Questions tagged [modprobe]

modprobe is a Linux program and used to add a loadable kernel module (LKM) to the Linux kernel or to remove an LKM from the kernel.

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Why can't I set "modprobe vfio enable_unsafe_noiommu_mode=1"?

Running Ubuntu 22.04 with kernel 5.15.0-83 inside a QEMU VM: guest$ sudo modprobe vfio enable_unsafe_noiommu_mode=1 guest$ cat /sys/module/vfio/parameters/enable_unsafe_noiommu_mode N It's not ...
Ken Y-N's user avatar
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Suggested ways of identifying hardware on Ubuntu

I am getting asked a lot if a certain hardware is supported on Ubuntu (or Linux for that matter). Usually people tell me the brand and model of their alledgedly unsupported hardware, but of course not ...
OpenGears's user avatar
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Nvidia drivers problem (not booting, nvidia-smi not detecting etc.)

I am at my wits end with Nvidia drivers. I believe that I tried to set them up a long time ago, failed, and settled with open-source drivers. However, I still had to deal with screen tearing so after ...
learningtoc0d3's user avatar
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Ubuntu 20.04 No Wifi adapter found and doesn't detect USB tether

I know there are similar questions. but their command output is different to mine and did not work for me. I have installed Ubuntu on my flash drive and i have used it for more than a year. Cause of ...
yosan melese's user avatar
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How do you add modules to be loaded in Ubuntu 22.04

I would like to add some modules to be be loaded in Ubuntu 22.04 (The same works in ubuntu 20.04) root@localhost:~# echo nvme_rdma >> /etc/modules -bash: /etc/modules: Read-only file system Is ...
Rusty Weber's user avatar
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How to restore existing kernel header in grub

I was previously using Ubuntu 20.04 while booting using the kernel header 5.4.0-112 generic. Someone used my computer while I wasn't around, and now I don't see the option to boot using that kernel in ...
JustADude's user avatar
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How to autostart sudo modprobe using a service for fixing intel wifi (ubuntu 22.04)

(ubuntu 22.04, fresh; wifi: Intel Corporation Wireless 8265 / 8275 ; HP elitebook 830 G5) I followed already several howtos to create my script and service. I need to run modprobe at start because of ...
gekko77's user avatar
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modprobe btusb error

I am using a Ubuntu desktop 20.04.4 LTS with linux kernel 5.15.0-41-generic. I bought UB500 from tp-link. After plugging it doesnt turn on-off. I tried every steps exactly and following the answer ...
tbturk's user avatar
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modprobe nouveau fails, as it tries to load 'off.'

When I try modprobe nouveau I am greeted with: modprobe: ERROR: ../libkmod/libkmod-module.c:838 kmod_module_insert_module() could not find module by name='off' modprobe: ERROR: could not insert 'off': ...
Bram's user avatar
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WIFI (driver) not working

I have installed Ubuntu alongside Windows. The Wifi Adapter, which works on Windows through automatic driver installation, is not working on it. Through help with a question here I installed the ...
Hammad Ahmed's user avatar
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Irium webcam Initialization failed

Besides this other problem I had with irium webcam on linux, when we close irium webcam and try to open it again we get the message: Running this command doesn't make the app work. The only way to ...
Vitor_figm's user avatar
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modprobe on my Ubuntu machine: invalid option -- 'l'

I was reading the modprobe manual: https://linux.die.net/man/8/modprobe So I tried the -l flag on a few different Ubuntu machines: 18.04, 20.04.3 After getting: modprobe: invalid option -- 'l' I ...
Yaniv G's user avatar
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If I’ve already blacklisted nouveau, why is `options nouveau modeset=0` necessary?

All the instructions for disabling the Nouveau driver (for example, the official NVidia guide to using CUDA with their proprietary drivers) suggest that you create a modprobe.d file with the contents: ...
Paul Fisher's user avatar
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1 answer
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high cpu usage from systemd-udev, tracker and modprobe after 21.10 upgrade

I see high cpu usage after upgrading to 21.10 top indicates that tracker, systemd-udev and modprobe are running continuously I also see mouse problems. I my mouse moves jerkily and I get spurious ...
James K's user avatar
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How to disable the internal speaker through blacklist?

I'm running the microsoft-teams-for-linux app and works fine for chat. For VoIP the mic works fine. Sound seems to be routed to the internal speaker rather than to the headset (I had the volume low ...
Nicholas Saunders's user avatar
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Cannot modprobe wireguard on Ubuntu 20.04

Update: This seems to be a problem with my hoster (1blu). Loading the module works perfectly fine on my local computer and on my other server (a different hoster). I cannot make wireguard work on my ...
alinuxexpert's user avatar
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Can't detect built-in camera after installation

I have an old laptop (>4 years)with the bare minimum to work with. I installed Lubuntu 16.04.3 LTS and so far so good, my only issue is that the built-in camera isn't being detected by any app. I'm ...
DanielUPPA's user avatar
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2k views

"FATAL: Module 88x2bu not found in directory /lib/modules/5.8.0-45-generic" when I do "modprobe 88x2bu"

