Bug 187105 - usb ups persmissions not correct (included a possible fix in udev).
usb ups persmissions not correct (included a possible fix in udev).
Status: CLOSED DUPLICATE of bug 189674
Product: Fedora
Classification: Fedora
Component: nut (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Ngo Than
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2006-03-28 10:42 EST by Kapoios Kanenas
Modified: 2007-11-30 17:11 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-04-24 12:50:29 EDT
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
udev rule file to change permissions for USB UPS devices (146 bytes, application/octet-stream)
2006-03-28 10:42 EST, Kapoios Kanenas
no flags Details
mge ups rules (170 bytes, application/octet-stream)
2006-04-09 10:14 EDT, Kapoios Kanenas
no flags Details
udevinfo -a -p /class/usb_device/usbdev1.3 (2.39 KB, application/octet-stream)
2006-04-09 11:11 EDT, Kapoios Kanenas
no flags Details
lshal output (only the ups) (3.73 KB, application/octet-stream)
2006-04-09 13:16 EDT, Kapoios Kanenas
no flags Details

  None (edit)
Description Kapoios Kanenas 2006-03-28 10:42:56 EST
Created attachment 126911 [details]
udev rule file to change permissions for USB UPS devices
Comment 1 Kapoios Kanenas 2006-03-28 10:42:56 EST
Description of problem:

nut user is not able to write USB UPS device.

Bus 001 Device 005: ID 0463:ffff MGE UPS Systems UPS

LANG=C ls -l /dev/bus/usb/001/005
crw-r--r-- 1 root nut 189, 4 Mar 28 17:46 /dev/bus/usb/001/005

As result nut fails: 
anarchos64[tasos]:/etc/udev/rules.d$ sudo service ups start
Starting upsdrvctl: Network UPS Tools - UPS driver controller 2.0.2
Network UPS Tools: New USB/HID UPS driver 0.23 (2.0.2)

No USB/HID UPS found
Driver failed to start (exit status=1)

nut works ok if you change the permissions to 664 and the group to nut for the

Find attached a udev rule file to fix the permissions.

Version-Release number of selected component (if applicable):
rpmquery nut
Comment 2 Kay Sievers 2006-04-09 09:50:16 EDT
Matching on a single 0xffff value to identify a UPS sounds pretty wrong. USB
UPS'es are usually HID devices and can identified as such, is that different for
you UPS? You may run:
   udevinfo -a -p /class/usb_device/usbdevX.Y
for the device to look for a better match.
Comment 3 Kapoios Kanenas 2006-04-09 10:14:04 EDT
Created attachment 127522 [details]
mge ups rules
Comment 4 Kapoios Kanenas 2006-04-09 10:15:39 EDT
My mistake I forgot to add the vendor id.

Find the rules with vendor ID attached.
Comment 5 Kay Sievers 2006-04-09 10:34:47 EDT
I'm pretty sure we better identify the UPS's by its generic class and not by
vendor/product. Can you please attach the udevinfo -a output.
Comment 6 Kapoios Kanenas 2006-04-09 11:11:59 EDT
Created attachment 127523 [details]
udevinfo -a -p /class/usb_device/usbdev1.3

It's the 1.3 

Besides the product the manufacturer and the vendor/product ids, I don't see
anything else , class & subclass are zero.
Is there another variable that identifies this as a UPS device ?
Comment 7 Kay Sievers 2006-04-09 12:14:11 EDT
Oh, that thing again. :) It's a kind of mess with the usb devices, interfaces
and the userspace access nodes. They are at different levels in sysfs. We will
hopefully be able to solve that proper with a future version of the usb
userspace access, which is currently under development, and that exports an
individual device node for every interface.

The information about your UPS is likely at the interface level, which
unfortunately is not reachable from within the event for the usb device node:
  grep . /sys/devices/pci0000:00/0000:00:02.0/usb1/1-3/*-*/*

Can you please attach the output (or just the section for the UPS) of:
to see if HAL can recognize your device correctly.
Comment 8 Kapoios Kanenas 2006-04-09 13:16:53 EDT
Created attachment 127525 [details]
lshal output (only the ups)

here it is, it has only the sections with mge ups vendor id.
Comment 9 Kay Sievers 2006-04-10 05:10:49 EDT
Thanks for all the infos. Seems there is currently no easy way to solve that.
Listing vendor/product should be fine then. Thanks again.
Comment 10 Ngo Than 2006-04-24 12:50:29 EDT

*** This bug has been marked as a duplicate of 189674 ***

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