I am trying to control my CyberPower 625VA UPS. From what I hear, this is best done via nut, rather than via the gnome-power-manager. See e.g. Monitoring a UPS with nut on Debian or Ubuntu Linux | Random Bits
But when I configure nut as described in that article, it fails:
$ sudo upsdrvctl start Network UPS Tools - UPS driver controller 2.4.3 Network UPS Tools - Generic HID driver 0.34 (2.4.3) USB communication driver 0.31 Can't claim USB device [0764:0501]: could not detach kernel driver from interface 0: Operation not permitted Driver failed to start (exit status=1)
I then noted that it was already being monitored by gnome-power-manager. The article (presumably now out-of-date) had said I would need to install
nut-hal-drivers in order to monitor it with the Gnome Power Manager, so I hadn't even looked up there on the indicator panel.... But it wasn't being monitored very well (both the History and Statistics tabs were useless), and what I really want is programmatic control.
I do note that I can get some raw battery data via
lshal -u /org/freedesktop/Hal/devices/usb_device_764_501_noserial_if0_hiddev
But I'd prefer nut.
So how to I tell the power manager to NOT monitor the UPS, so nut will (presumably)?
FWIW, this situation is the same on both maverick and precise, on laptops in both cases.