Question First time connecting laptop to TV and I have some massive artefacts

[nbartolo7]

TV is the LG C2, so, there should be no problem handling most recent technologies. I actually got it because it supposedly is the closest thing to a monitor one can have.

Laptop is a chromebook, Acer 516 GE brand-new 2022 model with 120hz panel and very good 12th gen i7 intel processor. So, also should not be a problem to handle the TV.
So I don't know what is happening. Could be the HDMI, but it's also brand-new and 4K/120 and 8K 60FPS support with 48gbps.

Any help troubleshooting the issue would be welcome.

 

[Lutfij]

You're working with Chrome OS or did you install Windows onto it?

 

[nbartolo7]

You're working with Chrome OS or did you install Windows onto it?

I'm working with Chrome OS.

 

[bill001g]

What resolution did you set for the external monitor.

From what I can tell the native resolution of that laptop is 2560 x 1600. This is not a common supported resolution. It is kinda slightly bigger 1440 but many tv also do not support even 1440. If it is trying to run the same resolution as the laptop screen I would not be surprised to see artifacts if the tv does not support that resolution.

I would try to force it to 1080 to start with. Maybe it support 3840x2160 (4k) but I would bet it will only support 60hz.

 

[nbartolo7]

What resolution did you set for the external monitor.

From what I can tell the native resolution of that laptop is 2560 x 1600. This is not a common supported resolution. It is kinda slightly bigger 1440 but many tv also do not support even 1440. If it is trying to run the same resolution as the laptop screen I would not be surprised to see artifacts if the tv does not support that resolution.

I would try to force it to 1080 to start with. Maybe it support 3840x2160 (4k) but I would bet it will only support 60hz.

I think you may be on to something with the idea that the TV is may be trying to run the same (weird and not common) resolution as the laptop.

TV is 4K.

How does one force 1080?

Also, I didn't set any resolution on the TV (external monitor as you say). As soon as I connected the HDMI cable to the laptop and the image appeared on the TV, the artefacts or distortion as some call it, were already there.

 

[bill001g]

I wish I could help with chrome but I have always used windows for GPU stuff. It was either right click the setting and change it or maybe change it in the nvidia settings.

You would think chrome has some method of setting things like that. You should be able to even run it dual monitor with the laptop and tv running at the same time each at its own resolution.

 

[nbartolo7]

You should be able to even run it dual monitor with the laptop and tv running at the same time each at its own resolution.

Yes I do have that option. Should I do that?

 

[bill001g]

I would have assumed you would have already tried it rather than wait for me.

It has to be something strange like that. You should be able to force it to something really common like 1080 that pretty much everything supports. Depends on if your laptop support 4k on the HDMI port....it should. It likely can't play games at 4k because of the GPU but it should be able to display the desktop and likely play pre rendered video.