[Nut-upsuser] ups services not starting at boot time

[Manuel Wolfshant]

On 1/11/22 11:46, Eyal Lebedinsky wrote:
> Jan 11 19:29:19 e7.eyal.emu.id.au upsdrvctl[1612]: Network UPS Tools - 
> Generic HID driver 0.41 (2.7.4)
> Jan 11 19:29:19 e7.eyal.emu.id.au upsdrvctl[1612]: USB communication 
> driver 0.33
> Jan 11 19:29:19 e7.eyal.emu.id.au upsdrvctl[1612]: No matching HID UPS 
> found
> Jan 11 19:29:19 e7.eyal.emu.id.au upsdrvctl[1610]: Driver failed to 
> start (exit status=1) 

Here is your culprit, the UPS is not seen in the moment the driver tries 
to talk with it. Use a monotonic timer to delay the start of the service 
by, say, 20 secs or so.

https://www.freedesktop.org/software/systemd/man/systemd.timer.html