PC hangs a lot and stops outputting image when connecting tv

Littellittel · April 25

Hello everyone,

I recently bought a new 4k HDR TV and connected it to my PC along my other two monitors (1440p and 1080p).
However, whenever I connect the TV or want to display something on it in 4k HDR my PC takes a long time (like a minute) to adjust to the new output device.
The screens either show only parts of the last rendered frame or are completely black. The TV also sometimes tells me that I should "check the power of my device" which is fixed after reinserting the HDMI cable.

One (really sucky) solution for me is to duplicate to the two monitors at a lower resolution, then the PC seems to handle the TV better.

My current System specs:
Windows 10 Pro 22H2 build: 19045.4291
8GB MSI GeForce RTX 2080 GAMING X TRIO Aktiv PCIe 3.0 x16 1xHDMI 2.0 / 1xUSB-C / 3xDisplayPort (Retail)
AMD Ryzen 7 3800X 8x 3.90GHz So.AM4 BOX

32GB (2x 16384MB) Corsair Vengeance LPX
MSI MPG X570 GAMING PLUS AMD X570 So.AM4 Dual Channel DDR4 ATX Retail

850 Watt be quiet! Straight Power 11 Modular 80+ Gold

What would be the best approach to this issue?
Is my system simply too slow to smoothly handle all three monitors at once?
If so, is there a solution that does not require me to perform expensive hardware upgrades?

thedayi · April 26

I don't see any reason why your specs should be an issue. Although a minute seems to be very long.

I am assuming you want all three monitors on at once. So a couple things you can try are:

1. running ddu and reinstalling your drivers

2. trying a different hdmi cable

Also got to ask are you trying to do a 4k HDR game or watching a video?

Littellittel · April 27

Thanks for the reply!

Running ddu and reinstalling drivers fixed it. It runs pretty smoothly now.

For completeness: I was just trying to do basically anything, so just showing the desktop was already a pain.

Thanks for the advice though!