Wake on lan from power OFF
It appears that Mac's don't provide wake on lan from complete power off. I have no problem powering up my Mac from sleep, but it won't turn on from power off (like every PC I've tried). This is not difficult to do, as every $200 PC on the market w/ WOL does it.
I have my Mac on a large shared UPS with serveral other computers and network gear, etc.
There is a linux server which actually communicates with the UPS. During a power failure, that linux box will connect to ever other machine on the network sharing this UPS and tell them to SHUT OFF, not sleep, because hard power failure is emminent. When all remote machines are off, the linux machine shuts off, and the UPS powers off it's outlets.
On power recovery, the UPS waits until it's batteries are sufficiently recharged, and turns back on, powering up it's protected outlets. All the machines see power come back on, and are set to reboot.
Here is the problem. If the power comes back on AFTER the remote machines are shut down, but before the linux box turns off, the linux box sees power recovery, and the UPS never shuts off it's protected outlets. Now all the remote machines are off, and won't ever see their power cut off, and then recover, so they don't turn back on.
The PCs are easy... hit them with a wake-on-lan packet and they reboot from complete power off... but not the trusty Mac because Apple didn't implement that part of the wake-on-lan standard!
So... I'm faced with abandoning wake on lan for all the machines and building an interface with a big relay to KILL power to all remote machines to power them back on. Isn't this more than just a little silly? Apple... why not just make your machine comply with the standard so that it plays nicely in a mixed environment!
Providing wake on lan from sleep, and power on with power recovery, but no wake on lan from OFF is just ridiculous.
I welcome any ideas...
PowerMac G5 Dual 2.0 Mac OS X (10.4.8)
I have my Mac on a large shared UPS with serveral other computers and network gear, etc.
There is a linux server which actually communicates with the UPS. During a power failure, that linux box will connect to ever other machine on the network sharing this UPS and tell them to SHUT OFF, not sleep, because hard power failure is emminent. When all remote machines are off, the linux machine shuts off, and the UPS powers off it's outlets.
On power recovery, the UPS waits until it's batteries are sufficiently recharged, and turns back on, powering up it's protected outlets. All the machines see power come back on, and are set to reboot.
Here is the problem. If the power comes back on AFTER the remote machines are shut down, but before the linux box turns off, the linux box sees power recovery, and the UPS never shuts off it's protected outlets. Now all the remote machines are off, and won't ever see their power cut off, and then recover, so they don't turn back on.
The PCs are easy... hit them with a wake-on-lan packet and they reboot from complete power off... but not the trusty Mac because Apple didn't implement that part of the wake-on-lan standard!
So... I'm faced with abandoning wake on lan for all the machines and building an interface with a big relay to KILL power to all remote machines to power them back on. Isn't this more than just a little silly? Apple... why not just make your machine comply with the standard so that it plays nicely in a mixed environment!
Providing wake on lan from sleep, and power on with power recovery, but no wake on lan from OFF is just ridiculous.
I welcome any ideas...
PowerMac G5 Dual 2.0 Mac OS X (10.4.8)
