On Sun, Apr 5, 2009 at 4:39 PM, Sharpe, Sam J < sam.sharpe+lists.redhat@gmail.com sam.sharpe%2Blists.redhat@gmail.com>wrote:
2009/4/5 Timothy Murphy gayleard@eircom.net:
Thanks for the response.
Firstly, I have "Wake on LAN" enabled in the BIOS.
Secondly, rather to my surprise the ethernet light goes off when I "Hibernate" (I should confess at this point that I am running Centos-5.3 on this machine, but thought that I was more likely to get a helpful response on the Fedora list!) but stays on when I shutdown.
In neither case does ping or (attempted) ssh have any effect. How exactly is one meant to "wake from LAN".
One uses Magic Packets. http://en.wikipedia.org/wiki/Wake-on-LAN
To do this, first install a wol client on another machine to broadcast the wakeup: # yum -y install wol
Then read about the options: http://linux.die.net/man/1/wol
Then one wakes the target machine...
All my Intel mobos with onboard network can be waked up (no need to install anything, but net-tools):
sudo /sbin/ether-wake ip-addr (wakes computer with ip-addr)
Then, in /etc/ethers, I have the mac addresses associated to IP addresses:
# see man ethers for syntax # andromeda XX:XX:XX:XX:XX:XX ip-addr
Never tried with suspend or hibernate. Only when the computer power is off.