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

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128 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
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2answers
154 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: ...
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1answer
34 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 ...
2
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0answers
677 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", ...
6
votes
1answer
312 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. ...
0
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1answer
107 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 ...
63
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5answers
9k 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 ...
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0answers
163 views

What is the difference between /dev/tty* and /dev/bus/usb/001/002?

When I plug in a device that uses the LUFA USB framework (or any USB<->serial peripheral), Ubuntu creates a /dev/ttyACM* device file. It also creates a /dev/bus/usb/001/002 file and a ...
2
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1answer
100 views

Usb udev rule never worked for me

I try to have a USB device recognized as being part of my user group. So I don't have to issue a sudo during development time when I debug my program which access those devices. Especially painful ...
1
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1answer
325 views

Identify udev subsystems and devtypes

I have to write a python script to monitor for usb mass storage devices. To successfully filter the required media it must be identified by its subsystem and DEVTYPE. Does anyone know the required ...
1
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0answers
173 views

udev rules for pendrive (/dev/sdb1) to change owner, group, permissions

Ubuntu 13.10 - Need udev rule to change owner/permissions for /dev/sdb1 (usb pendrive) when plugged into computer. All combinations tried so far under /etc/udev/rules.d/99-pendrive have failed to ...
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1answer
232 views

Multiseat in Ubuntu 13.10

I have a Ubuntu 13.10 Desktop machine with one Intel Integrated graphic card and one PCI graphic card.I want to implement Multiseat (2 seats) configuration with own set of keyboards, mice, and ...
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0answers
61 views

Alternative for removing ignore_device option in udev?

Recently, the option ignore_device has been removed from udev rules. What is the alternative to deny a device to mount or to connect to system in udev rules?
0
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1answer
115 views

Why does my udev rule run several times?

I want to when I plug an usb device to my laptop, a script will be run just one time. So I use the udev rules system in UBUNTU 12.04. I wrote the below udev rule: ACTION=="add", SUBSYSTEMS=="usb", ...
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0answers
265 views

How to write a udev rules file for /dev/sda

How to write a udev rules file to change permission of /dev/sda for permanent change of ownership to normal user (even after reboot).
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0answers
41 views

After converting KVM machine to native environment, system boot is slow

A coworker set up a Ubuntu 12.04 system that will eventually be used for booting without a disk via the network with KVM. Everything works as it should on native hardware, except a delay of 113-114 ...
0
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1answer
174 views

How to require mount with password of other internal hdd partitions for all mount-style applications (with udev)

I am trying to block access to other partitions with different file systems on the same physical hdd (layout: gpt) by preventing any partition mounting without requiring a password. FSTAB takes care ...
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0answers
215 views

Ubuntu Server 12.04: Boot hangs with error "udevd[538] inotify_add_watch(…) failed: invalid argument

I'm currently faced with the following situation: when rebooting a Ubuntu 12.04 LTS server after updating (it ran perfectly for a year or so, I updated it around two months ago and rebooted with no ...
1
vote
1answer
404 views

auto rip CD with morituri (or launch custom script on CD insert)

How can I automaticaly start ripping my CD when I insert a CD. There used to be a custom command option in the settings where you could run a custom command on CD insert. The I could use a bash script ...
2
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0answers
170 views

LVM logical volumes do not activate on boot on 13.10

I am running an UbuntuGNOME 13.10 and I set it up without an LVM during the installation process. I am now running it with to encrypted partitions, one is containing a LVM. This all works fine, ...
0
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1answer
327 views

udev + xrandr to set display gamma when plugging in a display works briefly, but gets overridden

I'm using a script like this to set the gamma values of my laptop screen and external monitor: #!/bin/bash export DISPLAY=:0 export XAUTHORITY=/home/peat/.Xauthority xrandr --output LVDS1 --gamma ...
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0answers
152 views

Egistec ES603 fprin_demo Shows No Device found

On ubuntu 12.04 LTS amd64 I have used the following commands to get fprint_demo. sudo apt-get install libfprint0 fprint-demo libpam-fprint gksu-polkit wget ...
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0answers
201 views

Simulate USB reconnect to change device number

I have a PS3 controller strangely doesn't work if it's connected as /dev/bus/usb/006/002. If it gets assigned any other device number (like /dev/bus/usb/006/003) then it starts working (which can be ...
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0answers
159 views

PS3 controller only works after unplugging and plugging in again

I use xboxdrv for my PS3 controllers which I connect via USB. I start xboxdrv with the following command (using daemon because I don't have the controllers connected all the time): sudo ...
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0answers
45 views

Where is the udev error log located?

I'm trying to add some rules to udev. I've added usb_log="info" in /etc/udev/udev.conf, but I can't figure out where the messages end up. They used to be in syslog, didn't they? I just installed ...
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0answers
278 views

How to store LXC container's files in another folder

Well the answer seems to be given on https://help.ubuntu.com/13.04/serverguide/lxc.html#lxc-hostsetup page under Using a separate filesystem for the container store title but it doesn't work for me. ...
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0answers
91 views

Ubuntu 13.10 - how to apply kernel patch?

