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

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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 ...
2
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0answers
33 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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0answers
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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 ...
4
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3answers
11k views

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 ...
9
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2answers
676 views

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 ...
2
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1answer
125 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 ...
3
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1answer
375 views

Udev rule to match multiple node USB device

I have a 3G/GPS device that creates 5 tty nodes, although it's only one physical USB connection. Basically, a multi port usb-serial adapter. I'm trying to create some udev rules to make sure those ...
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261 views

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
74 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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2answers
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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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1answer
97 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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3answers
292 views

Udev- How do I find out which subsystem a device belongs to?

For example, I have device /dev/sdb. How do I find out it's udev subsystem?
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1answer
123 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", ...
2
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1answer
184 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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3answers
2k views

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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0answers
86 views

Pulseaudio startup fails on VPS as non-root

I installed pulseaudio, but I can't manage to run it as any non-root user. pulseaudio -vvvv output is (relevant parts with errors): D: [pulseaudio] cli-command.c: Checking for existence of ...
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2answers
3k views

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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5answers
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How can I detect when a monitor is plugged in or unplugged?

Is there any event that is triggered when I plug in or out an external monitor into the DisplayPort of my laptop? ACPID and UDEV don't react at all. I'm using onboard graphics on an intel chip. Here ...
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0answers
409 views

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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0answers
238 views

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 ...
3
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1answer
578 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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2answers
66 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 ...
5
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1answer
885 views

Difference between /dev and /sys/class?

What is the difference between the device representation in /dev between the one in /sys/class? Is one prefered over the other? Is there something one offers and the other doesn't?
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How to reload udev rules without reboot?

How should one reload udev rules, so that newly created one can function? I'm running Arch Linux, and I don't have a udevstart command here. Also checked /etc/rc.d, no udev service there.
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1answer
660 views

USB connect/disconnect notification

I use Linux Mint 13 MATE, and I'm trying to set up notifications when I plug/unplug devices. First of all, I found udev-notify package, but unfortunately it almost doesn't work for me: it works for ...
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178 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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2answers
623 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 ...
2
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1answer
565 views

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
1k views

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
70 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
5k views

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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4answers
1k views

How to run long time process on Udev event?

I want to run a ppp connection when my USB modem is connected, so I use this udev rule: ACTION=="add", SUBSYSTEM=="tty", ATTRS{idVendor}=="16d8",\ RUN+="/usr/local/bin/newPPP.sh $env{DEVNAME}" ...
4
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1answer
247 views

lshw lists my drive but it has no /dev file

Ive just got a dedicated server which has 2x 1TB HDD. However when I type df -h I get the following: [root@sd-56537 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 916G ...
3
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1answer
274 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.
4
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2answers
391 views

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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1answer
45 views

Which udev rule triggered?

a. Is it possible to find out, which udev rule triggered as soon as some USB/serial device plug-in or plug-out ? b. Is it possible to reload one specific rule out of many rules, without device replug ...
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3answers
1k views

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 ...
3
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1answer
429 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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2answers
77 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
118 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", ...
3
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2answers
95 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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vote
1answer
425 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 ...
32
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3answers
3k views

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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2answers
146 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 ...
5
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1answer
816 views

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 ...
4
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2answers
393 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 ...
5
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1answer
311 views

trigger udev rules from systemd

I have one of those hdds, that have a very aggressive power management. To prevent load cycles from rising in to critical numbers I wrote an udev rule: SUBSYSTEM=="block", SUBSYSTEMS=="scsi", ...
4
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1answer
2k views

Udev triggers are not firing on insert of CF card into USB card reader (anymore)

I've got a udev rule that triggers a shell script that copies photos off my CF card when I insert the card into my USB card reader. This worked fine for a while. But after a recent upgrade it has ...
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0answers
149 views

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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1answer
1k 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 ...