On 26/02/12 17:01, Joe Wronski wrote:
> Hi,
>=20
> In my Debian Linux 6.0 /etc/network/interfaces, I have:
>=20
> #allow wake on lan
> #see wiki.debian.org/WakeOnLan
> iface eth0 inet dhcp
>        post-up /sbin/ethtool -s $IFACE wol g
>        post-down /sbin/ethtool -s $IFACE wol g
>=20
> And it doesn't wake up when I send it wol magic packets.

Oh, this is a sod to get working... I assume you've checked that Ethtool
is installed?

Here's an extract from my local Wiki -- it's for Ubuntu, but might work
on Debian too. The troubleshooting stuff should be very useful to you :)


=3D Wake-on-LAN on Ubuntu =3D

=3D=3D On a machine where eth0 is run in DHCP mode =3D=3D

In /etc/network/interfaces, assuming you want to enable WoL on eth0:

auto eth0
iface eth0 inet dhcp
    ethernet-wol g

.... other interfaces go here ...


=3D=3D On a machine where eth0 is run in Static mode =3D=3D

In /etc/network/interfaces, assuming you want to enable WoL on eth0:

auto eth0
iface eth0 inet static
    ethernet-wol g
    ... static IP specs ...


=3D=3D On a machine where eth0 is bridged =3D=3D

In /etc/network/interfaces, assuming you want to enable WoL on eth0:

auto eth0
iface eth0 inet manual
    ethernet-wol g

.... bridging config here, auto br0 and all that ...

If 'auto eth0' is not specified, Ethtool will NOT be run!

=3D=3D To prove this works =3D=3D

 sudo ethtool eth0

Which should produce output similar to this:
 Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: pg
        Wake-on: g
        Current message level: 0x000000ff (255)
                               drv probe link timer ifdown ifup rx_err
tx_err
        Link detected: yes

Note that "Wake-on" is set to "g". "g" means 'Magic Packet', "d" means
'Disabled'.


=3D Waking up a machine =3D

You need Etherwake:

 sudo apt-get install etherwake

And to wake a machine up:

 sudo etherwake 12:34:56:78:9A:BC

Or alternatively:

 sudo etherwake hostname

The hostname alternate will only work if a MAC-address-to-hostname
mapping is present in /etc/ethers. The MAC address alternate will always
work (assuming there's a machine present on the LAN with the specified
MAC address, of course!)


Best of luck -- Linux can be pretty brutal when it wants to be...

Cheers,
--=20
Phil.
piclist@philpem.me.uk
http://www.philpem.me.uk/
--=20
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