Debian Configuration :: Udev Rules To Change R/W Permissions?

Mar 28, 2011

I'm trying to allow non-root account to use avrdude to program mucrocontrollers. There are many articles online about how to do that, but it seems not to work for me. Every time i try to execute avrdude it says "permission denied". Here's "$ udevadm info --name=/dev/bus/usb/002/011 --attribute-walk" says looking at device '/devices/pci0000:00/0000:00:1d.1/usb2/2-1':



However, after restarting udev, replugging the device, even rebooting the computer I still get "permission denied". The Vendor and Product match, so what's the problem?

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Debian Configuration :: Udev / Systemd Change Some Rules In 8.0

Apr 18, 2016

I have SSD drives without SCT support, because of this I want to tune /sys/block/device-name/device/timeout in order to force mdadm put these drives offline. So, I can see my drive like this:


Where can I tune /sys/block/device-name/device/timeout from 30 to 7 sec only for these drive? I don't want to use rc.local.

Can I create right udev rules for it in /etc/udev/rules.d?

I want to avoid any conflict with /lib/udev/rules.d.

Code: Select all# udevadm monitor --environment --udev
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing

UDEV  [9302.549485] add      /devices/pci0000:00/0000:00:01.2/0000:03:00.0/host0/target0:0:0 (scsi)

[Code] ....

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Debian Configuration :: Synaptics Udev Rules Ignored After Yesterdays Upgrade?

Apr 14, 2010

After yesterdays upgrade of Squeeze, my Synaptics touchpad's udev configuration is ignored on my EeePC. It was working fine before. Are there any changes in how it is supposed to be configured or is it just broken?

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Debian :: Use Udev Rules To Prevent HDDs To Change Device Instead Of Using UUID In /etc/fstab?

Dec 15, 2010

UUIDs make fstab hard to read, so.. Is it possible to use udev rules to prevent HDs to change device, instead of using UUID in /etc/fstab?

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Debian Configuration :: Udev Static Device Change From Wheezy To Jessie

Sep 9, 2015

I am using a 3rd party kernel driver that does not support udev properly. When I was using wheezy I placed the required device files in /lib/udev/devices.

The udev in jessie does not appear to support this. Is there any way to have udev create these device files or will I have to create then using a script at boot-up?

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Ubuntu :: Can't Create File /etc/udev/rules.d/70-android.rules?

Jun 19, 2011

I need to create filename 70-android.rules in the directory /etc/udev/rules.d/I have Adm privileges in my user account properties, but when I use sudo to create this file the Ubuntu OS does not allow me the privilege... I am running Ubuntu 10.04 LTS and here's the Terminal output below:daddy@gatomon-laptop:/etc/udev/rules.d$ sudo cat > 70-android.rulesbash: 70-android.rules: Permission denieddaddy@gatomon-laptop:/etc/udev$ ls -ltotal 8drwxr-xr-x 2 root root 4096 2011-03-16 18:03 rules.d-rw-r--r-- 1 root root 218 2010-04-19 04:30 udev.conf

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Debian Hardware :: Udev Rules For Partitoned Usb?

Apr 23, 2011

I am using Debian Squeeze on my laptop an now I want to write udev rules. I bought an USB enclosure for my old Desktop HDD drive (Debian lenny ). But when I plug it in only the first primary partition gets mounted so I can not copy the data from my old desktop to the laptop. the output of mount shows that the following disk was mounted/dev/sdb1 on /media/disk type ext3 (rw,nosuid,nodev,uhelper=hal)

I can cd into /media/disk/etc and cat fstab shows the following:
# /etc/fstab: static file system information.


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Debian :: Custom Udev Rules Not Taking Place?

Mar 20, 2011

I'm trying to write udev rules to make it easier to recognize the network cards in my server. After a reboot it doesn't seem to take place, what am I doing wrong? I'm running Debian Squeeze stable.

$ uname -a
Linux debian 2.6.32-5-amd64 #1 SMP Wed Jan 12 03:40:32 UTC 2011 x86_64 GNU/Linux
# ls -l /etc/udev/rules.d/
total 4


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Debian :: Reset/remove Udev Persistent-net-rules?

