[m_eiman]

This is the only reasonable solution. I've got an OLED LG "TV", connected to an Apple TV and a receiver for proper audio (using HDMI ARC).

To turn everything on, I press a button on the Apple TV remote and everything is up and running within five seconds or so (from standby/sleep mode). Powering off the Apple TV also turns off the display and the receiver via HDMI CEC.

Edit: http://www.eiman.tv/misc/power-on.mov

[Sjonny]

I found that my receiver was still using 50W while in "CEC-ready standby", while it's only 2W in normal standby, so I never use it. I'll just press a few more buttons.

[loufe]

That's incredible. 50W is wholy unnacceptable.

[anticensor]

Indeed unacceptable. That figure is quite comparable to S1 sleeping state of a desktop. Whereas a computer consumes ~10W in S3 state and can even wake up out of that when triggered by LAN.