[systemd-devel] Suspend does not work from a service

[Cecil Westerhof]

2016-03-21 10:34 GMT+01:00 Colin Guthrie <colin at mageia.org>:

> Cecil Westerhof wrote on 19/03/16 23:54:
> > 2016-03-18 17:16 GMT+01:00 Cecil Westerhof <cldwesterhof at gmail.com
> > <mailto:cldwesterhof at gmail.com>>:
> >
> >     I wrote as script to put my netbook into suspend when it is locked
> >     for five minutes and not connected to the AC adapter:
> >
> >
> https://github.com/CecilWesterhof/BashLibrary/blob/master/bin/suspend.sh
> >
> >     This works perfect when I start it from the command-line, but not
> >     when I use it as a systemd service. Then I get:
> >         Failed to start suspend.target: Access denied
> >     when the
> >         systemctl suspend || true
> >     is executed.
> >
> >
> > ​For what it is worth: normally ‘systemctl​
> >
> > ​suspend’ returns 1, but from the systemd service it returns 4.​
> >
> >
> >
> >     ​What could be happening here? And how do I solve it?
> >
> >     My service file:
> >     [Unit]
> >     Description=Suspend machine when locked and no AC adaptor
> >
> >     [Service]
> >     Type=simple
> >     ExecStart=/usr/local/bash/bin/suspend.sh
> >     Restart=always
> >     User=cecil
> >
> >     [Install]
> >     WantedBy=multi-user.target
> >     ​
> >
> >     ​On a related note​: why does:
> >         systemctl suspend
> >     give an exit status of 1?
> >     And why does it returns immediately? I had to add a sleep 5 to my
> >     script to make it work.
>
> You're running the script as the user cecil (User=cecil).
>
> I suspect the problem is not so much the fact that it's run as this user
> (you can probably issue "systemctl suspend" when logged in as the user
> right?
>

​The problem was that from the command-line suspend and hibernate could be
run, but not from cron, at, or a service. I solved it by using sudo with
NOPASSWD in the script.

-- 
Cecil Westerhof
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