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Questions tagged [udev]

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Udev is a Linux process that manages device file entries under /dev

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DISTRO: Fedora 41 KDE GOAL: Im trying to automatically set some cpu parameters (per-CPU max frequency, governors, energy policy, etc.) during my boot process. I wrote a script to do this (it lives at /...
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Basically, without giving the user any new permissions, I am looking to be able to write to /sys/bus/usb/drivers/usb/unbind and /sys/bus/usb/drivers/usb/bind via a systemd service running as the ...
Camille Guay's user avatar
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My system is working just fine. The questions at the end of all this are; does the kernel keep a cache of device information; is it possible for it to be only partly updated, leaving a mix of new &...
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I have an udev rule to wake my laptop using bluetooth as follows. ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", \ ATTR{bDeviceClass}=="e0", \ ATTR{...
paulodiovani's user avatar
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I'm working my way through understanding more about unix/linux and how the various tools/packages/options interact with one another (for example, the role of systemd, or how fstab works). I'm also ...
jungle_jim's user avatar
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If I print the USB property of a device I own with the following command, I get the following output $ udevadm info --no-pager /sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.3 P: /devices/...
Davidbrcz's user avatar
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1 answer
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I bought this lovely old Macally iBall Pro and I have it setup well in Ubuntu 22.04 using xinput to configure middle button emulation and scrolling with a button. Like so: xinput set-prop "12&...
Fratink's user avatar
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I have a udev rule which looks for a specific usb stick (VID and PID), and then starts a templated systemd service: KERNEL=="sd[a-z][0-9]", ... ACTION=="add", RUN+="/...
kalj's user avatar
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My task is to have a custom mount point and for the mount itself to happen automatically. that is, the device is connected, a folder with its name is created in some place (/mnt/usb/{name}) and the ...
richstog's user avatar
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I am building keyboard multiplexer. My current plan is to connect two devices through Bluetooth, and let my wired USB keyboard switch between these two devices. My first instinct is to build Two-...
MRINAL YADAV's user avatar
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I am following this article to deauthorized usb: https://www.kernel.org/doc/Documentation/usb/authorization.txt The command I used for de-authorization is sudo sh -c 'echo 0 > /sys/bus/usb/devices/...
MRINAL YADAV's user avatar
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I run ubuntu based docker image in linux server and I want to attach usb smart card reader to the docker container. At the initial start my usb reader is picked from the container and do desired job. ...
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I have a computer, running Debian 12, that is equipped with 2 RDX (from dead Tandberg / Overland company) cartridge drives. One is an internal SATA, and one is an external USB. They are cartridge ...
iXô's user avatar
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Ubuntu 24.04 LTS, systemd 255 In a multiseat setup, I'm trying to set seat0 (Matrox DRM) to CanGraphical=no for TTY-only, but loginctl shows yes even after untagging master-of-seat in a 99- custom ...
trleith's user avatar
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2 votes
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380 views

Is there a way to simulate a physical HDMI cable unplugging and replugging on a Linux system running Xorg with AMDGPU driver? In my Xfce system on X11, I have trouble with monitor output/connector ...
feearent's user avatar
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