I remember looking into this and it seems like a lot of motherboards/graphics cards don't support HDMI CEC for some reason.
That would be the ideal way if it worked though
That would be the ideal way if it worked though
For example:
> The PulseEight USB-CEC adapter works by passively extending all the pins of the HDMI connector on from the "PC side" connector to the "TV side" connector, save for the CEC pin, which is intercepted. The data going through that pin is instead exposed over a USB serial interface to let a PC control and monitor CEC traffic
Edit: Ah, but that adapter wouldn't work for powering on the PC I suppose, I don't think USB has something like WoL.