~ $ sudo upsdrvctl start
Network UPS Tools - UPS driver controller 2.4.3
Network UPS Tools - Megatec protocol driver 1.6 (2.4.3)
Unable to open /dev/ttyS0: Permission denied
Current user id: nut (117)
Serial port owner: root (0)
Serial port group: dialout (20)
Mode of port: 0660
Things to try:
- Use another port (with the right permissions)
- Fix the port owner/group or permissions on this port
- Run this driver as another user (upsdrvctl -u or 'user=...' in ups.conf).
See upsdrvctl(
and ups.conf(5).
Fatal error: unusable configuration
Driver failed to start (exit status=1)