Custom Resolution Utility (CRU)

[jwshrive]

Hi there. I recently bought a new LG OLED55B7T TV. However, my old AV system cannot do 4K, so I've had to change my computer's HDMI outputs to go directly to the TV (Windows 10, Nvidia GTX 1080Ti). The problem is (and after hours with LG support), they have told me the TV cannot pass-through 5.1 and thus on the computer it would only show as 2.0. This was quite the let down.

I stumbled upon the CRU tool and in the extension block changed it so that 5.1 should be recognised. After restarting Windows, the sound options now give 5.1. But alas, when I try to do a test, I only get sound from the left and right speakers but nothing else. So my question is, am I doing something wrong? Should this be possible? Have I perhaps missed something, or won't the Nvidia drivers work with a custom EDID?

The instructions I found elsewhere on the web are outlined below:
"On Windows the EDID data can be faked by SW - no HW box needed between your Windows HTPC and TV. Just use utility "Custom Resolution Utility" (search the web and download, it's easy to find) and create your own EDID according to your needs (create Custom extension block - add Audio formats 5.1, add Speaker setup 5.1, add HDMI support with "Support audio information" checked) and restart Windows. Then you'll be able in Windows speaker setup to choose 5.1 to be fed to your TV."
Source: http://www.minixforum.com/threads/cant-c...nels.6498/