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

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Will a usb key have the same name everytime I mount it?

I have a usb key which will be used to save data on it daily, via a bash script. I managed to mount it for a specific user to be able to write folders in it using the command mount /dev/sdc1 ...
2
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0answers
21 views

Help with udev rules my Keyboard thinks it's a Joystick

I'm running Archlinux and I have a weird problem my "Microsoft Wired Keyboard 600" gets picked up as a Joystick and a Keyboard for some reason. Note: Output trimmed ─$ xinput list Virtual core ...
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1answer
30 views

Reload network interfaces without rebooting

I'm doing a BASH script for Arch Linux in a Raspberry Pi 2. The thing is that in some point I'd like to reload the network interfaces without reboot and have my new named network interfaces (en0 and ...
3
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1answer
28 views

Is there any way to prevent a bad drive from disappearing from /dev?

I'm trying to recover a partition on a bad drive with ddrescue. I run: $ sudo ddrescue -r -1 -v /dev/sdd3 OUT.img dd_rescue_logfile and it seems to do great for a while, but after about an hour, ...
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24 views

Binding /run/udev in Debian chroot [closed]

I was trying to solve the problem mentioned here: Running (X) Xfce4 in Debian chroot The solution he mentioned was to "bind /run/udev". As far as I see, it is suggested that binding host's /run/udev ...
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0answers
27 views

Debian upgrade from Wheezy to Jessie fails on Amazon EC2

I have searched and read other debian upgrade threads, but my situation doesn't seem to match that described in the other questions on this topic. I have a t2.micro instance of debian running on ...
0
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1answer
35 views

udev+udisks2: udisksctl gives 'Error looking up object for device'

In Debian Wheezy I had a special rule for my ntfs usb hdd. When it is inserted it is mounted in /media under a specific sub-folder. ACTION=="add", SUBSYSTEMS=="usb", ...
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24 views

Starting a script when a certain usb is inserted problems

I want to start a script when a certain usb flash drive is inserted. I had a python script in my home folder "test.py", I ran lsusb and found the vendorid and productid, I went to udev and made a rule ...
2
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1answer
19 views

Udev hwdb rule does not work

I am switching from Ubuntu to Arch Linux and encountering the issue that a udev hwdb rule that has worked until now does not work anymore. The only obvious difference between the systems is that ...
2
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1answer
16 views

How to make CUPS show a USB printer as disabled when it is disconnected?

I'm using CUPS on an ARM single-board computer to share a USB printer over the network. To conserve power, the printer is usually powered off via a remote-controlled power outlet and only switched on ...
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0answers
32 views

USB 56k modem not detected

I have this USB 56k modem which I'm using to write some home automation software that will let me know when my home phone is ringing. My software works on my Ubuntu 14.04 LTS laptop, with my modem ...
0
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1answer
39 views

Device shown using lspci but udev not loading the driver

My nic shows using lspci -v but udev is not loading the driver for it. Links to screenshots of diagnostic output are below. dmesg insmod lspci pacman -Qi ls /sys/class/net uname -a original ...
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1answer
26 views

How to avoid duplicate connection names? (32) Connection 'Auto Ethernet' is already active on enpXXX

Is there any way that I can make networkmanager to assign some unique names or device derrived name instead of Auto Ethernet so that we can avoid the names conflict? After I've upgraded to Ubuntu ...
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0answers
16 views

Ubuntu 14.04 - Multiple Griffin Technology Powermate Knobs

I am running Ubuntu 14.04, and I want to run multiple griffin powermate knobs: https://store.griffintechnology.com/powermate. I want to map them to different keys other than audio control. I want to ...
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0answers
37 views

figuring out the e “manufacturer” and “product” attributes using udev for pendrive

I saw Writing raw images safely to USB sticks On Debian though, get nada from that command :- [$] udevadm info -a -p $(udevadm info -q path -n /dev/sdb)|grep -iE "manufacturer|product" [$] I ...
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11 views

udev usb stick device list

we have 2 different yocto distributes. 1) ARM Kernel 3.10.53 2) X86 SMP Kernel 3.10.0 if we add a usb stick to the ARM system we get the different udev Messages. usb/usb_device usb/use_interface ...
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1answer
13 views

How to specify a specific product in udev hwdb file?

I'm trying to remap the buttons on a peripheral that incorrectly has its buttons mapped to F keys. To remedy this I'm trying to use a udev hwdb file to remap keys only on specif devices. So far my ...
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0answers
17 views

Attributes not available in udev

I'm attempting to write a udev rule for a USB device, however I'm having trouble matching the ATTRS{*} attributes in my rules. After a little debugging using udevadm info, I've found that none of my ...
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12 views

Detect power_supply online status for different device in udev rule

In order to save battery power, I enable runtime PM for all devices using a variant of this rule set: ACTION!="add", GOTO="powersave_end" SUBSYSTEM=="usb", GOTO="powersave" LABEL="powersave" ...
3
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1answer
44 views

What ENV variables can be set in udev rules?

Recently I discovered the ENV{REMOVE_CMD} variable, which removes the need for using the ACTION=="remove" match in the case you need both add and remove. I was trying to find some info on other useful ...
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22 views

An help with udev,want to force usb stick to use my options

I want to force mount of usb stick with async and noatime option,so i put on udev this rule SUBSYSTEM=="usb",ATTR{idVendor}=="067b", ATTR{idProduct}=="2517", ACTION=="add", ...
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1answer
28 views

How to remap an F key on a specific Keyboard?

