i have been following this recently without signing up. i have a newer pc with intel hd 2000 or something and noticed the issue with deep color over hdmi as well as the ycbcr setting not sticking when enabled.
i just checked now and saw a new driver, 9.18.10.3071.
i installed it now and it has redesigned the interface of the intel graphics. but i still have issues with the ycbcr setting not sticking.
the problem i have on my set up is that i have it connected to my onkyo receiver, which then splits the audio to the surround sound and the picture to my projector. i cant even enable the YCbCR setting, it simply tries to enable it and then reverts to RGB. so as a fix I can VNC into my PC with the PC not selected on receiver, enable YCbCr, then change receiver input to PC and the PC will show as YCbCr 24bit. But as soon as I load a game, or change Input to STB and back to PC, it will revert to the RGB 24bit with the Limited color range selected. I also have no option to manually change my projector or receiver to handle Limited and pass through Limited. I was under the impression these days that most devices auto pass this information correctly, and so a device will auto accept what is being sent and change accordingly. i have years of knowledge and understand everything about EDID handshake issues, resolutions blah blah and recall the early common issues with devices when HDMI was being first implemented. , but I can't be bothered trying to change this GPU EDID settings manually to work myself.
i was quick to pick up on this issue the other day when setting up this PC and then found these discussions online. luckily i will be getting a Nvidia 670GTX very soon, as using the Intel GPU was only my interim solution. But in saying that, it is disappointing that from a media playback perspective, this Intel GPU is very capable of handling Bluray, bitstream HD audio, and possibly 3D playback. Yet the lack of a simple working Deep HDMI or YCbCr enabling feature can really affect the true potential of this.