to disable it from the terminal; I was hoping that this could be done using rmmod but based on my currently loaded modules it doesn't look like it is possible.
...
user26053
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Kernel module blacklist not working
I'm trying to figure out how to blacklist modules, and I'm trying it on the USB storage. Unfortunately it seems to have no effect, and I get the module in even if it's not used (apparently).
My ...
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1
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Custom kernel: fails to load firmware when module built-in
I'd like to have all my modules built-in, but this fails with iwlagn:
iwlagn 0000:03:00.0: request for firmware file 'iwlwifi-6000-4.ucode' failed.
iwlagn 0000:03:00.0: no suitable firmware found!
...
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Cannot compile kernel: error, kernel does not support PIC mode
I have troubles recompiling my Kernel. Downloading the source package, decompress it and running
fakeroot make-kpkg kernel_image
leads me to the error
[...]
CHK include/...
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2
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How much strip(1)-ing is okay for kernel modules?
I regularly create packages for Slackware Linux and part of the process is stripping binaries so that they take up less space. I find that if I strip --strip-all (or strip with no options) kernel ...
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How to remove kernel module if it's still in use?
[rootSERVER ~]# rmmod -f cifs
ERROR: Removing 'cifs': Resource temporarily unavailable
[rootSERVER ~]# modprobe -r cifs
FATAL: Module cifs is in use.
[root@SERVER ~]# lsb_release -a
LSB Version: :...
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1
answer
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Compile Linux kernel module without Module.symvers
I have this embedded Linux devices. I would like to add kernel-level functionality to it, but would highly prefer not to compile my own kernel to do so. (If the kernel doesn't load and get to user ...
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2
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Can I detect if my custom made kernel was built with module support?
I have been provided with a vendor supplied minimal linux installation. From an answer to a previous question I discovered that it is possible to build a kernel with or without module support. I have ...
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2
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Prevent usbhid from claiming USB device
Directly related: Prevent claiming of novelty usb device by usbhid so I can control it with libusb?
I want to access an RFID reader (works as HID device) from a program that uses libusb-0.1. In the ...
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Sign Kernel Modules
So i am on a debian buster 10 system and i installed virtualbox and i encountered an error which tells me to load some kernel modules manually.
sudo ./vboxconfig
[sudo] password for user:
vboxdrv.sh: ...
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Excluding kernel modules through /etc/modprobe.d/blacklist.conf does not work
I don't want to load the kernel module nouveau on my debian box at startup, so I put the following in /etc/modprobe.d/blacklist.conf:
blacklist ttm
blacklist drm
blacklist nouveau
I even did a ...
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2
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Booting without initrd
Is it possible to boot linux without a initrd.img ? I am planning to add default drivers as a part-of-kernel itself and avoid initrd completely.
What are the modules that should be made part-of-the-...
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What is iwlwifi's "lar_disable"?
I'm seeing a lot of posts reference lar_disable like this one for instance. I'm wondering what it does. modinfo iwlwifi just says,
parm: lar_disable:disable LAR functionality (default: N) (...
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How to make EDID
I read the post here and I tried to make do with what I understood from the post but here are some questions:
Where is the /lib/firmware located in for example /usr/src/linux/lib/firmware or /usr/lib/...
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Make Apple Keyboard Settings persistent in ../hid_apple/parameters/
i'm running Ubuntu 16.04 LTS and want to use an apple keyboard (wired). No i'm facing some problems whith making my custom settings permanent. I'm using the 'English internationl, AltGr dead keys' ...
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r8169 stops working after a while
This issue appeared after the CentOS installation.
Server becomes unavailable completely neither through ssh nor through smb protocol.
It happens randomly and there is no exact regularity. It can ...
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2
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Why Linux module API isn't backward compatible?
Why isn't the Linux module API backward compatible? I'm frustrated to find updated drivers after updating the Linux kernel.
I have a wireless adapter that needs a proprietary driver, but the ...
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1
answer
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Am I making invalid assumptions with regard to my kernel module's shared memory?
I have written a "device driver" (see source code here: https://bitbucket.org/wothke/websid/src/master/raspi/websid_module/ ) that runs fine for most of the time (see https://www.youtube.com/...
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What ELF types do kernel itself and kernel modules have?
https://linux-audit.com/elf-binaries-on-linux-understanding-and-analysis/
says
The type field tells us what the purpose of the file is. There are a
few common file types.
CORE (value 4)
DYN (...
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1
answer
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Want to install VirtualBox Guest Additions on CentOS 7 but get a header mismatch
I try to install VirtualBox Guest Additions on a CentOS 7 VM.
I installed the prerequisites via
sudo yum install perl gcc dkms kernel-devel kernel-headers make bzip2
then I "inserted" the Guest ...
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1
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How do I fix a "module not found" error?
I want to get a bluetooth-usb-stick running.
In the terminal, I enter sudo modprobe btusb,
but the output is: FATAL: Module btusb not found in directory /lib/modules/5.11.0-25-generic.
I am on a ...
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2
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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 ...
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Barely any commands work, no module named 'apt_pkg'
I don't know what I've done but basic commands like "ls" and "sudo" no longer work and now throw me this error message.
File "/usr/lib/command-not-found", line 28, in <module>
from ...
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1
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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 ...
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2
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How to restart a failed amdgpu kernel module
My video card crashes from time to time. It's quite annoying but I live with it -- usually I just restart the graphics with sudo systemctl restart lightdm.service, or if needed reboot the whole system....
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Is "update-initramfs -u" needed after adding or removing a module with "modprobe"?
Most instructions that I find online about adding or replacing kernel modules in Ubuntu only mention modprobe and rmmod. However, according my experience with e1000e, the modification is reverted ...
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How do I disable I2C Designware support when it's not built as a module?
I have an Alienware Aurora R7, running Arch Linux. On shutdown, the kernel panics, with something like this in the panic message (omitting timestamps):
BUG: Unable to handle kernel NULL pointer ...
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11
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1
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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 ...
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1
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Sound not working when both the sound card and HDMI use the Intel HDA driver. How to exchange their device loading order?
I have an Acer Aspire One 522 netbook which has an Intel HDA sound card based on the Conexant CX20584 chipset. Although KDE does output sound when starting up, flash and probably many other apps which ...
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Get all ioctl code and which module they map
By doc. , ioctl signature is int ioctl(int fd, int request, ...) . request is the code of ioctl.
Is there any way to know what are all the possible ioctl request code that available in my linux? And ...
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1
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Calling Linux kernel methods from a kernel module
What is the right way of calling kernel functions in a C file from a kernel module in Linux?
I want to call exit_task_namespaces in linux/nsproxy.c from my first ever kernel module
I am doing this:
#...
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2
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lsmod shows -2 in the “Used by” column
This is what happens when i run lsmod on an arm board (banana pi) running on kernel 4.3.0
# lsmod
Module Size Used by
async_raid6_recov 1434 -2
async_pq 5548 -...
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Automatically apply module patch and compile kernel when updated?
I've recently applied a one-line patch to drivers/bluetooth/btusb.c in order to enable compatibility with my Bluetooth device. However, whenever I get a kernel upgrade, the patch will be lost until ...
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