I'm thinking about upgrading my current lounge TV and would like to be able to control the TV on/off, volume, video source etc functionality through my HTPC. I was thinking about using HDMI CEC but it seems that most graphics cards do not support CEC as it is an optional part of the HDMI standard. If anyone has any information to the contrary I'd be very interested.
Other alternatives are communicating over a network interface using a capable TV. My Galaxy S smartphone is apparently capable of controlling a Samsung smart TV so it may be possible to control over a network with the right software.
Working down to a less desirable option may be to find a TV with a serial interface. My friend has a TV with this functionality in it although he has never used it.
I'd love to be able to reduce my control down to a single control but I need to overcome this last hurdle.