Helo i've been trying for many days,, but Im done I recognize I need a hand from the experts guys.. I purchased a cudy AC1300 wireless Dual Band USB adapter. and I found the right driver RTL8812BU due ...
Robert Mussela's user avatar
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Wifi does not work after suspend - ubuntu 20.10 - MT7630e

I'm using Ubuntu 20.10: dsm@dsm ~> lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.10 Release: 20.10 Codename: groovy dsm@dsm ~> uname -a ...
mrazizi's user avatar
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modprobe: FATAL: Module not found

I'm struggling to permanently insmod custom PCIe device drivers Module can be loaded manually with insmod ~\work\project\build\xdma.ko But I didn't manage to add it permanently. I copied xdma.ko ...
Konstantin Vinogradov's user avatar
1 vote
1 answer
2k views

dell-smm-hwmon freezes Alienware m15 r1

I have tried suggestions such as installing i8kutils and dell-bios-fan-control but it always freezes my laptop if I do sudo modprobe dell-smm-hwmon force=1 And if I try to do it without force, it ...
Vaishnav Santhosh's user avatar
2 votes
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951 views

Nvidia driver curiously only loads properly when booting in recovery mode (Not blacklisted, secure boot disabled)

I've been having serious trouble getting the Nvidia drivers working on my machine with Ubuntu 20.04 and 20.10. My graphics card is an RTX 2080 and my machine is an ASUS desktop. I've been getting the ...
user137769's user avatar
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I accidentally deleted modprobe.d can Ubuntu won’t boot what can I do?

Nvidia driver blacklisted the open source version and I found the file. Instead of deleting that one file I accidentally deleted the entire modprobe.d folder. I rebooted and now Ubuntu 20.04 won’t ...
user2584960's user avatar
19 votes
7 answers
10k views

Virtualbox broken after a dist-upgrade -- cannot install virtuabox-dkms nor run modprobe vboxdrv

I am running Ubuntu 20.04 and recently did a dist-upgrade. uname -r: 5.8.0-34-generic I purged Virtualbox and associate files by: sudo apt-get purge "^virtualbox-.*" After trying to ...
jRo's user avatar
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How to run throttle stop script at startup?

I have tried this (How do I write a script that runs on startup?) to automatically run a throttle stop script at startup. But I cannot make it work. I've tried the methods (GUI app, cron job and /rc....
Mat S's user avatar
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375 views

Libkmod error - Ubuntu 18.04 doesn't start

While starting the system I'm getting the following message: libkmod: ERROR ../libkmod/libkmod-config.c:656 kmod_config_parse: /etc/modprobe.d/local.conf line 1: ignoring bad line starting with '...
Arthi Amar's user avatar
2 votes
0 answers
2k views

Load ashmem & kmodsign

I recently install Anbox on my Ubuntu 20.04. I found on the post Module "ashmem" doesn't load with Secure Boot on (but "binder" does load with secure boot on) that I need to ...
LucasPa's user avatar
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Delay when using modprobe v4l2loopback with ffmpeg

I will state, that for the first maybe 2/3 mins of having the camera started, it appears that the audio/video is in sync. Thats to say, there is no delay on the video. Then I hear a "click" ...
Jamie Hutber's user avatar
4 votes
2 answers
5k views

ls -1 /dev/{ashmem,binder} yields anticipated result for /dev/ashmem, but an error for /dev/binder

Background In another post, I reported that: I'm running Ubuntu 20.04.1 with default kernel 5.4.0-42-generic (installed from Main) on a UEFI system. I want to load two kernel modules ("ashmem&...
GizmoChicken's user avatar
5 votes
1 answer
6k views

Module "ashmem" doesn't load with Secure Boot on (but "binder" does load with secure boot on)

Summary I'm running Ubuntu 20.04.1 with default kernel 5.4.0-42-generic (installed from Main) on a UEFI system. I want to load two kernel modules ("ashmem" and "binder") with ...
GizmoChicken's user avatar
0 votes
2 answers
606 views

Automated Driver Loading: Cron, Init, or Modprobe

Main Problem I am attempting to automate the loading of drivers for my system. The drivers were built manually and must be loaded manually. Another caveat is that one of the system drivers must be ...
Sterling Butters's user avatar
1 vote
0 answers
3k views

modprobe: ERROR: could not insert 'vboxdrv': Operation not permitted

When I type sudo modprobe vboxdrv all it shows is: modprobe: ERROR: could not insert 'vboxdrv': Operation not permitted I cant find anything to fix this. This is in Ubuntu 20.04.
DVRK FVSIXN's user avatar
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348 views

How to add modprobe command to GRUB_CMDLINE_LINUX_DEFAULT

Ubuntu 20.04 To make my WiFi happy I enter the following modprobe via the terminal; modprobe -r brcmfmac Then wait 5 seconds and modprobe brcmfmacCan I add this to a startup process so that I don't ...
darth_epoxy's user avatar
7 votes
2 answers
19k views

How do I automatically run modprobe v4l2loopback on boot?

I'm using OBS Studio and would like to have a virtual video output saved permanently so that it can be run when the application is launched. This command creates the virtual output: sudo modprobe ...
Mark Lee's user avatar
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3 votes
3 answers
13k views

How to unload a kernel module which is in use and has a recursive module dependency?

