On the to-be-woken-up computer make sure to enable ACPI/APM (S3/STR) and Wake-On-Lan(WOL) in the BIOS and add in /etc/network/interfaces:
post-up /usr/sbin/ethtool -s eth0 wol g post-down /usr/sbin/ethtool -s eth0 wol g
Write down the MAC-ADDRESS. Powerdown the computer. Only when the computer is powered down to S3 or STR(Suspend to ram), the computer can be woken up. A sudden power-failure might mess with everything so the computer might not respond then to WOL requests. For STR some additional action are necessary, because STR in Linux might/will totaly power-off the ethernet device. See this link for more info on that subject.
On another computer install a wake-on-lan package:
dpkg -i wakeonlan
and wake up the sleeping computer:
wakeonlan MAC-ADDRESS
note: create a small shell script in for example ~/bin/wol_dev.sh to make life easier and to not forget the MAC-ADDRESS:
#!/bin/sh # # Wake on lan server: dev # # dev eth0 00:02:44:57:dc:33 # dev eth1 00:10:4b:0e:ce:13 wakeonlan 00:02:44:57:dc:33
That’s all!
Links: