Display issue

Question

I have a 5 year old gaming PC with an NVIDIA GPU (GeForce RTX 2070 SUPER). I had always ran it with an old (2006) Samsung TV as the sole display connected to the PC via HDMI and worked perfectly for what I needed. A few weeks back a lightning hit our house and it turns out it damaged the HDMI ports both on the GPU and the TV that I was using. To test whether the DP ports in the GPU were still working, so I could use those instead of HDMI I bought a DP to HDMI Active adaptor and plugged the PC to the other TV HDMI port (the one not impacted, which I tested before with a Fire TV and thankfully it was working too). The PC will boot and the ASRock logo will display briefly but then the TV will go blank and display a "not supported" message. To double check I unplugged the HDMI cable from the TV and plugged it to a PC monitor and it worked like a charm, so I figured it was probably a resolution issue, so I proceeded to connect the PC to another on of the DP ports while keeping the PC monitor plugged as well (effectively having two displays). I then went to the NVIDIA control panel and proceeded to adjust the resolution for the TV to one that would be supported by the TV and right there and then the TV came to life with the PC signal. I then made sure the resolution in Windows was the same as in NVIDIA control panel for the TV and with that set proceeded to restart unplugging the PC Monitor from the PC to test if the TV as sole monitor was working. No luck. As before the ASRock logo displays properly at boot but then it loses signal and displays the dreaded "not supported". I am assuming that for some reason the PC is reverting to a resolution not supported by the TV. Funny thing is if I plug the PC monitor back to the PC (with the TV also plugged), then the TV image comes back to life and I have an extended desktop. Basically as long as the other monitor is connected to the PC (even if that monitor is disconnected from power) the PC assumes there are two displays and the TV will work, but the moment I disconnect the other monitor from the GPU, the TV goes back to "not supported". The thing is I want the TV to be the sole display for that PC. Any help to solve this would be greatly appreciated.

Answer 1

Hi ,

It could be a resolution issue. Do the following: connect the TV and monitor, access the Nvidia panel, take a screenshot, and post it here in the "Change Resolution" tab.

Can you tell me what your TV's maximum resolution is?

What's happening is that you're using an adapter. It doesn't recognize the resolution coming from the TV, but rather from the adapter. It depends on the model.

Thanks