Apr 30, 2011

I should create a sqeeze image and install it on other computers.Udev should detect network card (NIC) module and load it automatically at startup.How I understand /lib/udev/rules.d/75-persistent-net-generator.rules runs when udev starts, then writes to /etc/udev/rules.d/70-persistent-net.rules.The problem is, udev searches for this NIC on other hardware and the network cannot start.I can solve this problem easily using a startup script to delete /etc/udev/rules.d/70-persistent-net.rules file.

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Debian :: Write Udev Rules In Order To Automount Usb Pendrive?

Oct 9, 2010

im using Debian (lenny) with 2.6.26 kernel, I'm trying to write udev rules in order to automount my usb pendrive, so I added this rules in udev:

SUBSYSTEM=="block", SUBSYSTEMS=="scsi",ATTRS{vendor}=="OTi ",
ATTRS{model}=="Flash Disk ", NAME="penna128M",RUN="/usr/bin/
pmount /dev/penna128M"

I use pmount to install the device as normal user If i connect my device to the usb port I don't see nothing in /media/penna128M, BUT giving at the prompt cat /etc/mtab the last line is:

/dev/penna128M /media/penna128M vfat rw,noexec,nosuid,nodev 0 0

The line in fstab about this pendrive is:

/dev/penna128M /media/penna128Mvfatdefaults,user,owner,auto00

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Ubuntu :: Add A File To /lib/udev/rules?

Sep 28, 2010

I tried searching for an explanation on howto add a file but couldn't find anything.

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Hardware :: Listing Udev Rules Currently Used?

Apr 24, 2010

I am trying to list udev rules for devices ( similar to lshal ). lsdev is not listing what i want. trying to write udev rule for ALSP touchpad. Upon reading the guide at this site, I am not seeing the ../10_local.rules which is indicated as the correct pat to save user defined udev rules.


ls /etc/udev/rules.d

Would I be correct in assuming that I save my rule as



Device ID:I am confused also as to which device is actually being used! running


cat /proc/bus/input/devices

i get a return with these entries:


I: Bus=0017 Vendor=0001 Product=0001 Version=0100
N: Name="Macintosh mouse button emulation"
P: Phys=


I have followed howtos as listed here, here, and here. Am I not pointing my mouse.rules to the correct location? Maybe my issue is that I followed howtos from varied sources.the mouse.rules i put in /etc/udev/rules.d/mouse.rules had no effect.

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Red Hat :: Creating Raw Device Via Udev Rules

Apr 12, 2010

I have a Linux server that runs the Sybase DB. Sybase suggests using character devices to access raw devices rather than O_DIRECT to block devices, or cooked FS's. So, I went ahead and configured /etc/sysconfig/rawdevices as such:

/dev/raw/raw1 /dev/vg01/tempdb
/dev/raw/raw2 /dev/vg01/testdb
/dev/raw/raw3 /dev/vg01/fakedb ...

This works fine. I set 'chkconfig rawdevices on' and all is well. I read that this method is deprecated and went about trying to accomplish the same via Udev rules. I already use udev rules in /etc/udev/rules.d/60-raw.rules to set permissions on these devices, i.e.
ACTION=="add", KERNEL=="raw*", OWNER=="sybase", GROUP=="sybase", MODE=="0660"

That works fine. I even set symbolic links:
KERNEL=="raw1", SYMLINK+="vg01/rtempdb"
KERNEL=="raw2", SYMLINK+="vg01/rtestdb1"
KERNEL=="raw3", SYMLINK+="vg01/rfakedb2"

But I cannot seem to get the actual device creation piece to work within udev (it only works using rawdevices). I've tried:
ACTION=="add", KERNEL=="vg01/tempdb", RUN+="/bin/raw /dev/raw/raw1 %N"

No errors, but nothing happens. The device just doesn't create. I've also tried doing it by passing major and minor numbers. Is it possible to get all of this into udev rules or am I stuck with rawdevices? I'm also utterly confused as to the future of rawdevices... the raw man page said it was deprecated, and now at v5.5 it has that piece taken out. Also RHEL 5.3 dropped support for rawdevices in initscripts only to add itback in 5.4. I'm an admin, not a DBA, so I cannot say if this is a bad or good way, only that it is the way the vendor supports and recommends, so it is the way that I must go... just trying to make it work as "un-deprecated" and cleanly as possible.

