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

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Trigger a login by plugging in a USB drive

OS: Linux, Mint. I want to have a system where I can insert a flashdrive into a computer, and using UDEV rules, have the system login a user account. I can do the UDEV part, but what command should I ...
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213 views

Virtual mouse is ignored by xorg when loaded

I'm trying to run virtual mouse driver from book "Essential Linux Device Drivers" but when I'm load this module into kernel using insmod in /var/log/Xorg.0.log I see: [ 757.212] (II) config/udev: ...
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3k views

USB passthrough for LXC containers

PROBLEM: So I've been trying to get a usb device (primesense - the OEM reference for the Kinect) to passthrough to an LXC container so I can develop without worrying about polluting my stable system ...
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GKrellM vs. udev's asynchronous drive mappings on bootup

Well, supposing you had multiple drives (3 in this example), udev would always play dice with them on each system reboot. And now, let's make things a little more quirky by adding one USB flash drive ...
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1answer
1k views

Prevent USB storage from using different device on reset

I have a hard drive in a USB enclosure that I am doing some data recovery on. The drive is in extremely bad shape and frequently resets on reads. The device registers as /dev/sdb. Sometimes, probably ...
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1answer
103 views

Automounting with udev takes too much time

Specifically, using udev to automount usb memory sticks takes about 3-4 seconds according to its own logs. It may not sound like that much, but it is on an embedded distribution for a system that ...
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154 views

Udev taking 15 seconds to detect mouse

Whenever my mouse, a SteelSeries Xai, is plugged in, there is a 15 second delay until the mouse is properly recognized and starts working. This is specially troublesome at boot, where udev waits for ...
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96 views

DHCP Problems Virtualbox

I have some minor issues with Ubuntu server on a virtual machine and even though I have some assumptions as to what actually happens, I'd like to ask all of you about your opinion. Here's the deal: I ...
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Do duplicate udev rules in different files cause any problems?

Do exact duplicate udev rules in different files cause any problems? In my case, it's an 'ADD' rule for a custom device. The rule is apparently working and I can access the device, but I don't know ...
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78 views

different passwords depending on plugged-in devices

I would like to have different passwords for my account(s): When (e.g.) a certain USB stick is plugged in then an easy password is to be used. The idea is: If I leave my computer then I take the stick ...
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1answer
912 views

Not working udev rule with systemd-udevd on Fedora 19

I would like to play with IOIO on my Fedora 19, so I installed the udev rule as the documentation tells, in /etc/udev/rules.d/50-ioio.rules: ACTION=="add", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ...
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428 views

udev, how to prevent further rules to be run?

Is it possible (and if so how) to tell udev to stop executing further rules for a certain device? I know that there is an order/sequence of rules by the alphabetical naming of the udev files. ...
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729 views

80-net-setup-link no longer functions when I downgraded systemd

I've downgraded systemd to version 208. Although I still have /etc/udev/rules.d/80-net-setup-link.rules on my disk, but the names of network interfaces were not named correctly: e.g wlp3s0 is not ...
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109 views

Keep keyboard layout upon inserting external keyboard

I have a custom keyboard layout, that I enable using this commands: setxkbmap -verbose us -variant altgr-intl xmodmap -verbose /home/coub/.myxmodmap This works just fine, the thing is, that when I ...
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Modifier keys cannot be mapped to regular keys on USB keyboard with udev

Using an hwdb file, /etc/udev/hwdb.d/99-keyboard.hwdb, I can remap the left Alt key on my USB keyboard as the Ctrl key: keyboard:usb:v*p* KEYBOARD_KEY_700e2=leftctrl This also works when I try to ...
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How can I find available network interfaces?

This is in regard to linux, but if anyone knows of a general *nix method that would be good. I booted a system yesterday with an ethernet cable plugged in. "NetworkManager" is not installed, so once ...
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1answer
630 views

How to make a bash script wait till a pendrive is mounted?

