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On Feb 19, 2014, at 7:52 AM, Thiago Tiedtke dos Reis wrote: > If I try to access the port /dev/ttyUSB0 using minicon (minicom -D > /dev/ttyUSB0) or cat ( cat /dev/ttyUSB0 ), the access to device is denied. even as root? > Then, I try these instructions [0], but nothing changes when I try to open > the serial port: That blog is slightly misleading: if you have a USB UPS which pretends to be a serial port (/dev/ttyUSB0), then you do need to run the following commands: $ sudo udevadm control --reload-rules $ sudo udevadm trigger or unplug and re-plug the UPS. Afterwards, 'ls -l /dev/ttyUSB0' should show the group as 'nut'. Also, I noticed that the USB VID:PID matches that of the riello_usb driver (this may be a coincidence due to both UPS vendors using the Cypress USB-to-serial chip). You can give that driver a try as well. -- Charles Lepple clepple@gmail _______________________________________________ Nut-upsdev mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsdev
