Cfrtjryk

When my debian jessie desktop box wakes up from sleep (via the new shiny systemd) my mouse settings are returned to their defaults, having reset my customisation

xinput set-prop 12 'Device Accel Constant Deceleration' 2.5

which runs when I log in.

how can I run an arbitrary user script on wakeup? (assume that the user is the owner of the X session)

As far as I can recall, the following is the only customisation I've made of the systemd setup (yes, I know it's completely wrong because it doesn't work for arbitrary users, but I've not worked out how to do that yet... this is somewhat related)

additionally, how can I run an arbitrary user script before wakeup, as the user who is currently using the X screen?

cat /etc/systemd/system/i3lock.service

#systemctl enable i3lock.service



[Unit]

Description=i3lock

Before=sleep.target



[Service]

User=fommil

Type=forking

Environment=DISPLAY=:0

ExecStart=/usr/bin/i3lock -c 000000



[Install]

WantedBy=sleep.target

I created a file in /lib/systemd/system-sleep.

#!/bin/sh

case $1 in

  post)

    /bin/runme

  ;;

esac

The post is called on wakeup.

EDIT:

https://www.freedesktop.org/software/systemd/man/systemd-suspend.service.html

This answer is based on askubuntu.com/a/661747/394818 (as also referred to in the comment by @sun-bear), askubuntu.com/q/616272/394818 and superuser.com/a/1269158/585953.

Using a system service:

Create the file /etc/systemd/system/my_user_script.service:

[Unit]

Description=Run my_user_script

After=suspend.target hibernate.target hybrid-sleep.target



[Service]

ExecStart=/path/to/my_user_script

#User=my_user_name

#Environment=DISPLAY=:0



[Install]

WantedBy=suspend.target hibernate.target hybrid-sleep.target

Remove suspend/hibernate/hybrid in case the service should only be executed after waking up from a specific type of sleep. In case the service needs to be ran by a specific user, uncomment the User= and Environment= lines and replace the relevant user name.

Install the service file with:

sudo systemctl enable my_user_script

Using a user service will not work:

In order to avoid setting a hard coded user name with User=, one could create the exact same service file at .local/share/systemd/user/my_user_script.service and activate with systemctl --user enable my_user_script. However, that will not work. @grawity explains in more detail at unix.stackexchange.com/a/174837/163108 why that is:

sleep.target is specific to system services. The reason is, sleep.target is not a magic target that automatically gets activated when going to sleep. It's just a regular target that puts the system to sleep – so the 'user' instances of course won't have an equivalent. (And unfortunately the 'user' instances currently have no way to depend on systemwide services.)