The kernel's device manager, responsible for the contents of /dev.

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Why can't my udev rules rename kernel device nodes after upgrading from 12.04 to 14.04

In Ubuntu 12.04 I wrote the following udev rules to fix the /dev name of a USB RF remote control. These were: KERNEL=="event[0-9]*", ATTRS{name}=="BTC USB Multimedia Cordless Keyboard", ATTRS{phys}==...
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149 views

Circumventing MacBook Pro's motion sensor using /dev/input/js0 as a joystick

I'm on a MacBook Pro 8,1 running 14.04 and I've never plugged in any device with a joystick to my laptop. When I was trying to fix an input problem I was having, I checked /dev/input/js0 thinking that ...
2
votes
2answers
344 views

Commands not executing in shell script run by udev

I'm having trouble using udev to run a shell script that backs up my hard drives to an external drive whenever the external drive is connected via USB. Everything works except the actual call to rdiff-...
3
votes
2answers
292 views

udev script does not start when event happen

I was annoyed that every time I connect my hdmi cable I need to manually change the sound setting. I started looking into udev rules, what I came out with are these two files: /etc/udev/rules.d/99-...
14
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1answer
1k views

Only use Mass Storage devices on a selected USB port - how?

On a given USB port, I only want to accept USB Mass Storage capabilities, and nothing else. No HID devices, no Bluetooth adapters, no RS232 converters, nothing. Is there a way to do this e.g. using ...
0
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1answer
220 views

How to know where in /dev/ is a USB keyboard loaded?

To be precise, when you plug in a USB storage device, it is loaded in sd something, but where is a usb keyboard loaded in /dev/?
2
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1answer
2k views

libusb couldn't open USB device /dev/bus/usb/002/006: Permission denied. libusb requires write access to USB device nodes

I am connecting my FTDI Device with Laptop USB. I was following all the steps given in the link How to build libftdi git under Linux But after installing.. When I was running ./eeprom it is throwing: ...
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350 views

Ubuntu 14.04 HDMI UDev Rule

I have tried multiple variations to this script but I cannot get it to work. The UDEV Rule fires the script and the script exectutes but simply does not change the audio profile. If I run the script ...
0
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1answer
189 views

Swapping Caps Lock and Ctrl via udev

I want to swap Caps Lock and Ctrl. My solution so far is to edit /etc/default/keyboard and setting XKBOPTIONS="ctrl:nocaps" There are problems with this solution. First it doesn't work with virtual ...
2
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1answer
4k views

mounting galaxy s4 ubuntu 14.04

The problem is as simple as the title, I can't mount my rooted galaxy s4 phone(newest update 4.4.2) on my laptop(running Ubuntu 14.04 LTS). The error message is a consistent: Unable to open MTP ...
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0answers
59 views

Unknown Floppy Drive detected

After a reboot, Ubuntu (and Windows) detect an external floppy drive that isn't even there!It's not a big problem to find a new floppy drive that I can't access, but it really looks strange in the ...
12
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1answer
1k views

USB sticks not accessible & system hangs at shut-down: related to older hardware?

Please notice the three updates at the end of the post. Original problem I installed Lubuntu 14.04.1 on an older Acer Travelmate 4500 using the forcepae option and adjusting upowerd.py according to ...
3
votes
1answer
3k views

chroot: Ubuntu 14.04 - udev upgrade Problems!

im running Ubuntu 14.04 (x86) on a OpenELEC (x64) host system. Everything worked great until a few days ago when it tried to upgrade the "udev" package after running apt-get upgrade. apt-get upgrade ...
2
votes
1answer
665 views

How to detect touchscreen devices from a script?

I'm looking for a reliable way to detect if a laptop has a touchscreen device from a script. I know I can parse the output of: $ xinput --list ⎡ Virtual core pointer id=2 [...
2
votes
1answer
379 views

Cant change name of internal webcam via udev rules Ubuntu 14.04

I need to change device name of internal camera Rule: ACTION=="add", SUBSYSTEM=="video4linux", ATTR{name}=="UVC Camera (046d:0825)", NAME="video2", SYMLINK="usb/video", RUN+="/usr/bin/forudev" I ...
1
vote
1answer
644 views

How do disable the CD-ROM for all users?

I want to disable CDROM/CDRW/DVDROM/DVDRW for everyone in Ubuntu 14.04.1 desktop 64-bit edition. I have tried following but not worked: Removed user from /etc/group, as following: cdrom:x:24: as ...
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0answers
539 views

How can I remap the keys/keycodes of a usb foot switch on SystemD?

