Custom Resolution Utility (CRU)

[chillly]

(12-27-2020 03:26 PM)ToastyX Wrote:  

(12-27-2020 02:20 AM)chillly Wrote:  I was mainly trying to use CRU to enable 7.1 DD+ passthrough ARC from my Samsung Q70 TV. By default, the control panel->sound->Samsung->speaker setup only showed Stereo. But the device properties show it supports DD(5.1) and DD+(7.1), which both should work through ARC (and they do work from the native netflix app on the TV).

So I ran a HDMI cable from a second port on my GFX card to my receiver directly, and looked at that 'monitor' in CRU in the extension block Speaker Setup to see what was checked (that connection allows 7.1 speakers). Then I edited the Samsung in CRU to check those same speakers. Then rebooted.

But this doesn't seem to have had any effect. I also tried exporting those settings as an INF and doing the advanced boot with driver signing disabled, etc. Still didn't do anything... only shows Stereo as an option.

I also tried changing the order of supported formats to move PCM to the bottom and move DD+ to the top, since the TV is still only receiving PCM from the computer. But this also had no effect.

"Speaker setup" is informational and doesn't have any effect. The audio formats data block should have AC-3 and E-AC-3. You said the device properties show it supports DD (5.1) and DD+ (7.1), so they should already be available without any changes. What is the resolution for the "monitor" set to? It needs to be a TV resolution like 1920x1080 @ 60 Hz so there's enough blanking to transmit the audio.

I'm thinking it's not a matter of support but more of a matter of getting Windows to send DD instead of PCM, which may not be a EDID issue. I'm at 4k but I can send 4k@60 through my receiver and games sends 7.1 PCM fine if I configure that 'monitor' as 7.1 speakers (which it has the option to). But I know my TV can't send 7.1 PCM back through ARC, so need it to encode it. And I'm running freesync to the TV. When I'm playing a movie or something from like Kodi that starts with a DD signal, it will passthrough ok.