Still can't use 5.1 or 7.1 through HDMI and it's unacceptable

KIds that use monitors still have audio via HDMI. Using HDMI does not have to equate to 7.1 or 5.1.

Mine still changes from DTS 5.1 (or uncompressed 5.1) to Uncompressed 7.1 all by itself.

When I had the TV box connected via HDMI it used to change itself to Stereo.

True story! Thanks MetaWorldschizO!

BusGod, 5.1 and 7.1 is not supported through HDMI, it is by S/PDIF. However, that is not what was said... What was said was: "I also am very disappointed that there is no 5.1 Dolby support on the optical out" which is simply incorrect... it is supported
and it does work. By what you said: Is S/PDIF not working or is HDMI not working? Most likely it is a setting within the AVR or Settings > TV and Cable > change HDMI to 5.1/ 7.1. Let me know -Cheers

An optical cable simply can't pass 5.1/7.1 uncompressed, only HDMI or multichannel analog can (the latter of which the Xbox doesn't have). As such your headset (presumably optical) does NOT and cannot support 5.1/7.1 uncompressed. Instead it supports 5.1
Dolby Digital (DD=compressed), and virtually creates 7.1 from the 5.1 through processing (optical can't pass 7.1 DD+ either, only 5.1). Currently, the Xbox One cannot output Dolby Digital 5.1 over optical, which is why you do not get surround sound in your
headset. It is also not surprising that your TV is not handling 5.1/7.1 uncompressed properly, as that is something you really need an audio receiver to handle. What is probably happening is your TV is downmixing the uncompressed 5.1/7.1 to some sort of stereo
(2.1?), resulting is loss of some audio channels. The rest you hear as"virtual surround sound" created by your LG system.

The solution for you is to get a proper audio/video receiver (recommend Onkyo or Denon) that has HDMI inputs, can handle uncompressed 5.1/7.1, etc.; OR wait until the One can output DD 5.1 over optical, When the latter happens, keep in mind that most TVs
will NOT pass DD 5.1 out over optical. Perhaps yours does (some Vizio models do). If yours doesn't, you will never get true DD 5.1 (just because you hear sound from all speakers doesn't mean you are getting true DD 5.1) from your current setup and would need
to run the optical out directly to your LG system, instead of through the TV. Hope that helps.

There is a huge thread Hybrid Alien linked. Other then that, What type of TV? What type of hookups? HDMI all the way through to a TV? Using a Soundbar? Stereo? PCM 5.1 or 7.1? Have a receiver?