Ubuntu – Run a script after lid is opened

suspendUbuntu

I would like to run a script after my laptop lid is opened. is there anything like rc.local that is run after the laptop wakes up after suspending?

I use Ubuntu 12

(I need it because some of the systems settings are reset after the lid is closed)

Best Answer

You could try the pm-utils package.
I don't know if this is installed by default on Ubuntu.
You can then write a hook script (at e.g. /etc/pm/sleep.d/00_my_resume_hook) such as

#!/bin/sh
case "${1}" in
    hibernate)
        # nothing
    ;;
    resume|thaw)
        #your script here
    ;;
esac

I may have glossed over some essential details here.

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 suspend-then-hibernate.target


[Service]
ExecStart=/path/to/my_user_script
#User=my_user_name
#Environment=DISPLAY=:0

[Install]
WantedBy=suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.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 run 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 ~/.config/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.)

Best Answer

Related Solutions

Ubuntu – Not wake up after suspension

How to run a user script after systemd wakeup

Using a system service:

Using a user service will not work:

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