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

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No ttyUSB when connecting USB-RS485 to Beaglebone Black

I'm trying to connect a externally powered board to control the motors of a robot to my BeagleBone Black. I'm using ssh over USB(the mini-usb) to control the Beaglebone from my laptop. The BBB is ...
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1answer
19 views

What is udev “urbnum”?

When making a query to the udev system, one attribute that can show up is the urbnum ie: ATTRS{urbnum}=="538" I've looked through the documentation, but cannot find any mention of it. Are the ...
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156 views
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How to differentiate USB flash drive and CD-ROM?

I want to differentiate an USB flash drive and a CD-ROM. My requirement is when I connect to a system only the CD-ROM should work, but not the USB key.
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1answer
547 views

Why do I not seem to have hidraw options on my system, and how can I fix my usb devices?

Starting today, I noticed a few problems with my system. USB devices, including the internal ones such as microphones, don't seem to be working at all. I first noticed when my keyboard and mouse ...
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24 views

Linux choke on interface labels > 16 characters under Fedora 20+

I have an app that creates a subinterface (appending :ABCDE to the associated NIC label). This worked fine when interfaces were labelled something like eth0 or eth1. However, under Fedora 20 (and ...
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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 ...
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5 views

start xbindkeys on mouse gets connected

How do I start xbindkeys with the commands specified in ~/.xbindkeysrc when I plug in a specific usb device (my mouse)?
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3k views

Udev rule is not being used?

I'm setting up udev to handle my external USB hard drive when it gets plugged in and removed (no mounting yet). So far, I've made two new rules in /etc/udev/rules.d/10-local.rules to log ...
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Why are network interfaces not in /dev like other devices?

I'm mostly curious, but why aren't network interfaces in /dev? Are there any other kinds of devices that aren't represented as a node under /dev?
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1answer
109 views

btrfs RAID1 array shows as two disks

I mounted 2 drives as a RAID1 btrfs array (btrfs v3.12, Ubuntu 14.04). Everything's working fine except nautilus and other GUI-based apps see two disks, both labeled "Raid1". One is mounted (the ...
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3answers
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udev re-numbering when creating symlinks

I have USB cellular modem attached to an ALIX 3d2 board running voyage linux (which is based on Debian Squeeze). The modem registers itself as a TTY device, and so by default, udev will create TTY ...
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udev rule for assigning known symlinks for identical usb serial devices

I have two (and possibly in the future, more) USB serial devices which are identical (down to the serial number, unfortunately) - they're actually BTC miners. Currently they end up as ttyUSBX where X ...
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Arch Linux not booting after system update

After running a system update pacman -Syu with the testing repo not commented, my computer no longer boots. It shows the udev loading, then shows a black screen with a cursor blinking in upper left. I ...
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1answer
26 views

What's the relation betwen ACPI, udev, HAL and pm-utils

I'm trying to figure out how the power management in achieved in Linux (because I want to fix some issues in my laptop). I have found thoughtful documentation about these elements separately. In other ...
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25 views

Why does my USB modem produce multiple /dev/ttyUSB* files?

I have a single Sierra Wireless USB 308 modem we are using for sending SMS message to, and receiving SMS messages from, customers. When this single device is plugged in, the system creates multiple ...
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1answer
1k views

udev rule for usb attach/detach not triggering

I'm running RHEL6 and I'm trying to write a udev rule that is triggered upon plugging in and removing usb devices. I created a file called 80-usb.rules in /etc/udev/rules.d/ and I gave it the ...
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1answer
2k views

Consistent network interface name ubuntu using pci slot

One can set consistent interface naming via mac address by modifying /etc/udev/rules.d/70-persistent-net.rules. Can you establish consistent interface naming by PCI slot number? (I tried but failed) ...
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1answer
76 views

Udev (197) last_rule not working

I am using udev version 197. I write a rule /etc/udev/rules.d/00-test.rules It's content is : SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="e0", ATTRS{bInterfaceSubClass}=="01", ...
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Does udev only check for matches on the first remove event?

