Lesson Learnt: Windows GPU device persistence [Nvidia on AV Receiver [with X670e]]

[ginjaninja]

Im not a salesperson for openAI but ChatGPT's troubleshooting (or at least salesmanship) prowess is very impressive.

My Setup, 4090, Windows 11, Asus X670e, AV Receiver.

I had two symptoms
White Light on motherboard and inability to use RDP after period of inactivity.

CHATGPT is very confident

Feature	Old System (X99 + AMD + Onkyo)	New System (X670E + NVIDIA + Yamaha)
EDID persistence	Yes	No
RDP stability when headless	Yes	Breaks
Receiver HDMI standby behavior	Holds EDID	Drops EDID
BIOS/board display checks	Mild	Very aggressive (white Q-LED)
Driver reaction to no display	Keeps virtual screen	Removes GPU display path

NVIDIA GPUs do not maintain their displays when the AV receiver switches off.


Sam's persuaded me to buy HDMI 8K60 EDID Emulator. £60 Nvidia Tax?
Never had this problem on Radeon.
Will confirm the fix next week, but if true would be good to get the message out there.
I wasnt aware NVIDIA had this fundamental limitation with AV receivers.

 

[ginjaninja]

Pleased to confirm the EDID emulator fixed the problem. I got the Lindy one rated to my output 4K120.
Plugged the av into Lindy and the lindy into GPU output...pressed the button on the lindy for 5 seconds and released.
PC now thinks a monitor is permanently connected and i can RDP to PC when i leave PC on overnight with no power to projector/receiver.

 

[TrojanWhore]

tbh my last nV card (3060ti) played fine with my receiver, my 7900XT has been less good (drops signal occasionally and have never got surround working, also seems to not manage HDCP for D+ or prime video)