For the last few weeks my Officejet Pro 8100 is sometimes reluctant to wake from sleep. It is a wired Ethernet connection and its connection shows up with an IP address on the printer web page. I have done a reset and reinstall with no improvement. It used to work OK. I am using Mountain Lion OS 10.8.3. I have to go to the printer and hold the paper feed button to wake it. The Ethernet connected sign shows on the LCD. As the printer is at the other end of the building and I am a severe arthtic, this is very inconvenient for me.
I had updated the firmware this mornng after other solutions had failed. It does seem better and at least I can now access the printer details, whereas before it could not find the printer. It was very difficult to update the firmware, as the updater could not find the printer, even with its IP address. In the end, I had to take a laptop to the printer room and connect it to the printer with a USB cable.
I've had a similar problem. Updated the firmware via ethernet connection and that didn't help. We are using a static ip address via ethernet into a cisco switch. The thing that fixed it for us is we set the auto negotiation on the printer to 100TX - Full and that fixed it - factory default on ethernet is auto negotiation. The interesting thing now is after the printer goes to sleep a print job will wake it almost immediately but the lights on the NIC card are NOT on. HP software does some amazing things . . .
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