ACTION=="add|remove",SUBSYSTEM=="tty", ATTRS{idVendor}=="XXXX", ATTRS{idProduct}=="XXXX",SYMLINK+="device", RUN+="/home/alvin/udev/test.sh" This is the command that works on add ...
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A tool for automatically applying RandR configuration when external display is plugged in

is there a tool which enables one to: remember current RandR configuration (position, orientation, resolution etc) on per-monitor basis, automatically apply last known good configuration as soon as ...
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1answer
21 views

How to map extended buttons on mouse?

I am trying to follow this guide to using a Logitech G600. I have (using a windows computer) mapped each key combo on the mouse to something on a normal keyboard. I have set up some rules in ...
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1answer
63 views

Mapping mouse buttons with udev hwdb

Following this guide: http://www.vxnick.com/blog/2014/10/binding-extra-mouse-buttons-on-linux/ I've set up a config file: $ lsusb | grep G500 Bus 006 Device 007: ID 046d:c068 Logitech, Inc. G500 ...
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1answer
813 views

XFCE on Debian: hiding block devices

I'm running XFCE 4.8 on Debian Wheezy and I can't find a clean way to hide a block device (system's SATA/SSD drive) on the desktop, but still be able to see / mount removable devices via Thunar. The ...
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36 views

Bluetooth keyboard not showing up in /dev/input

I've just installed an Apple Wireless keyboard on a Debian system. I used this guide and only console tools — no X on that machine yet. The keyboard works fine. Now I want to remap a right Cmd key ...
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Handle mouse and keyboard usb device in udev

I'm trying to set up usbip on our thin clients to forward (almost all) USB devices to the server. What I don't want to forward are all input devices and all hub / virtual devices. So I want to ...
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1answer
31 views

Mount USB stick without partitions using udev rules

I need to have udev mount a USB device that has raw data, which appears like /dev/sdc, but in the same time if another stick has partitions I only need to have folders mounted only for those ...
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1answer
79 views

No /dev/hidraw device when I plug in a Yubikey

I have a Yubikey NEO, and I'm trying to get it to work on Debian. When I plug it in, I get udev events, but no /dev/hidraw? device. Here's what I know so far: cat /boot/config-$(uname -r) | grep ...
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27 views

udev not running rule at boot?

I have a very simple udev rule at /etc/udev/rules.d/sdcard.rules: KERNEL=="mmcblk1", SUBSYSTEM=="block", SYMLINK+="sdCARD" Problem is the symlink is not created for me automatically at boot. I have ...
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82 views

UDEV-Rule to mount USB-Stick / execute script

I have a problem with an udev-rule. i simply want to mount a usb stick when it is plugged in. the rule correctly executes a script which mkdir the mount point and then calls mount. everything seems to ...
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46 views

No USB flash drive / dev / Galileo Intel Gen2

I have intel Galileo Gen2 and Debina installed on it from here: http://sourceforge.net/p/galileodebian/wiki/Home/ And I also have a problem with that, it does not appear in the / dev / any of the usb ...
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1answer
113 views

Starting backintime at disk plug

I use backintime, you can tell it to backup via backintime -b as user (not root, but I can change that if needed). Now I'd like it to start as soon as I plug my backup hd. As udev is likely the right ...
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1answer
29 views

How to wait for a /dev/video0 before starting a service

First off, I am systemd noob. I can write unit files, which depend on a mount, because I can list them and then add to Requires=xxx, such as: # systemctl list-units | grep data mount-data.service ...
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How to add scripts for udev to run

I have several scripts i would like udev to run when a monitor is plugged/unplugged. I have added the extra udev rules, but i don't know how to add the scripts that i want udev to run. I have tried ...
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4answers
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Automounting USB sticks on Debian

I'm running Debian Squeeze on a plug computer (so SSH only, no GUI) and what I'm trying to do is get it so that when a USB stick is plugged in, it gets automatically mounted. What I've done is ...
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Suggestions needed for udev, udisks, autofs, notification setup for a complete automounting solution on Linux

