On 1/12/22 06:27, Eyal Lebedinsky wrote:

On 11/01/2022 21.22, Manuel Wolfshant wrote:
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

Had a read and it is more than I am ready to risk my lack of knowledge of systemd, so I just added
    systemctl restart nut-driver
to my /etc/rc.d/rc.local and it seems to do the trick.

That's one way to do it.Or you could

1. Save the below content as /usr/lib/systemd/system/nut-driver.timer
<----cut from here --->

[Unit]
Description=Delay startup of nut-driver by as many seconds as specified in the [Timer] section
Documentation=https://www.freedesktop.org/software/systemd/man/systemd.timer.html

[Timer]
OnBootSec=20

<--- to here --->

2. Run the following commands:

#systemctl disable nut-driver

#systemctl enable nut-driver.timer

#reboot  ## for testing purposes; you can also emulate by adding

                    #for testing purposes
                    OnActiveSec=20

to the [Timer section]


That should do it.

wolfy

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