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Author: Ralph Ronnquist
Date:  
To: dng
Subject: Re: [DNG] Preparation of the network interface for Wake-On-Lan?
On Sun, Dec 10, 2023 at 01:19:48PM +0200, Lars Noodén via Dng wrote:
> On 12/10/23 01:05, Ralph Ronnquist wrote:
> > [...] but I would go to "ethtool" to begin with. Its man page talks
> > about Wake-on-LAN options.
> Thanks, Raplph and Lehel. The interface seems to support WOL, but
> either it or the router side or both power down when the rest of the
> hardware is off. Here's what I have so far:
>
> $ doas ethtool -s eth0 wol g
>
> $ doas ethtool eth0
> Settings for eth0:
>     Supported ports: [ TP     MII ]
>     Supported link modes:   10baseT/Half 10baseT/Full
>                             100baseT/Half 100baseT/Full
>     Supported pause frame use: Symmetric Receive-only
>     Supports auto-negotiation: Yes
>     Supported FEC modes: Not reported
>     Advertised link modes:  10baseT/Half 10baseT/Full
>                             100baseT/Half 100baseT/Full
>     Advertised pause frame use: Symmetric Receive-only
>     Advertised auto-negotiation: Yes
>     Advertised FEC modes: Not reported
>     Link partner advertised link modes:  10baseT/Half 10baseT/Full
>                                          100baseT/Half 100baseT/Full
>     Link partner advertised pause frame use: Symmetric Receive-only
>     Link partner advertised auto-negotiation: Yes
>     Link partner advertised FEC modes: Not reported
>     Speed: 100Mb/s
>     Duplex: Full
>     Auto-negotiation: on
>     Port: Twisted Pair
>     PHYAD: 0
>     Transceiver: external
>     MDI-X: Unknown
>     Supports Wake-on: pumbg
>     Wake-on: g
>     Link detected: yes

>
> And that has been made persistent across reboots:
>
> $ grep -A1 eth0 /etc/network/interfaces
> auto eth0
> iface eth0 inet dhcp
>     ethernet-wol g

>
> When I power that machine down, the network interface on the router
> shows "No Carrier" for that cable, so WOL does not work from either the
> router or or the other systems on the same LAN.
>
> I'll try some more experimentation.


A deep dive into random web pages came to the suggestion of setting
/sys/class/net/eth0/device/d3cold_allowed to 0
(https://forums.linuxmint.com/viewtopic.php?t=220964)

YMMV, Ralph.

>
> /Lars
>
>
>
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