Custom Resolution Utility (CRU)

[opa99]

(11-08-2023 03:57 AM)ToastyX Wrote:  

(11-06-2023 02:53 PM)opa99 Wrote:  Happens on all three resolutions I have tried, including the 3840x2160.
Currently the resolution I am using is 3840x1500, 120hz, HDR.

This issue has brought me to the point where I am considering if my AVR bought in 2015 (while being a rather capable at that time) should be upgraded. Therefore I do not know if all of these issues could be resolved by replacing the AVR with one that can do eARC. I have not yet discovered how to tell what signal is actually sent with these EDID changes to TV (Windows looks as if it could be sending LPCM 5.1, but the TV refuses to send it to AVR)...

You said the setup works with any other source than the PC, so ARC should be sufficient unless the TV is doing something different when passing audio from the PC to the AVR. What happens if you set the channels to 8 instead of 6? For the lower resolutions, there needs to be enough horizontal blanking to transmit the audio format. The default 3840x2160 should have enough.

Thank you ToastyX for reminding me to also reflect or at least read what I wrote earlier.
After doing that, I realized that I also wrote that when adding a spatial filter (Dolby Atmos for home theater) in Windows settings, 5.1 audio is transmitted all the way to the receiver. Although compressed (Windows is encoding LPCM 5.1 to lossy Atmos 5.1). This leads me to think that maybe CRU did exactly what I asked it to do, but it is the limitation of the TV/ARC, since in all other cases (spatial filters disabled) I understand that PC is always transmitting LPCM, and ARC can only carry LPCM 2.0, so if the TV is not encoding it before sending, it will not be transmitted in 5.1/7.1 to the receiver over ARC.

Nevertheless, I did check the blanking, and I must say I do not understand what that means, but it reads:
3840x2160: 560 pixels, 90 lines
3840x1500: 160 pixels, 43 lines

I have also attached screenshots of all the parameters for these two resolutions in detailed resolutions window.