I was using the old udev rules to remap my usb foot switch key(the default is the keycode 36 -b :S) to Alt_L. Previosly I created a udev rule and a xmodmap file. But i'm trying the systemd now, and ...
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vote
2answers
5k views

How to make my udev rule work

My USB device keeps changing its number in its name /dev/ttyUSB?. I have seen this and this, and tried to do the same with no luck. gauthier@sobel:/etc/udev/rules.d $ udevadm info -a -p $(udevadm ...
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1answer
3k views

How can I run code whenever a USB device is (un)plugged, without requiring root permissions?

I have a script that I wish to run whenever I plug/unplug a mouse or keyboard to my USB port. There is already plenty of documentation on how to configure udev rules to run arbitrary scripts when a ...
2
votes
1answer
4k views

Udev error while upgrading

I update and upgrade my ubuntu 14.04 server. Update is successfull but i get this error while upgrading : apt-get upgrade Reading package lists... Done Building dependency tree Reading state ...
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2answers
5k views

Explanation of 70-persistent-net.rules script

I am a newbie in scripting language.I will like to understand a script that was written by someone else.Kindly explain to me what this line of script does: IF=`cat /etc/udev/rules.d/70-persistent-net....
2
votes
1answer
125 views

Linux - keyboard with phone-like typing

I have a USB keyboard extension with just number-keys: I need to write chars (A to Z) on this keyboard. My idea is write the way you can on some phone keypads, where each number is mapped to ...
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0answers
305 views

What is the Purpose of /etc/init/udev-fallback-graphics.conf in Ubuntu 14.04?

What is the purpose of the upstart configuration /etc/init/udev-fallback-graphics.conf (shown below) in Ubuntu 14.04 LTS? # fallback-graphics - take actions to initiate fallback graphics # # if we ...
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0answers
396 views

How to distinguish between identical USB's

I have this system where I have 8 USB RFID readers which I would like to distinguish from one another. Here's a snippet from lsusb Bus 002 Device 011: ID 05fe:1010 Chic Technology Corp. Optical ...
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2answers
3k views

My custom udev hwdb rule doesn't work

I'm using ubuntu 14.04 installed in EFI Mode, I tried to write simple udev rule which for all external USB keyboards will map capslock for escape. I use a lot of vim and plug and unplug keyboards ...
2
votes
2answers
660 views

How to disable automount of an harddrive?

I am working on a project, and for this I need to disable the aumounting of hard-drives in Ubuntu both at startup and when I plug an hard-drive. I tried one solution with "edit-conf" disabling ...
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0answers
375 views

How to mount USB drive as user writable

I want to mount my USB hard drive as myself, or in my group, whatever it takes to be able to move stuff onto the disk without sudo. I have tried setting up a rule in /etc/udev/rules.d/mountasuser....
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1answer
1k views

missing sbin/hotplug in Ubuntu

Im using Ubuntu and I cannot find /sbin/hotplug. Did anything replace it? How does it handle hotplugging? I read that kernel calls it for notifying user space when an hotplug event happens. I also ...
1
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2answers
318 views

Execute script on insertion of sdcard

Since I want some union mounts to be created, once a sd card is found in my system, I wrote the following udev my.rules: ACTION=="add", KERNEL=="mmcblk0", SUBSYSTEM=="block", \ RUN+="touch /tmp/...
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vote
1answer
2k views

How to create persistent symbolic links and fix permissions to use the raw print?

I have Xubuntu 14.04 and I want create persistent symbolic links for my USB printers. In other hand, I can't write to these devices: $ ls -l /dev/usb/lp* crw-rw---- 1 root lp 180, 0 jun 25 14:17 /dev/...
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vote
1answer
868 views

Disable all USB Storage devices and enable some devices based on Vendorid

I tried by adding below udev rule ACTION=="add", SUBSYSTEMS=="usb", RUN+="/bin/sh -c 'for host in /sys/bus/usb/devices/usb*; do echo 0 > $host/authorized_default; done'" ACTION=="add", ATTR{...
5
votes
1answer
626 views

Get keyboard scancodes in Ubuntu 13.10

I'm trying to find out the scancodes for a set of foot pedals so that I can rebind them to more useful keys. In older versions of Ubuntu I was able to do this using /lib/udev/keymap as discussed here, ...
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0answers
651 views

Preventing pop-up dialogs when connecting an MTP device

I'm using Lubuntu 14.04 with a Samsung Galaxy S3 running Android 4.3. Each time I connect my phone via USB, I get the following dialog: Unable to open MTP device '[usb:002,023]' A few moments ...
1
vote
1answer
740 views

