M4 mini display issues

[johnrak]

I use a M4 Mac mini with a Xiaomi A27i display. I notice that some dark colors cannot be shown properly. There are squares flashing or dancing. For example this is a picture from the background on the brew webpage.

It seems like there is an imbalance between red and green. If I try to calibrate red and green though the display’s settings this effect is disappearing from that particular color but it appears on another (for example on Finder’s window dark background).

Is this a macOS incompatibility or a display issue? Have you seen these squares again?

I enabled HDR option on the display and turned on “High Dynamic Range” in System Settings. Now it looks fine and I can also adjust the brightness using the keyboard, but the display doesn’t allow me to adjust anything. Also I notice that the default resolution is 800x600 and not 1920x1080. Is this normal?

 

[picpicmac]

I notice that the default resolution is 800x600 and not 1920x1080.

Understand that when MacOS says "resolution" it really means zoom. So 1080/600 = 1.8, or 180% zoom. This is just MacOS's way of picking a size for the display elements on the desktop and in windows, etc. You can sets the zoom ("resolution") to anything in the list (and more if you use BetterDisplay), but the results may not be aesthetically pleasing to you.

However, that MacOS thinks it's a 4:3 display (800x600) sounds to me as if there is compatibility issue.

As for color issues: are you using the HDMI cable, or a USB-C cable (for DP over USB.)

 

[johnrak]

As for color issues: are you using the HDMI cable, or a USB-C cable (for DP over USB.)

I use an HDMI cable. I tried 5 different cables without making any difference. In HDR though mode it's fine.

 

[Fishrrman]

That's a 1080p display with both HDMI and displayport in.

I'd suggest that you try a USBc (Mac end) to Displayport (display end) cable, to see if that makes a difference.

Also, try Better Display if you're not already using it.
It comes in a free version upgradeable to a paid version, but the free version works just fine for me.

Also, I'd suggest trying different refresh rates.
Try 60hz and 75hz and note differences with either one.

You might also try some different color profiles.
Use a desktop pic you like and see which profile is most pleasing.

Can you check the display's on-screen settings page, to see whether you're connected via RGB or YcBcR (I think that's what it's called)? That can make a difference, too.

 

[johnrak]

That's a 1080p display with both HDMI and displayport in.

I'd suggest that you try a USBc (Mac end) to Displayport (display end) cable, to see if that makes a difference.

Also, try Better Display if you're not already using it.
It comes in a free version upgradeable to a paid version, but the free version works just fine for me.

Also, I'd suggest trying different refresh rates.
Try 60hz and 75hz and note differences with either one.

You might also try some different color profiles.
Use a desktop pic you like and see which profile is most pleasing.

Can you check the display's on-screen settings page, to see whether you're connected via RGB or YcBcR (I think that's what it's called)? That can make a difference, too.

I tried changing all settings (including refresh rate) and only enabling HDR was able to eliminate it. I don't have a USB>Display port cable at the moment. I might get one to try that too.