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Fedora :: Udev Rules For Using USB Device Not As Root

Oct 15, 2010

Having finally made the switch from Windows (7 Professional) to Linux (Fedora 13) on my laptop, I'm now trying to get all my devices working, specifically an Olympus VN-4100PC Digital Voice Recorder. I've installed odvr and it works in root, but not as a normal user. The installation instructions say: odvr *requires* access to the user-space USB interface.

It is recommended to place "41-odvr.rules" into "/etc/udev/rules.d" or setup your own udev rules rather than running odvr as root. After changing udev rules, don't forget to run "udevcontrol reload_rules" and to replugin your DVR. Again, root privileges are required unless udev is properly setup. The file "41-odvr.rules" (designed for Ubuntu) has the following content:
SUBSYSTEM=="usb", SYSFS{idVendor}=="07b4", SYSFS{idProduct}=="020d", ACTION=="add", GROUP="audio", MODE="0664"

I tried just doing what it said and copying it to "/etc/udev/rules.d" but it didn't seem to work. Looking at other files, I then changed it to:
SUBSYSTEM=="usb", ATTR{idVendor}=="07b4", ATTR{idProduct}=="020d", ACTION=="add", GROUP="audio", MODE="0664"

And now if I do "ls -l /dev/bus/usb/002", I get:
crw-rw-r--. 1 root audio 189, 134 Oct 15 01:21 007

Which seems to suggest that it is running the "41-odvr.rules" file, since lsusb gives:
Bus 002 Device 007: ID 07b4:020d Olympus Optical Co., Ltd Digital Voice Recorder VN-240PC

But odvr still doesn't work as a normal user, giving:
Failed to open Olympus device: couldn't claim interface

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Ubuntu :: Udev Rules For Multiple USB GSM Modem?

Oct 20, 2010

I have a question related on udev rules. I have a SMS Gateway project using multiple usb gsm modem. I use huawei modem for this project. My goal are every time I plug in huawei devices on my ubuntu box it automatically mounts on specific ttyUSB port

huawei 1 -> ttyUSB1
huawei 2 -> ttyUSB2

My problem are to meet this goal i must find unique data between different huawei devices (e.g. productID, vendorID, serial). In huawei product this information are the same with all devices.There is only one unique on every huawei devices. That is IMEI value. How can use this value or find this value for udev rules.

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Software :: New UDev Rules Set Breaking Functions

Jul 9, 2010

On my Sid box, I did an update and it appears it also updates udev's rule set that doesn't like the notion of dm-crypt or LVM. For example:

trilarian@Debian-Desktop:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/dm-1 9.9G 2.4G 7.1G 26% /
tmpfs 438M 0 438M 0% /lib/init/rw
udev 10M 192K 9.9M 2% /dev
tmpfs 438M 0 438M 0% /dev/shm
/dev/md0 94M 83M 12M 88% /boot
/dev/dm-2 1008M 630M 328M 66% /var
/dev/dm-3 600G 291G 310G 49% /home
When I used to run df I would get lvm/dm name instead of number, like:
/dev/mapper/raid-root 9.9G 2.4G 7.1G 26% /
What I need to change in udev to restore the old function?

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Networking :: Ubuntu 10.04 Ignores Eth Udev Rules

Jan 6, 2011

For some reason, Ubuntu keeps assigning my network interface wrong MAC address. This happens only after fresh boot (I have dual boot with WinXP, if I start Windows first and then restart to Ubuntu without switching computer off, the MAC is correct). Contents of /etc/udev/rules.d/70-persistent-net.rules:


# PCI device 0x10ec:0x8136 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:19:ef:1c:3d", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x168c:0x001c (ath5k_pci)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:17:c4:78:f4:f8", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"


EDIT: I made a workaround by adding


auto eth0
iface eth0 inet dhcp
hwaddress ether 00:f3:f5:ef:fe:56

to /etc/network/interfaces and it works. However, I'd still like to know why Ubuntu ignores my udev rules, regardless whether the workaround happens to work or not...

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General :: Udev Rules Aimed For USB Drives Only?

Mar 14, 2011

I have written a udev rule as follows:Code:RUN+=/.../.../example.shWhenever i plug in a USB drive, this rule is executed, however it is also done when i plug in a dongle for WiFi. How do i make this udev rule specific for USB drives only. In other words this script should be run for USB devices only.

