How can I run a script on resume from hibernation?

fsmithred · Yesterday 19:41:17

If I want to run a script when resuming from hibernation, google tells me to do something with systemd. That's not an option. I poked around in /etc/acpi/ and /etc/elogind/ and I can't figure it out. I did read a few man pages, too. It's probably not difficult, but requires knowing where/what to tweak.

greenjeans · Yesterday 20:29:49

Possibly add something in /etc/initramfs-tools/conf.d , I use it to get rid of boot warnings (RESUME=none), but possibly add a line about running the script after resuming normally? So maybe RESUME=<swap partition or whatever you use> && somescript.sh

Sounds hacky, but ya never know. Then update-initramfs and see what happens, lol.

Last edited by greenjeans (Yesterday 20:32:58)

ralph.ronnquist · Yesterday 21:23:18

@greenjeans that's just stupid.

@fsmithred, tt of course depends on which hibernate-resume pathway you actually are using. Some go via pm-utils and for that you may check out man pm-hibernate. Or maybe you rely on logind in which case you'd check out man loginctl instead.

rbit · Yesterday 21:24:45

I've got this script (for an example) from when I used to hibernate/suspend. It might require ~~pmtools~~ pm-utils (as Ralph noted above).

#!/bin/bash
# Script name: /etc/pm/sleep.d/50_network
# Purpose: Restore network settings upon thaw / resume

case $1 in
  suspend|suspend_hybrid|hibernate)
    :
    ;;
  resume|thaw)
    # wait 10s for network to come back
    sleep 10
    logger -s "/etc/pm/sleep.d/50_network: Restoring network settings..."
    # restore network settings
    /usr/local/sbin/netconfig.sh
    logger -s "/etc/pm/sleep.d/50_network: Done."
    ;;
esac

fsmithred · Yesterday 22:16:50

Thanks. I got it to work with pm-hibernate. I put a simple script in /etc/sleep.d/testmessage and it ran. Just this...

#!/usr/bin/env bash

echo "$(date)" > /home/user/TESTMESSAGE

exit 0

greenjeans · Today 01:16:05

@greenjeans that's just stupid.

I'm sure you're right, but it's fun to brainstorm, and in the end fsmithred go it to work with a similar simple hack, Not convinced my idea wouldn't work though, I may have to try it, though I don't typically use hibernate for anything.

Mercury · Today 01:35:21

This is timely as I had a similar problem on my checklist. After consulting Gemini and getting past its initial wrong answer, I got the following, which works with elogind, which is what I got installed by default in Devuan:

Create /etc/elogind/system-sleep/your_script.sh

Make it executable.

Fill the contents:

#!/bin/sh
if [ "$1" = "post" ]; then
    # Your wakeup commands here
    echo "Woke up at $(date)" >> /tmp/wakeup.log
fi

This works. The $1 variable will be either "pre" or "post" for suspend or wakeup respectively.

ralph.ronnquist wrote:

iOr maybe you rely on logind in which case you'd check out man loginctl instead

...which gives the bad info (as Gemini did initially) that scripts in [/usr]/lib[64]/elogind/system-sleep will be executed. In fact, empirical testing shows they are not. Only those in /etc/elogind/system-sleep/ are, which shows once again that bad documentation is worse than no documentation. I suppose I should be expected to file a bug to fix the docs?

Last edited by Mercury (Today 01:48:38)

ralph.ronnquist · Today 01:55:54

Yes, filing a bug for elogind would be helpul. You file to Debian (bugs.debian.org) against the package although, I believe, upstream source is in Devuan's git store.

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#1 Yesterday 19:41:17

How can I run a script on resume from hibernation?

#2 Yesterday 20:29:49

Re: How can I run a script on resume from hibernation?

#3 Yesterday 21:23:18

Re: How can I run a script on resume from hibernation?

#4 Yesterday 21:24:45

Re: How can I run a script on resume from hibernation?

#5 Yesterday 22:16:50

Re: How can I run a script on resume from hibernation?

#6 Today 01:16:05

Re: How can I run a script on resume from hibernation?

#7 Today 01:35:21

Re: How can I run a script on resume from hibernation?

#8 Today 01:55:54

Re: How can I run a script on resume from hibernation?

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