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mozumder

macrumors 65816
Original poster
Mar 9, 2009
1,380
4,644
Anyone have this combination? I just got it.

First problem is that the display doesn't want to sleep with the Mac in sleep mode. It'll go to sleep when it's supposed to but it instantly wakes up. Anyone know what combination of settings gets it to sleep? I've tried HDMI and USB-C inputs as well.

Second is that HDMI output is pretty crappy, especially with HDR turned on. Black and White text in the Terminal app looks like a rainbow with HDR on.

HDR mode also produces crappy sub-pixel anti-aliasing font rendering as well, in both HDMI and USB-C output.

I'm running everything in 1x mode - I like lots of text-editing space. Right now the best results is with USB-C and HDR mode off. And the monitor never sleeps...

Also would love to be able to adjust brightness from a keyboard if there's a way... I have the Logitech MX Keys for Mac.
 
Anyone have this combination? I just got it.

First problem is that the display doesn't want to sleep with the Mac in sleep mode. It'll go to sleep when it's supposed to but it instantly wakes up. Anyone know what combination of settings gets it to sleep? I've tried HDMI and USB-C inputs as well.

Second is that HDMI output is pretty crappy, especially with HDR turned on. Black and White text in the Terminal app looks like a rainbow with HDR on.

HDR mode also produces crappy sub-pixel anti-aliasing font rendering as well, in both HDMI and USB-C output.

I'm running everything in 1x mode - I like lots of text-editing space. Right now the best results is with USB-C and HDR mode off. And the monitor never sleeps...

Also would love to be able to adjust brightness from a keyboard if there's a way... I have the Logitech MX Keys for Mac.

For Color input on the monitor try YPbPr, that is all I can run on using the HDMi cable, RGB looks like you described. I can only run RGB from my eGPU DP connection. Honestly they both look the same and I can't tell the difference.

It is a "No" on adjusting the brightness from any keyboard from the MM to a monitor from my trials. love to hear if someone can. I just have mine set 75% Brightness and Contrast and it really has not bothered me to have to adjust. I do have a quick menu selection on my 38" Ultra Wide 4K monitor where I can switch between 2 modes I have it for Game mode or Standard mode, I can pick the modes and how they look.
 
OP wrote:
"I'm running everything in 1x mode - I like lots of text-editing space. Right now the best results is with USB-C and HDR mode off. And the monitor never sleeps..."

If USBc works and HDMI doesn't... well... use USBc (HDR or no HDR).

I don't think you can control the brightness from the keyboard (as can be done on an iMac or MacBook). I could be wrong.

Having said that...
Have you tried using a screensaver option (in the desktop & screen saver pref pane), instead of "sleep" ??

The 2018/20 Mini doesn't use much more power when "idling", then it does when "sleeping". We're talking about only a couple of watts per hour here. Almost too negligible to be worth bothering with.

So... just put the display "to sleep" (via screensaver).
Another way that's guaranteed to work:
Reach forward and power OFF the display when you're not going to be using it for a while.
It won't wake up on you when you do that...! ;)
 
OP wrote:
"I'm running everything in 1x mode - I like lots of text-editing space. Right now the best results is with USB-C and HDR mode off. And the monitor never sleeps..."

If USBc works and HDMI doesn't... well... use USBc (HDR or no HDR).

I don't think you can control the brightness from the keyboard (as can be done on an iMac or MacBook). I could be wrong.

Having said that...
Have you tried using a screensaver option (in the desktop & screen saver pref pane), instead of "sleep" ??

The 2018/20 Mini doesn't use much more power when "idling", then it does when "sleeping". We're talking about only a couple of watts per hour here. Almost too negligible to be worth bothering with.

So... just put the display "to sleep" (via screensaver).
Another way that's guaranteed to work:
Reach forward and power OFF the display when you're not going to be using it for a while.
It won't wake up on you when you do that...! ;)
Somehow display sleep mode is now working fine (using USB-C). I guess a lot of config changes and reboots did it.

And leaving input USB-C open would allow me to hook up a MacBook or other laptop to it separately, so hoping HDMI works fine with Mac mini.
 
Somehow display sleep mode is now working fine (using USB-C). I guess a lot of config changes and reboots did it.

And leaving input USB-C open would allow me to hook up a MacBook or other laptop to it separately, so hoping HDMI works fine with Mac mini.
HDMI for 4K is limited to 8 bpc. Also, macOS might default to YCbCr 4:2:0 instead of RGB so there may be chroma sub sampling artifacts unless you override the EDID to only use RGB.
 
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