Thanks a lot Charels. I just comment root user in usb.conf and add sudo adduser nut dialout. Now everything works well.
Thanks again you save me a lot of time :) I wish all of you merry chrismas, Janez 2014-12-23 23:58 GMT+01:00 Charles Lepple <clep...@gmail.com>: > I setup apcsmart driver on port /dev/ttyUSB0 in ups.conf and check that > runing user=root. > > user=root is only for testing- this may cause other permissions problems > later. > > > It looks like the simplest way to handle this on Debian is to add the > system 'nut' user to the 'dialout' group: > > $ sudo adduser nut dialout > > I have been meaning to collect some information on using serial UPSes with > NUT via USB-to-serial converters, but you can adapt the udev rules to match > your converter, and even create a symlink so that it will not change names. > (If a process has /dev/ttyUSB0 open, and the USB cable is unplugged, udev > will create /dev/ttyUSB1 when it is next plugged in, which will not match > the configuration file) > > > Just confirmed that the default udev rules for Raspbian wheezy will create > some symlinks in /dev/serial/by-path and /dev/serial/by-id which should be > useful. > > I have an inexpensive USB-to-serial cable which does not have a unique > serial number, so I can only use one of that model at a time, and still > uniquely identify it. But this is what it produces: > > $ ls -l /dev/serial/by-id/ > total 0 > lrwxrwxrwx 1 root root 13 Dec 31 1969 > usb-Prolific_Technology_Inc._USB-Serial_Controller-if00-port0 -> > ../../ttyUSB0 > > Although it is unwieldy, the pathnames under /dev/serial/by-id should > always point to the correct /dev/ttyUSB? node. > > -- > Charles Lepple > clepple@gmail > > > >
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