I have a bash script which has a line cd /run/media/Username/121C-E137/ this script is triggered as soon as the pen-drive is recognized by the CPU but this line should be executed only after the ...
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linux udev rule to load gadget module for client driver

I'm having a hard time automating loading a gadget module and bringing up the usb0 device as a eth interface. The interface in question is g_ether for a embedded Linux device and connecting to a PC. ...
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1answer
155 views

Bash code runs correctly when it is executed in terminal but does not work properly when executed using udev

I am trying to move various files present in a pendrive into their respective folders on PC. ie ,Music files into music folder,text files into Documents and so on.. I have written a script for that ...
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1answer
322 views

Switch between keyboard layout based on input event

I have a french and a US keyboard on my computer. I'm using awesome wm and have set everything so that it is easy for me to switch between keyboard layout. But I still have to do it myself. ...
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1answer
261 views

Can't run put udisks commands in udev scripts

I'm trying to launch a script when a LUKS drive is inserted. So I setup a udev rule: KERNEL=="sd*3", ACTION=="add", ATTRS{serial}=="XXX", ATTRS{manufacturer}=="XXX", ...
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1answer
785 views

udev triggers rule but script fails to execute properly

I am trying to automate a quick and dirty backup of a headless system. (I feel it is relevant to note that I am running Busybox utilities so this is the mount tool I have at my disposal) I have made a ...
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How can I create a udev rule to mount a USB drive read only?

I'm trying to set a particular USB drive to always mount read only. If I plug it in, it is seen as sdb with a single partition, sdb1. Here are some relevant udevadm lines (not the entire output of ...
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2answers
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Network naming on Arch Linux

I've just installed Arch Linux on my old PC, to do the installation I used wifi-menu wlan0, now I've reboot but if I type: ifconfig wlan0 up I have as a result: wlan0: ERROR while getting ...
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Add udev rule alias for input device

I am trying to add a udev alias rule for my xboxdrv (x-box controller) and I can't seem to figure it out. dmesg | grep "input" I see: [ 6.239955] input: Microsoft X-Box 360 pad as ...
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How can I set repeat rate of USB keyboard with udev?

How can I get my keyboard repeat rate to apply to a hotplugged USB keyboard? I made a udev rule to set the keyboard repeat delay and rate, /etc/udev/rules.d/99-usb-keyboard.rules with the following ...
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1answer
5k views

Is there a way to change device names in /dev directory?

I wrote this rule for testing purpose: SUBSYSTEMS=="usb", ATTRS{manufacturer}=="Kingston", ATTRS{serial}=="001CC0EC34A2BB318709004B", ATTRS{idVendor}=="0951", ATTRS{idProduct}=="1642", ...
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207 views

How can I run setfacl -m group:group2:rwx /dev/video0 /dev/snd/* on login?

Q: How do I grant permissions to /dev/video* and /dev/snd/* to a second user, user2 when logged in interactively as user1? I have written a wrapper for sudo that clones the XAuthority settings, and ...
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838 views

External disk doesn’t appear in /dev/

I have an external (USB-2.0) hard drive. Today I couldn’t mount it after plugging to my computer. When I look in /dev/ $ ls /dev/sd* There is no new disk, only sda and sdb with their partitions, ...
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4k views

Allow non-root user to read/write /dev files

In my /dev folder, I would like the following files to be user readable and writable: /dev/ttyUSB0 /dev/gpib0 How do I do this without using chgrp? I can edit /etc/udev/rules.d but I do not know ...
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Re-ordering serial ports on a multiport card

I have a Red Hat Enterprise 6.2 machine with two on-board serial ports and a PCIe card with 8 additional serial ports (16C950 UARTs, 16C550 compliant). I've added the kernel option 8250.nr_uarts=10 so ...
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1answer
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Symlinks on /dev/ttyUSB* via udev

So I built a nice little GSM-Gateway with a PC-Engines ALIX.2D13, a Huawei E220 umts modem, Debian Wheezy and gammu-smsd. I need a fixed device name für gammu-smsd to survive reboots. I tried to make ...
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1answer
132 views

MAC Address changes after dirty shutdown

I'm having a strange issue which I originally thought was tied to the fact that I created an Ubuntu system from an image of another. However, after reinstalling Ubuntu from scratch I am getting the ...
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1answer
755 views

udev rule for a USB device and ignoring others

Is it possible to create a udev rule for an USB device and ignore other USB devices? I want my system to support HID USB touchscreen (hid.ko) and ignore HID devices such as keyboards, mice, etc.
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Disable the external keyboard from a script

I have a udev rule for my external keyboard. I can catch events, and by running a script I can also reach udev env variables. Can I disable keyboard with udev? Or must I use a script to disable the ...
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udev rule not working

I have created a udev rules which is supposed to mount a USB device, backup some datas et cleanup everything. I am actually working on a Debian server. There is the information about my usb device ...
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1answer
2k views

Kernel recognizes USB device but then I can't find it in /sys or /dev

When I connect my Samsung 390G (a cheap cell phone!) to Ubuntu 13.04, dmesg seems to indicate that the storage device thereon is recognizable: [Sun Dec 29 01:26:10 2013] scsi16 : usb-storage ...
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133 views

Kodak still camera udev problem

My still camera is not includev in udev list. lsusb stands: Bus 007 Device 016: ID 040a:058b Kodak Co. Digital Camera So I add to /usr/lib/udev/rules.d/40-libgphoto2.rules ...
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1answer
921 views

udev GROUP and MODE assignments on symbolic link have no effect

I'm trying to connect my velleman k8055 board per usb to my pc. For this I have the udev rule SUBSYSTEM !="usb_device", ACTION !="add", GOTO="velleman_rules_end" ATTRS{idVendor}=="10cf", ...
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2answers
176 views

Is there a uniform way to discover information about devices?

UPD: Changed question title from manage devices to discover information about devices One of the frequent thing I do is look up info about devices on my systems. And I am constantly find myself ...
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1k views

How to disable a usb sound device with udev

How can I disable USB device by Vendor ID? So I have: [root@piotr ~]# lsusb Bus 001 Device 002: ID 058f:9254 Alcor Micro Corp. Hub Bus 001 Device 003: ID 0d8c:000c C-Media Electronics, Inc. Audio ...
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2answers
275 views

/dev/disk/ lists disks, why /dev/net/ doesn't list network interfaces? [duplicate]

I know that udev manages devices in /dev and I expected to find information about available network cards (hardware) or at least network interfaces (software) there. ifconfig output shows me eth0 and ...
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1k views

How does udev get device numbers for the devices it creates?

Spun off from a small exchange in chat. One of the primary advantages of udev is that you don't have to worry about major and minor device number exhaustion anymore. But the devices created by udev ...
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Linux “/dev/SDA” goes read only file system on SDB device failure [closed]

i have a very peculiar issue that is running in my system. Using debian linux : My system boots up very normally with a primary and secondary hard disk. suddenly my secondary hard disk fails with ...
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2k views

Problems copying large files to USB drive

I've got some issues when copying larger files to my USB drive. First of all, my system stopped recognizing my USB drives automatically. I now have to run modprobe usb-storage in order for my USB ...
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1answer
210 views

What does it mean when something says that UNIX device files are static?

I've been reading up on udev. In the "overview" section, Wikipedia states that "unlike traditional Unix systems, where the device nodes in the /dev directory have been a static set of files, the Linux ...
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1k views

how to include or add /dev with tar --one-file-system

I'm running tar on a complete remote filesystem using ssh -n <hostname> 'sudo tar -cpvzf - --one-file-system /' | cat > Bak.tar.gz This gave me a tarball. I tried importing this tarball ...
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xrandr command not executed within shell command called from udev rule

I own a Thinkpad with an UltraBase (a docking station). My operating system is Ubuntu 10.10. Now, I would like to react on the "docking" event by setting the resolution of my external display ...
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202 views

How to rename devices for graphical output such as VGA0

On my Laptop the names of my graphical outputs change depending on what chip is activated in the BIOS. This leads to problems in some scripts where outputs such as VGA-0 or LVDS-0 are specified. So I ...
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What is the correct way to write a udev rule to stop a service under systemd

I'm running Arch Linux, and I have a udev rule which starts a service when a device is inserted. In this case, it dials a connection when a 3G modem is plugged in. KERNEL=="ttyUSB*", ...