On Wed, Aug 7, 2013 at 10:12 AM, Mathijs Kwik <math...@bluescreen303.nl> wrote:
> I have a few things that need to get run after waking up my laptop
> (things like hdparm to set device power options/spindown time).
> I created oneshot, remainafterexit services for those and made them
> wanted by multi-user.target.This works fine for the first boot.

Are you sure you want RemainAfterExit? Without it you should be able
to set WantedBy=sleep.target and After=sleep.target.

> As I consider these services "dead" after a suspend/hibernate, I added
> Conflicts=sleep.target, so now systemd is aware that these services
> are no longer active after a wakeup.
>
> Now I would like to somehow have these services restart on wakeup.
> I can add these services to some new target(wakeup.target), but I
> don't know how to proceed from there. I thought of making
> wakeup.target WantedBy suspend.target, After suspend.target, but since
> suspend.target pulls in sleep.target (which conflicts with these
> services) that will fail. More so, after wakeup.target is started the
> first time, it will never go down itself, so the second wakeup won't
> do anything. The same is true for multi-user.target, once that is
> reached/activated on first boot, it never deactivates until shutdown.
>
> How should a situation like this be handled?
> Ideally, I don't want to use:
> - /usr/lib/systemd/system-sleep  (considered hacky)
> - a service/script that runs "systemctl start ..."  (secret
> dependency, hidden from systemd)
>
> Thanks,
> Mathijs
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