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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How to force HDMI audio (intel card) to be enabled despite receiving broken EDID

The EDID sent by my monitor when directly connected to my graphic card is ok, I dumped it in /lib/firmware/edid/viewsonic.bin. I want to access my monitor through a KVM-switch, an HDMI-audio-...
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1answer
5k views

Trouble “activating” the SDIO Broadcom BCM43430 Wifi chip on Linux 4.8.0

I have an Intel Z3735F (Bay Trail) platform running a current 64Bit kernel 4.8. on UEFI32. From lines in dmesg and hwinfo I found, that on this particular device the on-board "Broadcom BCM43430 WLAN ...
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1answer
10k views

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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1answer
945 views

/usr/lib/modules getting deleted on boot

This is a fresh installation of Manjaro, installed using Manjaro Architect on an existing LVM partition inside a LUKS-encrypted partition and using a separate unencrypted boot partition. I've ...
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1answer
173 views

RAM Disk related questions [duplicate]

there is a developed kernel subsystem that needs a chunk of memory allocated to itself that only it could manipulate this chunk. this memory should be physically contiguous and also it need the access ...
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2answers
7k 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 ?
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1answer
1k views

FedUp, unable to upgrade to Fedora 20

I am upgrading my Fedora OS to the latest version 20 as the current one is nearing end of life. Fedora introduces a new upgrade method called FedUp that allows user to perform an upgrade over the ...
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1answer
1k views

Find out why linux kernel module was loaded

The debian backports 4.8 standard kernel loads the module fjes on my thinkpad T460s. How can I find out why this module is loaded, i.e. which hardware triggers loading this module?
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1answer
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Where can I find information on Linux device driver parameters?

I want to work on Linux module programming (Device Drivers). And as a my college project I have to do profiling or benchmarking of a kernel modules based on various parameters. Everywhere I looked, I ...
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1answer
16k views

rcu_sched detected stall on CPU

Seen multiple rcu_sched stall messages in a customer device and it gets crashed/hung. Under this condition, the device is not accessible via SSH or 3G. Kernel version is 3.2.54. "rcu_sched detected ...
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2answers
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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 ...
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2answers
139 views

Saving time while compiling Kernel

I have to demonstrate a practical where I have to make my own module, add this module to a kernel's source and implement the system call. I'm using 3.16 kernel on Ubuntu but it takes around 2 hours to ...
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2answers
8k views

How do I disable a kernel module persistently?

So I had this problem with my new Lenovo ThinkPad 13 where it did not resume from suspension and hibernation. After 2 days of troubleshooting I found out that apparently a module called intel_lpss_pci ...
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1answer
2k views

Signed kernel modules - “not signed with trusted key”

Issue: I'm trying to use signed kernel modules, but getting a failure for the insmod command: PKCS#7 signature not signed with a trusted key There is a potentially related error message during ...
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1answer
4k views

How to create Linux header for newly compiled kernel?

In Debian when I want to compile my kernel module I need to install linux-header-* package and then I need to write some makefile like this: obj-m := hello.o KDIR := /lib/modules/$(shell uname -r)/...
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1answer
512 views

Select which driver binds to a device

I have two different drivers for the same i2c device. Both drivers have the same string in their i2c module device table. One of the drivers is built into the kernel and the other was built as an ...
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1answer
943 views

Running a script every time a new kernel is installed

I'm currently having to recompile my wireless driver from source every time I get a new kernel release. Thinking it would be awesomely hackerish to automate this process, I symlinked my Bash build ...
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1answer
1k views

How can insmod fail with kernel module is already loaded, even is lsmod does not contain that module?

I'm making a minimal Linux distro with buildroot to learn kernel module development. If I call a minimal module hello.ko (or almost any other name I've tried), everything works fine. However, if I ...
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1answer
3k views

lsmod returns nothing on my embedded device

I have put a vendor supplied embedded Linux installation (called X-Linux) onto a hardware device. I ran lsmod to see what modules are loaded and nothing at all is shown. Also there is no /proc/modules ...
2
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1answer
266 views

How to install cryptoloop module on Kali 4.6?

I am unable to launch the cryptoloop module on Kali 4.6. How can I to install it? # modprobe cryptoloop modprobe: FATAL: Module cryptoloop not found in directory /lib/modules/4.6.0-kali1-amd64
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1answer
190 views

How is a wifi driver exposed to userspace?

I'm exploring how does the wifi pipeline work on the Raspberry pi 3 starting from the driver and going upwards. I've identified the following drivers responsible for working with the wifi chip: $ ...
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0answers
1k views

Loading new wlan driver

TL;DR. Two issues: can't get wlan0 working, can't get wpa_supplicant working. I compiled & installed kernel 4.4 (rev. eb4d55) with revamped rtl8xxxu support enabled. In order to compile & ...
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2answers
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Kernel module for Cisco VPN client doesn't compile under ubuntu 10.04 LTS?

I am trying to install a Cisco VPN client under Ubuntu 10.04 LTS. In the extracted folder I type: alex@alex-laptop:~/Downloads/cisco4.8/vpnclient$ sudo ./vpn_install and there is output of activity ...
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0answers
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Failed to insert 'vboxdrv': Required key not available

I've just installed fedora 27 with all updates on my new laptop. And I've tried to install VirutalBox. I've installed this packages: VirtualBox VirtualBox-kmodsrc VirtualBox-server VirtualBox-akmod ...
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0answers
622 views

PS/2 keyboard only works up to GRUB, not after OS fully booted

I have an IBM model F keyboard connected to to my PS/2 port and the keyboard seems to be recognized at first: the lights on the board blink and up to the GRUB menu key presses are being registered. ...
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1answer
330 views

What's the difference between CONFIG_R8169 and CONFIG_R8169_VLAN?

.config from /usr/src/linux-2.6.38.8 contains: CONFIG_R8169=m CONFIG_R8169_VLAN=y What's the difference between CONFIG_R8169 and CONFIG_R8169_VLAN?
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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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0answers
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Check the firmware which a module needs

in http://ubuntuforums.org/showthread.php?t=2242147&page=2, The driver requires firmware: $ modinfo iwlwifi filename: /home/chili/Downloads/backports-3.16-1/drivers/net/wireless/iwlwifi/...
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1answer
529 views

The asus-laptop module cannot be loaded (No such device) on Asus FX503 laptop

I am tracing the asus-laptop driver from 4.17.1 because my keyboard backlight control keys not working. And, I found the driver cannot be loaded, it always reported "No such device". Then I found it's ...