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Red Hat :: 50-udev.rules Causes Start_udev To Hang On Boot?

Aug 14, 2010

I've been having problems with start_udev on my machine post kernel 2.6.18-162 on my CentOS machine. A previous install would work on the old kernelut not the newer ones. I recently did a completely fresh install of CentOS 5.5o see if maybe there was a orruption in my install when it upgraded,t I still have the problem of udev hanging on startup.Using the rescue option on the disk, I've managed to track the problem down to the 50-udev.rules file. Through trial and error, I moved all the .rules files out of the rules.d directory, and added them back one at a time to see which one(s) caused the system to hang, and which ones it carried on booting as normal with. The only one that causes it to hang is the 50-udev.rules.

From what I can tell, this rules file is responsible for letting udev check various pieces of hardware. I think that it is failing whent runs modprobe on a pci device address.Only problem is I don't understand the rules file syntax, so I don't know if I can simply comment out or change a line in this file to skip the device that its looking for.Can anybody help me track down the specific device/line that is doing this?(I've kept the file out of the folder for now and my system appears to continue operating, but I get the occasional problem that for all I know could be due to udev not having a complete start up).

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Fedora :: Udev Rules: Hide Arrays From Nautilus?

Aug 19, 2010

In the not so distant past, I was able to hide arrays/encrypted arrays from nautilus with udev rules as follows:


## HIDE Encrypted "dm" partitions from nautilus
## NOTE: not needed by Fedora


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General :: Udev Rules To Automatically Apply 666 Permission?

Apr 3, 2010

my linux box the device node for my printer is by default setup as the following: crw-rw---- 1 root lp 189, 1 Apr 3 07:45 /dev/bus/usb/001/002 This causes cups to not print at all. The Hp backend (HPLIP) fails because of these permissions. How do I change it so that it's crw-rw--rw 1 root lp 189, 1 Apr 3 07:45 /dev/bus/usb/001/002. Ie I would like 666 file permission on that node.

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Ubuntu :: Udev Rules Suddenly Stopped Working In 9.10?

Aug 10, 2010

Recently I had made some udev rules to communicate with a few devices using USB ports. For some odd reason, they suddenly stopped working. Here are my rules:


ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK="HCS12"
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", SYMLINK="Driver12"
ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0109", SYMLINK="Driver34"

According to the documentation, all that is needed to write proper rules is one match operator (relevant info) and one assignment operator (name of port). I am running kernel 2.6.31-22, so udev rules are valid for use (they require at least 2.6.15). My only guess is to include something that identifies the serial port.

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Debian Configuration :: Automount External USB HD Using Udev

Jan 23, 2011

I have a problem copying my udev rules from other distro to another pc running debian. My box is running debian without any DE and I want my USB disks to be automounted based on the label; I believe udev is the nicest way to do this task.

Anyways : my rules are (copied from archlinux wiki btw)
cat /etc/udev/rules.d/92-my-media-automount.rules
# vim:enc=utf-8:nu:ai:si:et:ts=4:sw=4:ft=udevrules:
# /etc/udev/rules.d/92-my-media-automount.rules
# Only work on sd*
KERNEL!="sd[a-z]*", GOTO="my_media_automount_end"
ACTION=="add", PROGRAM!="/sbin/blkid %N", GOTO="my_media_automount_end" .....

I notice the directory is made successfully up inserting the usb HD, but the mount doesn't succeed. If I manually execute above command, the mount goes ok.

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Debian Configuration :: Build A Package - Debian / Rules Error?

Apr 2, 2011

I recently tossed Ubuntu for Debian Unstable for my personal machines and I'm having trouble building Emerald into a package. I've already configured and installed the package (using the usual ./configure, make, make install) but I wanted to make a deb for future use (for myself and for others). However every time I try to run dpkg-build I get the following error message.

dh_install -pemerald --sourcedir=debian/tmp
dh_install: emerald missing files (usr/bin/*), aborting
make: *** [binary-install/emerald] Error 2
dpkg-buildpackage: error: debian/rules binary gave error exit status 2


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Ubuntu Servers :: Udev Rules To Check If File Exists?

Jun 9, 2011

Is it possible to set up a udev rule that will check if a file exists on a USB drive?