Continuing on Automounting plugged devices in linux, which left things a bit basic. Running Gentoo, I'm automounting a combination of local and network devices on my laptop with autofs-5.0.4-r5. Doing ...
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debian wheezy extreme boot delay

I migrated from Arch to Debian(wheezy) recently. Since Debian was still using sysVinit, I migrated to systemd, but following this. The system booted after a long init, using fallback LSB scripts for ...
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1answer
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reference whole disk (/dev/sda) using UUID

On my system (Debian), I can see the UUID identifier for all of my disks partitions (i.e. /dev/sda1, dev/sda2, ..) ls /dev/disk/by-uuid/ However, I don't see the UUID identifier for /dev/sda ...
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1answer
32 views

Stop interface name iteration?

I have a device that comes up as ttyACM0, however every time it is reset it iterates, so next time it will come up as ttyACM1 etc. Where might this lock be located so that I can remove it? I'd like ...
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1answer
193 views

cannot start chrome browser - bind failed: Permission denied

I am using grsecurity kernel with CONFIG_GRKERNSEC_SOCKET_SERVER enabled: [*] Socket restrictions [ ] Deny any sockets to group (NEW) [ ] Deny client sockets to group (NEW) [*] Deny ...
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In a buildroot system, understand the expected kernel -> udev -> hal/dbus communication

I am using a system based on buildroot. I wanted to have some system logs such as USB insertion/removal, disk alarms etc. to be raised on DBus system interface. So I selected DBus and eudev in make ...
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3answers
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Why do some Linux distributions still have /dev/ttyS0, ttyS1, etc., even though newer computers don't have such a serial port?

Many new laptop and desktop computers do not have 9-pin/25-pin serial ports. Why do many Linux distributions still contain /dev/ttyS0, dev/ttyS1 device files? Since udev can create the device files ...
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Unable to set node name using udev rules

I have a udev rule that has been working for years in Ubuntu versions up until now. I installed Kubuntu 14.04 and my rule no longer works. Actually, just the name assignment part no longer works. The ...
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1answer
686 views

Change value of USB “max_sectors” for an entire family of devices

I've been using Linux for a while, but only since I started using "recent" distros (ie.: anything non-Debian) I have started having I/O problems with most of my USB devices. Basically when trying to ...
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1answer
179 views

how to find out if kernel or udev created a device node?

Is there any way to find out who created a device node? If it has been udev or the kernel itself? In the specific case of mine, I have two webcams. Nodes created for them are /dev/video0 and ...
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1answer
100 views

List all udev rules (e.g. for a device)?

I want to know how I can list all udev rules. I know that in they can be potentially stored as lines (one line = one rule) in *.rules files in these directories /etc/udev/rules.d /lib/udev/rules.d ...
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1answer
25 views

Why do I get mail when I unplug my adapter?

Usually I only get the terminal output You have new mail in /var/mail/$USER after running certain upgrades but I've started getting it every couple days after running other commands, seemingly at ...
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1answer
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Pushing changes to driver repos

My understanding of dkms is that its a way to dynamically manage all connected/disconnected device drivers on a Linux system. If that's correct, then I have to imagine that it allows you to configure ...
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1answer
1k views

What's wrong with this udev rule?

I'm reading through this link in trying to make the appropriate rule to make the BSG device nodes have group ownership of wheel and permissions of 0660. This is the rule that I have: [user@mylinux ...
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2answers
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Cloned Linux system and /etc/udev/rules.d/70-persistent-net.rules

I set up an Ubuntu system and configured it properly, including defining eth0 in /etc/network/interfaces. I then imaged that system and cloned it on a new system. When I booted up the system the ...
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Can I masquerade a kernel uevent?

What I think happens From my understanding this is what happens when I connect a USB device to my computer: Kernel recognizes that I plugged in a USB device Kernel setups the very low-level things ...