In Ubuntu how can i change this modifications safely? One manufacturer given me the PATCH to apply. "faulty USB2 cameras on USB3 Linux systems. patch" --- linux/drivers/usb/core/hub.c.orig ...
1
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1answer
589 views

udev rules seem ignored; can not prevent modem manager from grabbing device

I am trying to prevent modem manager from running when I plug my cell phone into a USB port. I have tried to add a custom rule with udev, but my custom rules seem ignored. I created a file ...
1
vote
1answer
345 views

Automatically disable mouse acceleration whenever mouse is plugged

I have a laptop and I often use a Logitech G5 mouse with it. I don't like acceleration while using the mouse. Thus I have to disable the acceleration every time I plug the mouse. Is there a way to ...
0
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1answer
140 views

Connect K8055n Experiment Board to Ubuntu

I purchased a K8055n Velleman Experimental Board and for some reason every program I run or if I try to access the board I get the following error: Could not open the k8055 (port:0) Please ensure ...
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0answers
91 views

evdev error opening gtco device

I've got an eInstruction electronic whiteboard which is handled by the gtco kernel module. The event layer looks sane enough to me. Out of the box, X.org didn't use that device, so I added the ...
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0answers
98 views

/var/log/boot.log incomplete

My core issue is that something is causing udev to spew thousands of messages during boot, slowing down boot by 10 minutes. My interrim issue however is that there are so many messages during boot ...
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0answers
80 views

Tie via UDEV an external video webcam to /dev/video5 for Apache Server webcam streaming

My aim is to nail my Logitech C270 to /dev/video5 and my old less capable internal cam to /dev/video0 via setting UDEV rules as follows in /etc/udev/init.d/26-video-persistent.rules/ ...
0
votes
1answer
4k views

Huawei e173s 3G USB dongle won't switch into modem mode

Output of lsusb | grep Huawei is Bus 003 Device 003: ID 12d1:1c0b Huawei Technologies Co., Ltd. E173s 3G broadband stick (modem off) I've checked if usb_modeswitch is set up properly as per ...
0
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2answers
465 views

Doubts about symbolic link Printer Brother all-in-one [Solved]

I have a doubt and confusion regarding symlinks on settings of "Brother MFC-660CN printer" I installed the drivers through an installation file of the website Brother The file is ...
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0answers
273 views

systemd-udev errors on startup

Ubuntu 13.10, HP-compaq 8510w laptop. I keep seeing the following message on startup and in dmesg: systemd-udevd[304]: error opening ATTR{/sys/devices/pci0000:00/0000:00:1f.2/ata5/host4 ...
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0answers
90 views

Problem with cryptdisks-udev service

I am getting an error when I run 'puppet resource services' that complains about the cryptdisks-udev service. The exact error message is as follows: status: Unknown parameter: DEVNAME The error ...
1
vote
1answer
849 views

USB Mount Autorun a script using udev

I've spent a lot more time than I was expecting and was hoping I could get some help debugging. My goal is to sync files between my documents and my usb drive as soon as it is mounted. I've ...
0
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0answers
171 views

HD serial at /dev/disk/by-id

I am building a function that has to read the HD serial number, and it cannot run external applications or require root privileges. I am aware that I can list the contents of this folder: ...
0
votes
1answer
1k views

For pulseaudio what does tsched do (and what are the defaults)?

If I modify /etc/pulse/default.pa and change this line: load-module module-udev-detect to: load-module module-udev-detect tsched=0 I am clearly disabling tsched. Similarly if I change the line ...
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0answers
42 views

UDEV: how to match SYMLINK during remove event?

I am using libusb to contact with a printer. And I am writing a rule for udev to remove the printer when it is disconnected. I use symlink to indicate the device. But when removing, the rule is not ...
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vote
2answers
200 views

Why would 70-persistent-net.rules have no effect?

I've got a saucy server with a lot of NICs and they end up with weird names like "rename19". I know interface names can be changed by modifying the /etc/udev/rules.d/70-persistent-net.rules file. The ...
0
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0answers
78 views

How to map Xrandr output names to /sys/class/drm display names?

I am using the 'udev library libudev' to detect connection and disconnection of displays (monitors) on my system. The display names reported by udev are found in the /system/class/drm directory on my ...
0
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0answers
136 views

12.04 udevd[1519]: failed to execute '/lib/udev/modem-modeswitch' after update

After update some package (I can't remember and I don't know how to check which have just update) and reboot, I can't restart unity or compiz. Here are some output while I check system in recovery ...
0
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1answer
2k views

Adding to a file: /etc/udev/rules.d/51-android.rules

I am a complete n00bie, so please be gentle.... I have just started using Eclipse with the Android ADT setup and I attempting to set up a device for development. I have created the following file ...
1
vote
1answer
2k views

How to detect insertion of DVD disc?

In particular, how to catch it for the purposes of automounting the DVD filesystem? Update in response to Oli's answer: udev seems to be able to detect the insertion of DVD, as demonstrated by ...
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0answers
372 views

udev rules for multiple usb game controllers (including dual controllers)

Using XBMCbuntu Eden... I'm having trouble creating udev rules for my controllers. I have a dual arcade stick that has two separate usb connections, and I am having no trouble writing the udev rules ...
0
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0answers
209 views

Deactivate defect laptop keyboard ubuntu 12.04

My Notebook Keyboard (T430) is defect and spawns more or less random keypress events. So I'm searching for a way, that linux ignore all input that comes from this device. My guess is that I have todo ...
0
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1answer
74 views

How to run a script when I connect a device?

new Linux user here (Ubuntu 12.04)... I've been looking on google and found some scripts that would make what I'm about to ask easier but what I would like to do is write a script that automatically ...
0
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1answer
195 views

Reducing the size of udev filesystem

I have this line in the output of df -h: udev 16G 4.0K 16G 1% /dev What is this thing doing? Do I need it, and if not, how can I reduce the size of it? As far as I know, this ...