Re: HowTo: Detect Laptop waking up from suspend from Emacs

[Stefan Huchler <stefan.huchler@mail.de>]

raman@google.com writes:

> Background:
>
> I run Emacs as my primary environment -- ie I do everything in Emacs
> on Linux.
>
> So when I open my laptop lid, my laptop wakes up from suspend and
> Emacs is where I left off.
>
> I'd like to set things up so emacs runs a set of actions when the
> laptop comes back from suspend -- typically, say 5 seconds after
> wake-up. Here, all actions are emacs functions.
>
> So Q:
>
> From Emacs --- perhaps an idle-timer, how do I detect when the laptop
> returns from suspend?
> -- 
>
> -- 

if you run the deamon you could maybe write in some external tools
somethnig like:

/usr/bin/emacsclient -e (wakeup-starter)

and then something like that in your config

(defun...
   (sit-for 5)
   ....)

You can hook that command in I dont know logind? or dbus? udev? as some
rule or maybe even systemd:

https://wiki.archlinux.org/index.php/Power_management#Suspend.2Fresume_service_files


Hope that helps you.

Alternativly you could of course do a polling thing, and start that with
emacs:

(while (t) (when (timestamp differs to much from last-time) (setq
last-time timestamp) (do-your-stuff) (sleep 5)))