I have a box running Debian Unstable that I'd like to power on via
wake-on-lan. I had it running some time in the past; at some point in
time it stopped working, but I didn't care that much about it so I
didn't investigate it further.
Now I did investigate, and this is what I found out: given that the BIOS
is configured correctly, I can remotely wake the box if I shut it down
before it boots Linux (it works if I shut it down while the Grub menu is
visible), but it doesn't work if I shut it down when Linux is running. I
tried shutting it down via poweroff, shutdown -h now and pushing the
power button, but all with the same effect: no response to wake-up packets.
So, what can I do to enable the wake-on-lan feature again?
If I have been able to see further, it was only because I stood
on the shoulders of giants. -- Isaac Newton