Problem with my external screen

Robino0o wrote:

Hello,

I use a MacBook Air 2014 and i connected it to an Acer monitor, model RG240Y. Green look oversaturated. FaceTime logo looks fluorescent. I tried to check my monitor's settings and color settings look normal. It was fine just one time, when I updated my Mac but when I rebooted it. That was weird again. My mother has another Acer screen and a MacBook Pro 2015. The problem is the same. I've also tried to change my color profiles, but it doesn't affect anything. If I connect my Nintendo Switch there is no problem and greens are perfect.

Thanks for reading this long text!

Best regards

You do not say how you connect to this monitor...

Sounds like it is not compatible as it stands Acer monitor, model RG240Y.

Get help with video issues on external displays connected to your Mac - Apple Support
 https://support.apple.com/en-us/HT201177

Identify the ports on your Mac - Apple Support
 https://support.apple.com/en-us/HT201736

Using 4K displays, 5K displays, and Ultra HD TVs with your Mac - Apple Support
 https://support.apple.com/en-us/HT206587