Hi all,
(Keeping this in a separate email from my first one so as to not make it
horribly complex)
I've connected my Belkin F6C120auUNV UPS to my Debian 7.7.0 host via
USB, and found that the usbhid-ups driver will not start unless I use
the option '-u root', even when starting this driver as root:
root at monitor:/lib/nut# cat /etc/nut/ups.conf
[greything]
driver = usbhid-ups
port = auto
root at monitor:/lib/nut# ./usbhid-ups -a greything
Network UPS Tools - Generic HID driver 0.37 (2.6.4)
USB communication driver 0.32
Can't claim USB device [050d:0912]: could not detach kernel driver from
interface 0: Operation not permitted
root at monitor:/lib/nut# ./usbhid-ups -a greything -u root
Network UPS Tools - Generic HID driver 0.37 (2.6.4)
USB communication driver 0.32
Using subdriver: Belkin HID 0.15
root at monitor:/lib/nut# ps aux | grep usbhid
root 4857 0.1 0.0 16888 712 ? Ss 21:54 0:00
./usbhid-ups -a greything -u root
root 4859 0.0 0.0 7836 880 pts/0 S+ 21:54 0:00 grep usbhid
Is this expected behavior? Seems like it should not be required, a
quick google found this:
https://bugzilla.redhat.com/show_bug.cgi?id=488368 (not the same
situation, but the short-term fix detailed works, i.e. use '-u root')
Thanks,
Greg
Hi, Self-reply ftw, is it something to do with the permissions of the device that is created when the UPS is plugged in? I remember that Debian does have a pretty strict permissions structure, so do I have to fiddle the permissions of something in /dev? I'll try updating nut-server to version 2.6.4-2.3+deb7u1 in wheezy backports and report back - initial attempt to install from wheezy backports is not working! (New package won't install when running 'aptitude -t wheezy-backports install nut-server', even though aptitude got the updated package list correctly...) Thanks, Greg On 14/11/2014 9:57 pm, Greg Vickers wrote:> Hi all, > > (Keeping this in a separate email from my first one so as to not make > it horribly complex) > > I've connected my Belkin F6C120auUNV UPS to my Debian 7.7.0 host via > USB, and found that the usbhid-ups driver will not start unless I use > the option '-u root', even when starting this driver as root: > root at monitor:/lib/nut# cat /etc/nut/ups.conf > [greything] > driver = usbhid-ups > port = auto > root at monitor:/lib/nut# ./usbhid-ups -a greything > Network UPS Tools - Generic HID driver 0.37 (2.6.4) > USB communication driver 0.32 > Can't claim USB device [050d:0912]: could not detach kernel driver > from interface 0: Operation not permitted > root at monitor:/lib/nut# ./usbhid-ups -a greything -u root > Network UPS Tools - Generic HID driver 0.37 (2.6.4) > USB communication driver 0.32 > Using subdriver: Belkin HID 0.15 > root at monitor:/lib/nut# ps aux | grep usbhid > root 4857 0.1 0.0 16888 712 ? Ss 21:54 0:00 > ./usbhid-ups -a greything -u root > root 4859 0.0 0.0 7836 880 pts/0 S+ 21:54 0:00 grep > usbhid > > Is this expected behavior? Seems like it should not be required, a > quick google found this: > https://bugzilla.redhat.com/show_bug.cgi?id=488368 (not the same > situation, but the short-term fix detailed works, i.e. use '-u root') > > Thanks, > Greg > > > _______________________________________________ > Nut-upsuser mailing list > Nut-upsuser at lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
Well, it won't install because the version in wheezy is the same as the version in wheezy-backports. Right: # ls -la /dev/bus/usb/002 total 0 drwxr-xr-x 2 root root 80 Nov 15 13:31 . drwxr-xr-x 7 root root 140 Nov 15 13:31 .. crw-rw-r-T 1 root root 189, 128 Nov 15 13:31 001 crw-rw-r-T 1 root root 189, 129 Nov 15 13:37 002 No surprise there! Guess it was a permission thing, I did 'chown root:nut 002' and I could start the driver without '-u root'. I rebooted the netbook and voila! The permissions are now created correctly. Onwards. On 15/11/2014 9:29 am, Greg Vickers wrote:> Hi, > > Self-reply ftw, is it something to do with the permissions of the > device that is created when the UPS is plugged in? I remember that > Debian does have a pretty strict permissions structure, so do I have > to fiddle the permissions of something in /dev? > > I'll try updating nut-server to version 2.6.4-2.3+deb7u1 in wheezy > backports and report back - initial attempt to install from wheezy > backports is not working! (New package won't install when running > 'aptitude -t wheezy-backports install nut-server', even though > aptitude got the updated package list correctly...) > > Thanks, > Greg > > On 14/11/2014 9:57 pm, Greg Vickers wrote: >> Hi all, >> >> (Keeping this in a separate email from my first one so as to not make >> it horribly complex) >> >> I've connected my Belkin F6C120auUNV UPS to my Debian 7.7.0 host via >> USB, and found that the usbhid-ups driver will not start unless I use >> the option '-u root', even when starting this driver as root: >> root at monitor:/lib/nut# cat /etc/nut/ups.conf >> [greything] >> driver = usbhid-ups >> port = auto >> root at monitor:/lib/nut# ./usbhid-ups -a greything >> Network UPS Tools - Generic HID driver 0.37 (2.6.4) >> USB communication driver 0.32 >> Can't claim USB device [050d:0912]: could not detach kernel driver >> from interface 0: Operation not permitted >> root at monitor:/lib/nut# ./usbhid-ups -a greything -u root >> Network UPS Tools - Generic HID driver 0.37 (2.6.4) >> USB communication driver 0.32 >> Using subdriver: Belkin HID 0.15 >> root at monitor:/lib/nut# ps aux | grep usbhid >> root 4857 0.1 0.0 16888 712 ? Ss 21:54 0:00 >> ./usbhid-ups -a greything -u root >> root 4859 0.0 0.0 7836 880 pts/0 S+ 21:54 0:00 grep >> usbhid >> >> Is this expected behavior? Seems like it should not be required, a >> quick google found this: >> https://bugzilla.redhat.com/show_bug.cgi?id=488368 (not the same >> situation, but the short-term fix detailed works, i.e. use '-u root') >> >> Thanks, >> Greg >> >> >> _______________________________________________ >> Nut-upsuser mailing list >> Nut-upsuser at lists.alioth.debian.org >> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser >