I bought a KSTAR Powercom 600VA Line Interactive UPS with USB. It works fine, but I want to disable the beep when the power is down.
When I plug the USB cable into my laptop (running Ubuntu 18.04), it seems to identify as an MEC0003 device in syslog:
Jun 16 11:48:50 smurfenaar kernel: [103981.169542] usb 1-3: Product: MEC0003
What software and configuration do I need to turn off the beep?
I got it working with Network UPS Tools (NUT)
$ sudo apt install nut nut-cgi
Sudo edited /etc/nut/ups.conf to contain:
# Set maxretry to 3 by default, this should mitigate race with slow devices:
maxretry = 3
[kstar]
driver = nutdrv_qx
port = auto
desc = "Description of this UPS"
and sudo edit /etc/nut/upsd.users
[admin]
password = youradminpassword
actions = SET
instcmds = ALL
Finally, sudo edit /etc/nut/nut.conf and ensure MODE is set to standalone:
MODE=standalone
Start up the ups driver and NUT deamon:
$ sudo upsdrvctl start
Network UPS Tools - UPS driver controller 2.7.4
Network UPS Tools - Generic Q* USB/Serial driver 0.28 (2.7.4)
USB communication driver 0.33
Using protocol: Q1 0.07
Can't autodetect number of battery packs [-1/13.70]
Battery runtime will not be calculated (runtimecal not set)
$ sudo systemctl start nut-server
To see current beep status, use the upsc command:
$ upsc kstar
Init SSL without certificate database
battery.voltage: 13.70
device.type: ups
driver.name: nutdrv_qx
...
ups.beeper.status: enabled
...
Use the upscmd command with the username and password you configured in /etc/nut/upsd.users:
$ upscmd -u admin -p admin kstar beeper.toggle
and we see that beep is now disabled
$ upscmd -u admin -p admin kstar beeper.toggle
OK
$ upsc kstar | grep beep
Init SSL without certificate database
ups.beeper.status: disabled
It might take a second or 5 for upsc to reflect the status change. Voila, no more beeping when the AC is down.
