G3223Q, HDMI signal lost when I switch source

Question

Hi all,

I have my pc and ps5 connected to my new G3223Q monitor. When I switch the source to the ps5, no problem. But when I switch back to the PC source, no signal is detected. I have to unplug and replug my cable to get the signal from the PC. It's very annoying. Please don’t tell me to disconnect/change cable or hard reset monitor, I have already tried and nothing changed.

Thsscsmc · Accepted Answer

I found the reason! It's because of the smart HDR. Disable this option and there will be no more signal problem

DELL-Chris M · Answer

To receive assistance from Dell support agents, click the "Get help now" icon on the right. Share with them the private monitor Service Tag, 20 digit serial number, and all of your troubleshooting.

Our users will need more data before they can assist =

We can infer that that the G3223Q HDMI in is connected to the PC HDMI out. But what PC operating system? What PC video card?

How is the G3223Q connected to the PS5? Using which ports and cable?

Thsscsmc · Answer

PC is connected to HDMI 1, PS5 to HDMI 2 My PC is on Windows 11 and I have a RTX 3070

pogokrk · Answer

Nope, not working for me. I have Smart HDR disabled all the time and still my monitor doesn't recognize PS4 signal unless I switch to PIP/PBP or turn off pc and restart PS4 which must be the only source.

thomas742 · Answer

Same issue here (Win11, 3080Ti). What I did to circumvent (not fix) the problem on Windows is writing a powershell script that sets the refresh to 60Hz and then back to 144Hz again. Somehow this triggers the signal detection by the monitor. I have created a keyboard shortcut for this script, so whenever the monitor is giving me 'no signal' on my windows machine, I press the keyboard shortcut and the monitor starts picking up the signal.

Roong · Answer

Hi Thomas, mind sharing the script?

Monitors

G3223Q, HDMI signal lost when I switch source

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