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elb

Member

From: France

Registered: 2006-03-17

Posts: 24

Website

[solved] Cannot activate wake on lan with systemd

I have activated successfully wake on lan with systemd, following these guidelines :
https://wiki.archlinux.org/index.php/Wol#With_systemd

My wol@.service is:

[Unit]
Description=Wake-on-LAN for %i
Requires=network.target
After=network.target

[Service]
ExecStart=/usr/bin/ethtool -s %i wol g
Type=oneshot

[Install]
WantedBy=multi-user.target

It worked nicely until I recently had to reinstall my server (following a disk replacement). Since then systemd fails to activate wake on lan.

Output from systemctl status wol@enp0s4 :

● wol@enp0s4.service - Wake-on-LAN for enp0s4
   Loaded: loaded (/etc/systemd/system/wol@.service; enabled)
   Active: inactive (dead) since ven. 2014-07-25 11:21:28 CEST; 23min ago
  Process: 181 ExecStart=/usr/bin/ethtool -s %i wol g (code=exited, status=0/SUCCESS)
 Main PID: 181 (code=exited, status=0/SUCCESS)

Output from ethtool enp0s4|grep "Wake" :

        Supports Wake-on: pg
        Wake-on: d

If I explicitly start the service with systemctl start wol@enp0s4, then ethtool enp0s4|grep "Wake" shows:

        Supports Wake-on: pg
        Wake-on: g

My guess is that the service does not start at the correct timing at boot.

I have also tried wol-systemd package from the AUR without success.

Last edited by elb (2014-07-25 15:02:21)

elb

Member

From: France

Registered: 2006-03-17

Posts: 24

Website

Re: [solved] Cannot activate wake on lan with systemd

After a fiew tries and reading docs, I found that replacing network.target with multi-user.target in wol@.service seems to work for me.