I've got a few ubuntu servers in environments with some very not-techy peoples. Im hoping to get to the point where I can give them a few USB sticks with scripts on them, and if they plus one of these sticks in it will be mounted in, say, /media/special (rather than /media/usb0..7) and then the script would be run. But if a usb drive without is inserted, it should be mounted to /media/usb0..7 as normal.

I've been googeling for udev rules, and it seems simple enough to specify a mount point based on brand/model/serialnumber/etc... but i havent been able to find anything about checking for the existance of a file.

Tho the more i think about it, the more im starting to think its not going to be that straight forward. Can udev check for a file on a drive before that drive is mounted? Is it going to be a case of mounting every drive to /media/usb0..7 then having a script run that will check for the file, and if its there change the mount point before running

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Software :: SLES11 / Udev Rules / Tape Media Changer?

Oct 1, 2009

at our SLES11 server there is an iscsi tape roboter from OVERLAND attached. From this great forum we learnt to use udev rules in order to fix the device name for the media changer /dev/sgN where N is altering after each reboot. Here is the udevinfo output of our tape changer:

#udevinfo -a -p $(udevinfo -q path -n /dev/sg5)
looking at device


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Hardware :: UDev Rules And Detecting Powered Up SATA HDD In 5.25 Enclosure?

Sep 7, 2010

I have 3X 5.25 SATA removable bays with hard drives in it. I am working on a new script to manually backup some very important data to those drives. Basically, to eliminate risks of burning the HDD's, or accidentally (either by me or my scripts) destroy data, I normally keep those drives offline, i.e. unpowered. The enclosures are Vantec EZ swap and require a key to turn them on/off. Once it is turned on, Slackware see them without a glitch. My script will basically display a message to warn that the backup is about to happen, then once the user click the OK button, mount the partition to a local folder and then backup the data. The partition will then be unmounted and a new message will be displayed to ask the user to "unplug" the HDD. Cron will take care of the schedule.

Basically, in pseudo code:

1-Verify if sdd is connected (powered)... If so, procee to #2, else display message box "The HDD is not connected"
2-Mount the partition sdd5 to the local folder
4-Unmount the partition from the local folder
5-Display a message box "The backup was completed with success. You can now disconnect the HDD"

how can I automate the detection of the hdd? I would like the script to poll or probe the HDD to see if it was properly turned on, and if so, proceed with the rest... I tried all kind of stuff but no luck... For example, fdisk -l will list the drive & its partitions if it is connected (powered) and wont if the drive is not connected. I cant use the output of fdisk to efficiently accomplish what I am trying to do...

I want the script to display the messages boxes (Please plug the HDD & You can now unplug the HDD) to a different display (i.e. my laptop). The reason is because the script will run on my server that has no monitor...

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General :: How Udev Rules Work To Create Device Files

Jun 2, 2010

how udev rules work to create device files. Following is what I did for that: Up on plugging in my phone (sony w800i), I am getting a device file 'devcdc-wdm0' created. I just tried to figure out the rule which is responsible for the creation of this particular file.

I searched in 'etcudev ules.d' and 'libudev ules.d' for the string 'cdc-wdm' to find that rule. But I am not getting any hits in that search. Could any one help me out in this one.

BTW: I am using Ubuntu 9

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Programming :: Udev Rules - Pass ATTRS{*} Values To The RUN Command?

Sep 24, 2010

I'm modifying a working udev rule which runs a script that mounts a USB HDD and synchronises files to it.The USB HDDs have been troublesome, losing many files and even losing file systems a couple of timesTo investigate,I want to log the USB HDD product name and serial number so would like to pass ATTRS{product} and ATTRS{serial} values to the script.This may not be possible; I cannot see anything about how to do it in either the udev man page nor Daniel Drake's "Writing udev rules" Version 0.74 but it seems such an obvious thing to want to do, I'm wondering if I've overlooked something.

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Slackware :: Write Udev Rules For USB Hard Disk Drives?

Aug 16, 2010

I just bought a USB hard disk and when I plug it in it gets mounted as owner root and group root. I tried writing a udev rule for it based on the following guide:Nothing seems to work, it always mounts as root. Slackware 13.1, KDE, Dell Optiplex GX280, Western Digital Passport USB 320 gig drive.I am a member of the plugdev group, so it seems to me a rule should not even be necessary.

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