Ubuntu
linux package

  1. Bug #1781016
  2. Comment #20

Comment 20 for bug 1781016

Revision history for this message
daftykins (dbonham-gmail) wrote :

Kyle - excellent find, I have confirmed that this was the cause of my issue, too. Thank you!

I had taken a quick glance at /etc/apcupsd/apcupsd.conf when I was failing to see communication working with my UPS, as I saw the expected lines to configure apcupsd for USB mode I had assumed there was a deeper problem and never got around to looking at it again. To confirm, the config contains these lines by default:

UPSTYPE usb
DEVICE /dev/ttyS0

I commented out the 'DEVICE' line like so:

UPSTYPE usb
#DEVICE /dev/ttyS0

Then I restarted the service with:

# sudo systemctl restart apcupsd

I no longer see the IRQ messages in dmesg output. Great! Does this apply to everyone else that has encountered this, I wonder?