Gamepad detected by lsusb but not by PCSX or jstest-gtk in Ubuntu 14.04

I had been using a PS3 gamepad on PCSX for a while on Ubuntu 14.04, but realized it stopped working today. The controller is detected by lsusb on Terminal, but it does not appear in PCSX or jstest-...
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votes
4answers
5k views

Make the zoom slider of Microsoft Natural Ergonomic Keyboard 4000 and 7000 scroll up and down, in 14.04 (Trusty)

I tried to use this tutorial to make scroll switch work on my Microsoft Natural Ergonomic Keyboard 4000. But I face following error: sudo: /lib/udev/keymap: command not found I have udev version ...
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0answers
393 views

3 Modems HUAWEI E220 - Finding diferent data to make permanent USB Ports

I Have 3 Modems Huawei E220 USB connected on the same hub in the back USB Motherboard Ports. After they are connected they work very well - no conflicts. When I restart the system, all USB ports ...
2
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0answers
502 views

Trying to create UDEV rule to mount removable drive exfat partition

So I am trying to create a udev rule to automatically mount a drives exfat partition to /media/offsite. My goal is to automatically mount a drive to /media/offsite and then kick off a .sh script to ...
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0answers
253 views

udev is creating wrong disk id symlinks

I have lots of HDD's on my system, all but one are on USB. Here's my output from ls -la /dev/disk/by-id/: ata-INTEL_SSDSC2CW060A3_CVCV2041010Y060AGN -> ../../sdc ata-...
1
vote
1answer
58 views

Failure during boot with service failures (slowing down PC)

While Ubuntu is starting and showing it's boot screen an error occurs for several times saying: failed to execute 'lib/udev/socket:4/org/freedesktop/hal/udev_event' 'socket:0/org/freedesktop/hal/...
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0answers
62 views

Change automatically keyboard layout

I use custom keyboard layout. I have this script for setting it: #!/bin/bash setxkbmap -verbose us -variant altgr-intl xmodmap -verbose ~/.myxmodmap The problem is, that plugging the keyboard will ...
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vote
2answers
474 views

3m ergo mouse wheel scrolling 14.04

I hope someone can help with this. Previously in Ubuntu 12 I was able to follow these instructions to get my mouse wheel to work. In 14.04, the hal-* functions no longer work and I cannot seem to find ...
3
votes
0answers
282 views

Assigning ehci-pci to an Epson V33 scanner instead of xhci_hcd

I have recently installed Xubuntu 14.04 on two computers. Computer A is a DELL Aptitude E5430 laptop, whereas Computer B is a home-mounted desktop, with an ASUS H87-Plus motherboard. I have been ...
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votes
1answer
181 views

Run “sudo service udev reload” without root priviledges

I have a script that occasionally needs to run the command "service udev reload" but cannot as it needs root access. I don't want to stay logged in as root all the time, so I'm wondering if there is a ...
0
votes
1answer
527 views

udev rule not working

I cannot figure out why this rule wont fire: ACTION=="add", KERNEL=="sdb", SUBSYSTEMS=="scsi", ATTRS{model}=="Elements 1048*", RUN+="/usr/bin/mysync.sh" here is the additional info looking at ...
3
votes
2answers
1k views

Udev - How to change device group?

By default, all hard drive and usb drive devices belong to group "disk". I want to change usb drives to group "adm". I verified the ID_BUS $ udevadm info -q all -n /dev/sdb | grep ID_BUS E: ID_BUS=...
0
votes
1answer
50 views

Ubuntu Server: Boot Messages on terminal 7 (video) Why?

I use only text terminals in ubuntu server. Especially at boot time :) I've turned off plymouth splash screen and I get boot messages on terminal 1. But after couple of messages, active terminal is ...
4
votes
2answers
6k views

Why do my udev rules run if I use udevadm trigger, but NOT at boot time?

I'm having trouble with udev rules not running. Here's an example: I have a rule /etc/udev/rules.d/99-test.rules which contains: ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x8086", RUN+="/sayhi"...
6
votes
1answer
503 views

How to run a script when password is entered at the lock screen?

To toggle the enabling/disabling of my notebook's touchpad according to connected USB mouse, I used touchpad-indicator, which runs a daemon to monitor connected devices and take appropriate action. ...
1
vote
1answer
574 views

ID_FS_LABEL in udev

What is ID_FS_LABEL in udev? Also why doesn't it show up when I execute this command : sudo udevadm info --root --name=/dev/sdb The output that I get for the above command : vineet@vineet:~$ sudo ...
72
votes
5answers
17k views

I can read from /dev/null; how to fix it?

I read the Wikipedia article on /dev/null and was playing around by moving files to /dev/null. For this I created a test_file and put some contents in it: $ touch test_file $ echo "This is written ...