I habe a driver for my ELM 327 an it uses the pl2303 module which depends on the usbserial and this again depends on the pl2303 module. What I tried: sudo modprobe -r usbserial pl2303 sudo modprobe -...
Noel Schenk's user avatar
0 votes
1 answer
572 views

Screen tearing reappeared after updating form 19.10 to 20.04 (GeForce GTX 1050 Ti Mobile)

I am using an MSI GL62M 7REX laptop which has a GeForce GTX 1050 Ti Mobile graphics card. When I was using Ubuntu 19.10, I was able to deal with screen tearing in the following way: Similarly to this ...
Nemgathos's user avatar
  • 207
1 vote
1 answer
513 views

Ubuntu server: Cannot setup dummy driver alsa (LXC container) // modprobe issue [duplicate]

I'm trying to setup alsa on my ubuntu server, but it seems that the drivers are not installed & I don't know how to solve this problem. I just wanna setup a dummy soundcard. But I really don't ...
Sofiane Hdm's user avatar
2 votes
1 answer
532 views

How do I write a script that runs on startup?

Newbie here. I have a Dell Inspiron 3442 who suffers from the "CPU stuck at 800Mhz" problem. In Windows, I used to run ThrottleStop at every startup and disable BD PROCHOT... So I installed Ubuntu ...
Arthur Tabbal's user avatar
2 votes
0 answers
270 views

How do I debug errors with enabling the NFS kernel module?

I am running Ubuntu 18.04 LTS and wanted to use an NFS shared drive. On most of my servers it just simply worked with sudo modprobe nfs. But on this specific server, which was set up exactly the ...
PE_Christiaan's user avatar
3 votes
2 answers
3k views

softdep for vfio-pci wont work

I'm trying to do passthrough so my devices are grabbed by vfio-pci before any other module. Here's my /etc/modprobe.d/01-vfio-pci.conf: softdep nouveau pre: vfio-pci softdep nvidiafb pre: vfio-pci ...
Guerlando OCs's user avatar
6 votes
1 answer
16k views

Ubuntu equivalent of mkinitcpio.conf

I have a sh script that should be executed during system boot, as I understand before graphic driver modules are loaded. Probably this is not relevant for the answer, but this script serves for PCI ...
Bruno Golosio's user avatar
1 vote
0 answers
3k views

unable to load the module for vfat support with modprobe

I'm doing a lab in this course and I'm asked to : "Load the module for vfat support; does it have any dependencies ?" The answer for this lab is these commands : modprobe vfat modinfo vfat lsmod ...
Tomas.R's user avatar
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1 vote
1 answer
2k views

Sign iwlwifi kernel module for SecureBoot

After a kernel update of Kubuntu 19.10 (i.e., via normal updates), wifi has stopped working, and the driver is not loaded anymore. I have tried to run sudo modprobe -v iwlwifi unsuccessfully with this ...
Philip Leifeld's user avatar
2 votes
0 answers
330 views

Stop modprobe spam

I setup GPU passthrough, it works, but ubuntu is spamming modprobe processes, it consumes lot of CPU, this is log from dmesg: [22014.015852] PKCS#7 signature not signed with a trusted key [22014....
tomsk's user avatar
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10 votes
1 answer
26k views

Can't load wireguard module

I have a VPS server running Ubuntu 18.04 LTS where I wanted to install a WireGuard VPN service. I have started with adding the repository and then installing the module which is running fine and ...
Ananaskirsche's user avatar
2 votes
1 answer
4k views

I still get "Dummy output" for audio after installing alsa-base and pulseaudio

I tried using my audio recently and I noticed that I couldn't any more, I've tried a few of the options I've seen but they do not seem to work: Dummy Output in Audio; nothing is working (ALSA broken?)...
Edmund1645's user avatar
1 vote
0 answers
2k views

Anbox-Modules-dkms Won't Install

I'm having trouble installing the modules sudo modprobe ashmem_linux and sudo modprobe binder_linux. Every time I try the code I get this message in my Terminal modprobe: ERROR: could not insert '...
SonicStarMan's user avatar
0 votes
1 answer
1k views

Why is a device file not created?

Upon insertion of a mass USB storage device like an external hard drive or a flash drive, dmesg -w notes its insertion but no corresponding file such as /dev/sda or /dev/sdb is created.
rigel's user avatar
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5 votes
2 answers
3k views

open-vm-tools modprobe ERROR: could not insert 'vmgfx'

After doing a dist-upgrade yesterday evening the open-vm-tools-desktop are no longer working correctly. Which means, I can't resize to fullscreen. Trying to do so ends in a black screen. Taking a look ...
LukeFilewalker's user avatar
2 votes
2 answers
1k views

empty "lsmod | grep loop"

I am trying to mount an ISO image $ sudo mkdir /mnt/myiso $ sudo mount -o loop ubuntu-16.04-server-amd64.iso /mnt/uiso The error message says mount: /mnt/uiso: failed to setup loop device for /home/...
Sebastia.Net's user avatar