* Timothy Murphy <gayleard@xxxxxxxxxx> [20090405 22:46]: > Roberto Ragusa wrote: > > Thanks very much. > > > Wake On LAN should actually be able to wake a system up > > from power off state, so it should reasonably work > > for suspended systems too. > > > > As a first thing, the NIC LED (or the LED on the ethernet switch) > > should be on; it will be on even when the system is switched off, > > if WOL is active. > > Surprisingly, it is on when I "shutdown -h" the machine, > but off when I set the machine to hibernate. That's because the drivers deal with ACPI states S3 and S4 different to S5. You *can* wake the system up from S3/S4, but you need to issue a command first. # echo -n LAN > /proc/acpi/wakeup Once you have done this, then you can suspend/hibernate and WOL the system. The patch for this should be in CentOS 5.3. Also, different drivers may behave differently in this respect. I only know of e1000/e1000e behaving correctly with this as I've not tested it on other hardware. > > Then WOL has to be enabled. You can trust the BIOS > > or, better, run > > > > ethtool eth0 > > > > and you will get something like > > > > Supports Wake-on: pumbag > > Wake-on: g > > I had forgotten about ethtool. > I do indeed get "Wake-on: g" > which I see means "Wake on MagicPacket". > > So I must see if and hopefully how > I can send the machine a "MagicPacket". ether-wake <MAC> is what I used when I did all the testing on this. It's a tool that generates the exact packet needed. -- Anders Rayner-Karlsson <anders@xxxxxxxxxxxxxx> All-Round Linux Tinkerer, RHCE and PITA DeLuxe -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
