Monitor Flicker and Teamviewer

joker5000

First here's the issue:

I just got a LG OLED-C1 65" for the living room. I have a house PC connected to it for basic browsing, games, etc.

The TV flickers, A LOT, when it's connected. The House PC isn't heavy on graphics.

I thought I'd try to connect via my Work PC to troubleshoot and noticed that the TV stops flickering when I connect via Teamviewer. I've been connected to Teamviewer looking at the TV and it hasn't flickered at all. But the moment I disconnect my WorkPC via Teamviewer, the TV PC starts flickering.

Does that make sense? How is teamviewer preventing this? How can I make it a perm solution on the House PC

JoshP

Hello @joker5000

Thank you for your post, and welcome to the TeamViewer community!

That is a unique question! Let's take a look.

First, the monitor flicker:

Fortunately, I have some experience with this myself!

While not every time, monitor flicker is usually going to have to do with the refresh rate of the monitor versus the display settings on your computer.

I took a look at the specs of your TV, and it appears to have a refresh rate of 120Hz. By default, most computers will have the display settings set to 60Hz for refresh rate, although there are usually more options available; below are my options when connected to my older LCD TV:

The first thing I would check is the display settings on the computer, to see if it was set to a different amount. If so, try setting it back to 60Hz and see if the issue persists:

https://support.microsoft.com/en-us/windows/change-your-display-refresh-rate-in-windows-c8ea729e-0678-015c-c415-f806f04aae5a

Now, why does TeamViewer resolve the issue?

I imagine it is due to the way TeamViewer works - essentially, TeamViewer outputs whatever the video card/display drivers are putting out - this is why TeamViewer sometimes requires a 'Dummy Monitor' in order to work on headless machines, since there is technically no video output when nothing is connected to the device's display driver.

Based on everything above, my guess would be that:

a) The display settings on your device are causing the flickering display due to incompatible refresh rates

and

b) When TeamViewer connects to the computer, it is temporarily setting the refresh rate to a compatible frequency, thereby resolving the issue

It would make sense that the issue begins again after connection in the scenario, as any edits to system settings TeamViewer may make during connections should be reverted at the end of the session.

I hope this helps! Please be sure to report your findings, so we may know more!

Have a great week 🌴