I have a peripheral attached that is actually not a keyboard, but all of its buttons are being treated as F keys, they all send the same scancode and keycode as the standard F keys (based of of ...
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1answer
60 views

Files in folder /run/udev/data

Does someone know, when and how the files in this folder /run/udev/data are generated. I ask because I have a program, which needs udev in jail. But the version in jail is newer (version 208) than ...
1
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1answer
52 views

systemd : write a .service daemon for setting up swap and fs in zram

I recently acquired a laptop with a ssd and in order not to weigh too much on the ssd (which I was told had a limited number of write cycles), I decided to write a systemd unit file for setting up a ...
1
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1answer
67 views

How to prevent UDEV rules assigning a device to a specific set of names

I have some UDEV rules for a RAID array; 10 hard disks are assigned names from /dev/sda to /dev/sdj. The disks can be absent at any time. How do I write a UDEV rule to prevent a device such as an ...
0
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1answer
35 views

Disk ID in chroot / jail

When I print out all information about a disk /dev/sda on my host system, then I get this sort of information (I got this information with command udevadm info --query=all --name=/dev/sda): P: ...
4
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1answer
45 views

What is the purpose of a udev rule?

I'm being asked to add a udev rule for a new USB device I purchased. There doesn't seem to be a dirt simple explanation for why this is necessary or valuable to do. To always map a device to the ...
0
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1answer
34 views

Why do the rules in udev/…/rules.d have numbers in front of them

Is it just for convenience or is there some reason for it? Example: cat /etc/udev/conf.d/rules.d/98-kexec.rules
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53 views

Attributes from various parent devices in a udev rule

I have some trouble understanding how the udev device attributes from different parent devices are evaluated in a rule. I want to write a rule for a specific serial usb device (HUAWEI Modem), with a ...
2
votes
1answer
73 views

Udev rule not setting group

I'm trying to write a udev rule to change the group on my MSP-FET430UIF USB programmer. This is what I have so far (filename /etc/udev/rules.d/40-ti-fet430.rules): SUBSYSTEM=="usb", ...
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50 views

What can cause a usb port speed change?

I have an instrument connected via usb to a OpenSuse (11.1 32) computer. Following the vendor instructions, I've added one rule to udev: ATTR{idVendor}=="0e0d", ATTR{idProduct}=="0003", MODE="0666" ...
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30 views

jmtpfs fails when run from udev

I'm running Arch Linux with version 3.15.5 of the kernel (it's downgraded due to some unfortunate dependencies). I've been trying to get my Nexus 4 to automount using udev and jmtpfs 0.5 ...
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1answer
41 views

udevadm does not show expected information

I'm building my own Embedded Linux distro using bitbake . I added udev in the list of dependencies (RDEPENDS). I noticed that the output of: udevadm info --query=property --path=/sys/block/sda is ...
2
votes
1answer
160 views

Change hidraw device from mouse to joystick

I have a wireless PS3 controller adapter that is plugged in to my Ubuntu 14.04 box. It has 2 modes: XInput and DInput, which as far as I can tell, it just passes two different vendor/product id's ...
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2answers
108 views

How to debug an udev rule (in /etc/udev/rules.d/…)

I'm creating a new basic rule /etc/udev/rules.d/10-myrule.rules containing: KERNEL!="sdb*", GOTO="auto_mount_end" ACTION=="add", RUN+="/usr/bin/mount /dev/sdb1 /media" LABEL="auto_mount_end" I ...
4
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1answer
68 views

How to detect if USB device is bootable in udev?

I'm trying to write a udev rule to not mount USB devices plugged into my system if they're bootable, but I don't know how to specify in udev if a device is bootable in a rule. Is that possible? If so, ...
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1answer
59 views

Script executes differently if run from udev

I'm having an issue with a script that seems really weird; it appears to stop executing prematurely when run from udev, but not when I run it manually from the command line. I've tried troubleshooting ...
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0answers
120 views

Issues while eMMC partitioned using sfdisk

I am writing firmware(MLO,u-boot.img, uImage(ver 3.12), dtb, rootfs.tar.gz) programming script for am335x based custom board. Rootfile system is to be put onto the eMMC. Firmware programming script ...
1
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1answer
113 views

udev keyboard remapping with hwdb for secondary keyboards

I have a laptop, and I save the following to /etc/udev/hwdb.d/90-custom-keyboard.hwdb keyboard:usb:v*p* keyboard:dmi:bvn*:bvr*:bd*:svn*:pn*:pvr* KEYBOARD_KEY_1a=a KEYBOARD_KEY_1b=b and run $ ...
4
votes
1answer
61 views

Is it possible to set interface name permanently in Raspbian?

I'm using 2 wifi dongles. First one is used to monitor and second one is used to access internet. Even if I changed /etc/udev/rules.d/70-persistent-net.rules as below, at startup sometimes wlan0 ...
4
votes
1answer
112 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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0answers
51 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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1answer
51 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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0answers
89 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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56 views

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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1answer
213 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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1answer
89 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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0answers
91 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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72 views

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
123 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 ...