WOL (Wake On LAN) validation

krylon · 26. August 2016

Trying to get basic WOL (Wake on LAN) functionality so my asus rt-ac66r router can start my OMV up after power failure (UPS shutdown after 5 min).

I validated System > Network > Interface > eth0 > IP4 > WOL = YES

/etc/network/interfaces looks good

Code

root@nas:~# cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback


# eth0 network interface
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
    pre-down ethtool -s $IFACE wol g
iface eth0 inet6 manual
    pre-down ip -6 addr flush dev $IFACE

Alles anzeigen

But ethtool shows setting is not present.
root@nas:~# ethtool eth0 | grep Wake
Supports Wake-on: pumbg
Wake-on: d

And I have the setting set in BIOS
Wake on LAN S4 = Enabled

NOTE: I gather this means I can only WOL from hibernate (S4) state.
https://technet.microsoft.com/en-us/library/bb693821.aspx

I validated system supports all pm-* states and even entered them one-by-one, so that's good. I even set WOL manually using ethtool -s eth0 wol g before entering the states, but still no-go.

I even looked over the debian wiki, but am reluctant to execute anything since OMV has auto-generated configs based on GUI settings (from what I can tell).
https://wiki.debian.org/WakeOnLan

But they did note to have post-up and post-down statements in the interfaces file so that WOL should work even if interface is not brought down properly.

Any help is appreciated.

subzero79 · 26. August 2016

Depends on the motherboard. Some are able to wake up from machine completely off, s3 and s4 others just S4. Mine for example doesn't work with server off, but I can turn it on with the ipmi console.

krylon · 27. August 2016

I understand it is dependent upon the motherboard, but the BIOS has the setting and the NIC is integrated. I would assume that if the motherboard didn't support it, the BIOS wouldn't have the option.

Or is there something else I need to check?

subzero79 · 27. August 2016

What's the mb vendor/model?
If it says S4 I'll only work from hibernate.

krylon · 28. August 2016

It's a spare PC I have laying around to do this POC (Proof Of Concept) with. HP pavilion a1620y.

I'm not concerned about the hardware as much as I am the OS configs. I'm mainly looking for a checklist of things to check to ensure I can get WOL working. After all my reading, I think there is a disconnect between what the OMV GUI is showing vs. what I'm seeing at the CLI.

In addition to that, I need to figure out how to make UPS shutdown put system into hibernate instead of halt, but I'll worry more about that once I can get pm-hibernate to get the system into a wakable state.

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