![]() For instance, based on the quoted specs, this one might work: This makes me think that attaching a USB to Ethernet dongle would be an inexpensive solution to obtain WOL from power applied capability. Apparently the BIOS was set to wake on USB. But one server was attached to an APC UPS via a USB cable, and the signals from the UPS (this was just a normal shutdown, not a power loss even, so the UPS was still live) woke it back up shortly after it shut down. There was a scheduled cooling outage for our machine room so all the machines needed to shut down before that, with rtc wake set to get them back up again at the appointed time. I recently ran into a sort of converse problem. Server class machines can often be set up to work with WOL from initial application of power. The only machine I ever had that DID listen after a power outage was my now gone HP D元80 G5. It actually only works after a power down, not on recovery from a power failure or when the machine is first plugged in, or the power strip turned on. One last thing, find the service or script which is turning off the network during shutdown and be sure that it is not resetting the network interface, and in so doing clearing the WOL setting you made earlier. This is a bit Windows specific, but most of what it says applies to Linux too: If it is for an unattended server other options which would allow you to regain control remotely would include setting an rtcwake event every day (so it will restart from an unexpected shutdown), boot on power on (so it will start whenever power is newly applied), or something like Dell's iDRAC (for in band or out of band system management). That can lead to confusing results if one unwittingly tests for WOL in one OS after plugging in and in the other OS after a shutdown. I have encountered machines which "support" WOL but there is no way to configure it as "on" in the BIOS so that it actually only works after a power down, not on recovery from a power failure or when the machine is first plugged in, or the power strip turned on. The result would be very mysterious if they are both sending the same thing. Your machine may WOL from a directed packet but not from a broadcast one, and it could be that the phone is sending the former and your router the latter. Install wireshark or some other equivalent and log what your iphone and router are actually sending. It can't be waked up by my router,but it can be waked up by my app on my iphone. Okay, so, your device forgets that it works with wol. ![]() Built-in (ie, on the motherboard) devices are more likely to My limited experience with it says that added-in cards may say they do,īut don't. And it mayĬlaim to support wol but then "forget" that it does after a reboot. The device may claim to support wol but not, in fact. You care about the lines that say "Wake-on". Supported link modes: 10baseT/Half 10baseT/FullĪdvertised link modes: 10baseT/Half 10baseT/Full
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