I’m looking into the viability of setting up a poor man’s IPMI on my 1950X rig, I’m actually lusting after a 3970X but it’s alright, if the technique pans out well, i will do it on all subsequent systems.
The concept is to connect a raspberry pi to the machine’s serial port and it will allow me to remotely administer the machine via SSH using physical connection to the linux serial console if the machine has any problem that prevents it from starting up properly and connecting to the network.
The pi can also use GPIO to enable me to control power or reset to the board, at least in theory, but something will need to be figured out for how to do that without cutting power to the pi when it happens. I think having the pi behind a lithium battery “UPS” might do the trick nicely there.
So I looked at the motherboard manual and it makes no mention of a Serial or COM port. Does that mean I’m screwed? Would I need to get a RS-232 PCIe card? Would that even work?
So far my research indicates that a USB to serial adapter would not work as the linux serial console would need to initialize before USB devices do. I could potentially get a Getty tty on one of those though? So maybe that is a way in which I wouldn’t be screwed. But it’s lame. My other board, an X99 Sabertooth (also ASUS) does have a COM header.